14

Comparing the Colorado curves with those for well-known oils (figs. 4 and 5),
it is observed that most Colorado oils range from paraffinic to intermediate. A
few in the Cretaceous group are very naphthenic, notably those from Abbott field
and the Federal Bureau of Mines coal core hole in Gunnison County (curves 1 and 4,

Cretaceous chart, fig. 4). C. I. curves for the Colorado oils resemble those for
oils from similar formations in Wyoming and other Rocky Mountain areas ,16/

PRACTICAL APPLICATION OF CORRELATION INDEX

Correlation-index curves serve as guides to determine specific products for
which crude oils are best suited. For instance, a peak or hump on the C. I. curve
in the gasoline range indicates a concentration of aromatics and the gasoline might
be a good source of aviation base stock, high-octane blending stock, or aromatic
hydrocarbons, such as benzene and toluene. C. I. values of over 28 on fraction 4
indicate probable sources of aviation base stock, and values of over 30 between 4
and 6, followed by a decline, indicate sources of toluene.17/ Such peaks are ob-
vious among the Tertiary and Cretaceous oils and absent from the older group (figs.
4 and 5). Because of this aromatic tendency, many Tertiary and Cretaceous oils
would be sources of high octane gasoline. Oils that are very paraffinic in the
gasoline range would be chosen as ideal sources of cleaning solvents and naphthas.
Oils from the older formations are more paraffinic in that range.

Paraffinic kerosine and diesel fuels are desirable because of good burning
qualities and high cetane ratings. Dove Creek oil stands out as an excellent source
for these fuels, being very paraffinic in the kerosine and gas-oil ranges (fractions
8 to 12, fig. 5). Most of the Colorado oils are reasonably paraffinic in these
ranges.

Paraffinic crude oils are generally considered to be better than other types
for producing lubricants. Many Colorado oils from nearly every type of formation
should be satisfactory sources of lubricants. Those represented by curves lower on
the C. I. scale in the lubricant range (fractions 13 to 15) should be the most
suitable, Since a large proportion are waxy, considerable processing for wax re-
moval would be anticipated.

APPENDIX - PETROLEUM-ANALYSIS REPORTS

The following analysis reports are arranged alphabetically according to field
names. Some fields have been known by several names. Preference in most instances
has been given to names that have been adopted by the Colorado Oil and Gas Conserva-
tion Commission and the Industrial Nomenclature Committee.

Well locations for Dove Creek, Chromo, and Gramps fields are based on the New
Mexico Principal Meridian. All other locations are based on the 6th Principal
Meridian.

16/ Work cited in footnotes 9 (p. 6) 11, 12, and 13 (p. 11).
17/ Work cited in footnote 10 (p. 11).


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines... Laramt
Sample ....PO-S2=8h.

IDENTIFICATION

Laboratory

“County
“SH i A an. 1
TON, Re 5? W,

GENERAL CHARACTERISTICS

137... A. P. I. gravity .60.5...° Pour point, ° F. ..... below. 5...
Go A “1/2

bala. 0.20
Saybolt Universal viscosity at 100° F,, 93sec. 2 Fy cone
DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillation at atmospheric pressure, .760.. mm. Hg.
First drop, 2h. 15..° F.)

a er =
1 ‘50 12 0.637. 90.6.
2 1% 167 61h. TB .k. :
8 1000 212 111. 6549.. 5500.
4 125 857 13. 58.9. 5302...
5 150 302 160. Sl7.
6 175 847 111. 50.6.
7 200 392 788. 6.1.
8 225 487 TD... h6.7...
2 mo a
ome aT
StAae 2—Distillaton continued at 40-mm, Hg.
nm 0.
raed
Bom wt
Mom oan
18 30 sm
Residuam Ral. 9143. 825... ka

Carton resbe of residuum, 040, perent; carbon exidveoferude, .Ox0. percent.

APPROXIMATE SUMMARY

Percent 0.0 SARL Vicor

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines _ Laramie
Sample .... P65!

Laboratory

IDENTIFICATION
Little Beaver. v= field
Ist.."D* sandstone. a
S,BL.=.55252.£0ek...

GENERAL CHARACTERISTICS

Specific gravity, 0.626... AP. 1. gravity .324..° Pour point, ° F. ..
Sulfur, percent, Ox2l Color,
Saybolt Universal viscosity at 200° F.,..42..see.5at 9 Foy enon 886s

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STacE 1—Distillation at atmospheric pressure, .760_. mm. Hg.
First drop, ° °

a a a 7
1m im
2 6 in
2 10 ae
4s ast
5 iam
6 eo
res
om a
eee

1021558

‘STAGE 2—Distillation continued at 40 mm. Hg.

200 392 pe ied. oy
wp at LO 82 BUG

eh Bee
18 250482 Bol %

1421527 Be
oh.
Residuum . 2... 9642 oe
Carbon residue of vtiem iA5.. percent; eatbon residue of erude,

APPROXIMATE SUMMARY

Light gasoline __

Distillation loss».

otal exon and naphtha
erosine distillate

Gas oll «
Nonviacous lubricating distillate
‘Medium lubricating distillate
‘Viscous lubricating distillate .
Residaum :
Distillation loss .

se


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ..... Laramie. - Laboratory
‘Sample... PO=62=177 :
IDENTIFICATION
As . _Colerada. ree
BS. ‘gndatene, a Weld. “County
Te - 6,728 tect 09M 1A MR -1/4 ne00.125....

Te 6 Me, Re 6l We
GENERAL CHARACTERISTICS

Specie gravity 0.128. A.P.J. gravity 6a§? Pour point °F. Dean. B.
Sulfur, percent, below Qs10_ delow Color, .... BAC...
Saybolt Universal viscosity at 100.° F., ..82.... $60.5 at on? Fey noon 860.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Sram L_Distlatin at atmonphare prewar, TED. meg.
First drop, —. Te F.)

Me et Peet eerie oe on aa bs e

50 122 BB. eB

2548 on
250482
100215 8aT

‘STAGE 2—Distillation continued at 40 mm. Hg.

200392 0
mom aT
1 20 ase
mB aT.
1 00 sie
Residvura Bel. 9804... 833. a8.

Carbon residue of residoum, .Oa0.. percent; carbon residue of erade, a0 percent.

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie
Sample Lik =.

IDENTIFICATION

Laboratory

Gunnison County

Colorado.
County

Gunnison
HEA NM. Ai secs 16,
Te 13 8.5 Re 69 Me

GENERAL CHARACTERISTICS

Specific gravity, 0....922.... A.P. 1. gravity.22.0..° Pour point, °F, .. below 5...
Sulfur, percent, ...1ess..than 0410 Color, bromish-green..
‘Saybolt Universal viscosity at .200° F., .10...see.; at .....° F. see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

StAGE 1Distillation at atmospheric pressure, ..590.. mm. Hg.
First drop, -130.° C. (_.266.° F.)
a a =

Lg 822. 0.9,
369 ..B45. 3600.
B.2 869. Shed.

‘SrAGE 2—Distillation continued at 40 mm. Hg.
11 200 992 369. 3300. 0...892....
Se. ...908..

216!
Carbon residue of residoum, 62. percent; carbon residue of erude, . 2a) peroent.

APPROXIMATE SUMMARY

Perea SoG, TAR Visa Percent Sp.
Light gasoline... se MB Light gasoline... 0...
‘Total gasoline and naphtha Se otal ewoline and naphtha
Kerosine distillate « Kerosine distillate .
Gasol... Gaol. te
Nonviscous lubricating. ‘Nonviscous lubricating distillate... 5
‘Medium lubricating di Medium lubricating distilate © 6...
‘Viscous lubricating distillate ‘Viscous lubricating distillate 19s0-17.5htove 200
Residuum s,s. Residuum . 2... Adal

Distillation lone

Distillation loas .

Te


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .. . Laboratory
‘ample Pesce?
IDENTIFICATION
field Colorado,
Mores

GENERAL CHARACTERISTICS

an Cour
NE I /W sw 7h Pes 23s,
TN, R. 55 W,

Specific gravity, I. gravity le? © Pour pointy °F, er Qo nnn
Sulfur, percent, an Color, green
Saybolt Universal viscosity at 200° F, 36... see 5a soso? Fy one 86,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, ...760.. mm. Hg.

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie.
sample P= 51-286,

IDENTIFICATION

Laboratory

GENERAL CHARACTERISTICS

Specific gravity, 0,832.
Sulfur, pereent, an,
Saybolt Universal viscosity at 200.° F., 42.

A.P.L. gravity .38.8.° Pour point, ° F.
Col

sec.jat 9 Fy $e.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillatign at atmospheric pressure, 180... ram. Hg.

First drop, -h0....° C. (.10h.° F.) First drop, 28...° C. ( °F)

bi ea a a a BF Prygion —_ ot Percent Stay Bs

150 1228. O08... 0. — 1 90

2% 167 346, Kel. 667, 80.6. 566. 2%

3 1000 az 240. 13.1. ms. 66.1. 19. 55.0. 3 100

415 ast 90 RRB Th 58.7 52.0 4 25

5 150 902 Tek 2947767. $3.0. 27. sole 5 150

6 os 347 O43. 3640. 788. BBL. 230... 9.0. 6 17

10092 lhe. 6 “Bok AS. 3200 sto 7 20

aay Ma YS 87. 7. 32 56.5. 8 25

9 260 482 300. 50,0 828... 324). 32. 63.2... 9 250

soos 527 606 5646. 833, 3B. 30. 70,6... 10215
STAGE 2—Distillation continued at 40 mm. Hg. ‘STace 2—Distillation continued at 40 mm. Hg.

1 200 92. 47 0.84. 36.8, 29. 79.2 10. a Bone a 00 892 BAD. TL.

ms at God. Bue 3608. 2B ee coe B bBo. orld. bo. waa BL ae

13 250 sz Oe) 853... Sha... ....26... 90,0... .....§3. 65. 18250 482. O42.

ums sme. 86h 3203. 300 okt ee. “80. ume aT 5.

15 300512. 542. 87h. 30.b. 32. 100.2. 20. 100. 15 800 ore
Residuom el. 921 211 1.0. Rasidvum . . . . 2840... Hee '
Carton residue of residuum, a0 percent; carbon residue of crude, 05. pereent. Carbon reidue of residuum, Mal.. percent; carbon residue of erude, a2. percent

APPROXIMATE SUMMARY APPROXIMATE SUMMARY
Pacent se. sar vile Pact Vier

“Light gasoline : 13.1. 0, Light gasoline
‘otal gasoline and naphtha ST8 “Total gualine and naphtha
Keronine distillate. a Kerosine distillate « G
Gas oil. 837. 37. Gas oil . 360s.
[Nonviscou lubricating dstilate 89-872 35.2-30.8 50-100 876 35.0-30.0 0-100
‘Medium lubricating distillate... B72~2879 30+8—29.5 100-200 0: 100-200
Viera briting tte Above 200 ‘Above 200

24

Residvum
Distillation lose.

21



Table

2, - Summary of data showing sources of samles and some characteristics of Colorado crude oils

arranged according to geological time periods of productive formations,

Properties of crude ofl

Yield, volune-percent.

Fractions

Carbon | Ratio, B12 inc,
Viscosity | Pour Sulfur, | Nitrogen, | residue, |nitrogen | 1-3,inc, (kerdsine 13-15, ine, |
Productive Gravity,| Color| at 100°F.,| point,| weight- | weight- | weight-_ |to carbon| (light |l-7,inc, | and gas | (lubricat-|
Field County Formation 1/ Depth, feet |%,P.I. 2/ | S.v, sec,’ | oF. | percent | percent | percent3/| residue | gasoline) | (naphtha)] ofl) | ing ofl) | Residwum
Tertiary period

Hiawatha Moffat Tasatel ss. | 2,031-2,512 40.6 6 0,12 0.015 0.6 0,025 12.6 29.0 26.4 18.8 13.2
Powder Wash do, do, 5,01b-5,032 | 1.5 60 210 oll 5 22 21.7 21.2 25.6 BT 12.7

Dow do, do, U,138-4,188 | 64.8 <5 <.10 012 al 53.5 26.7 9.0 29
White River Rio Blanco do. 2,38L-2,392 | 39.8 70 <.10 2002 2 563 12,8 4.7 900

Cretaceous period

Abbott Washington a ss, 2 80L=) | 24.0 <5 2105 2.6 20 n.2 26.3 4,1
Adena Morgan do, 5,555=5,570 | 43. 35 9 26 11.6 2h.9 28.6 15.7
Arford Logan do. 5,282-5,288 | 37.8 30 1.5 7.8 26,2 21,1 27.5
Armstrong do. do. 5,408-5,416 | 37.8 35 15 10.4 19.8 22.2 28.0

Do. do, non ss, | 5,609-5,619 | 15.6 to 16.6 2.3 Tl 19.6 51.6
Atwood do. age L,692-L,70b | 0.9 us 13 nb 28.8 23.4 20.7
Badger Creek Adams "pr 5, 336-5, 308 | 39,2 35 1.0 10.5 20.9 2h.0 25.8

Do. do. mn 5,369-5,2h7 | 40.6 50 1,2 12,3 22.6 26,2 21,2
Badger Creek, So, do. "p" 5,396-5,l1h | 3764 50 ug 9.5 18,8 2.3 30.0
Badger Creek, W. do, ag 5, 39-5, h02 59,2 <5 al 43.2 27.1 10.6 8.2
Berthoud Larimer Dakota 88, | 3,793 40.0 Lo 9 1.9 25.1 29.3 16.9 19.9
Big Beaver Washington ng ss. | 1,988-5,022 | 2,3 30 12 13.9 22.0 25.h 15.3 20,1
Bobcat do, "Dp" 88, | 5,150-5,197 | 37.8 5s 1.3 15.1 Lb 22,1 15.6 29.7
Boulder Boulder Hygiene ss, | 1,710 2.6 5 3 nb 26.3 29.6 17.2 15.3
Buckingham Weld "pn ss, | 6,710-6,722 | 38.0 6 190 85 19h 23. 19.0 27.6
Chromo Archuleta Greenhorn ds, | 460-L70 31.5 rr) 2h 20 61 31.5 26.7 3567
cuir Logan age 5,512 39.9 ho 13 9.2 19.2 2.2 15.7 28.9
Clark Lake Larimer Muddy 5,850 38.4 40 1h 10.6 19.4 27.2 17k 22.7
Dune Ridge Logan opr U,L7h-b,u89 | 38,2 55 eee 1.7 ' 98 16.6 26.9 1h. 28.0
Florence - Canon | Fremont Pierre 2,00 31.0 15 026 15 al nwa 29.2 22,1 3762
Ft, Collins Larimer Muddy, Dakota ss, |_,500 35.8 Lo 17 1.9 83 19.4 26,9 18.0 25.7
Gary Morgan npr ss. | 5,100-5,106 | 38,2 50 pee 1.6 9.0 19.3 2L.2 17.0 2762
Goodrich do. ayn ss, | 6,526-6,533 | 3L.8 ho <.10 oo 1.8 10.5 36.7 25.1 25.8
Gramps Archuleta Niobrara ss, | Surface 31,1 SS 222 2ek 3.1 eb 27.0 2h 33-3
Graylin Logan "pr ss, | L,901-L,925 | 0.2 55 <io 12 wz 19.7 21.9 15.5 28.1
Greasewood Weld Mudey ss. | 6,639-6,675 | 37.8 50 <.10 9 2032 4,2 22.9 29.2 17.8 2h?

Dow do. "Dp" ss. | 6,724-6,728 | 63. <5 <.10 20 -_- 48.0 47.3 20 0 3.1
Gunnison Core Hole | Gunnison Mesaverde ss, | LO1-Loh 22.0 <5 <.10 - 1.8 - 20 3.9 2 27.9 27.5
Hartsel Park Apache Creek ss, 9160 3L.2 <5 0,12 - 1.0 - 92 23.4 32.6 16.4 18,3
Keots Weld nye 83. | 7,322-7,365} 38.h <5 <-10 0,073 1.2 0,061 10.4 23.6 25.4, 17.0 22.9
lee Morgan “pn ss, | 5,lh2-5,k55 | 37.2 30 <.10 2067 1.2 2056 6.0 21.3 25.8 17.9 27.0

Do. do, age ss. | 5,lh2-5,455] 60.5 <5 <.10 2905 0 - 4.0 5LS 2.1 0 2.7
Little Beaver Washington "D* ss, | 5,161-5,252| 39.4 40 . 07k Lb 2053 10.6 19.7 22.0 15.8 28,1

Do. do, Muddy: ss, | 5,252-5,258 38,6 <5 <.10 2065 1,2 2054 12,9 20.4 25.5 16,3 2h.7
Little Beaver, E, do. "pr ss. | 5,080-5,088} 37.h 60 17 O91 2.7 203K, 13.9 121.8 20.9 15.5 32.7
Logan ‘Logan age ss. | 5,2h6 39.2 5 <.10 207K 12 2067 16.7 18.0 25.5 15.4 21.3
Taft do. Ast Graneros ss, | L,8bi-b,846] 39.4 50 <.10 2073 12 2061 11.6 20,2 22.9 16.5 26.9
McCallum, N. Jackson Dekota, Lakota ss, 44,700-53050 47.8 <5 <-10 2000 20 - 8.9 45.1 Ws 3.6 .
McCallum, So, do. Frontier 33, _ 27,8 |D.G, 59 <5 232 = 1.8 = 7 20.8 32.5 19.5
McRae Morgan nym ss. a 899-1, 393 9 |Green 36 50 <.10 2021 5 20L2 13.1 27.5 15.1
Merino Logan do, 095-5, 38.8 | B,C, he 20 <.10 +059 1.2 20h9 8.2 inh 25.0
Messer Morgan do, Sr Bea8 eos 38.6 |B.G, ry 20 <.10 02 9 07 5.9 20,0 23.4
Messex do, Dakota as, | 5,072-5, 082 38.0 |B.G. u2 5 <-10 5 1.2 050 5 16.6 2h.9
Middlemist Adams age ss. | 5,516-5,520] 2.1 37 <5 <.10 2052 oo 12.9 23.0 18.7
Minto, Ne. Logan do, is,858-1,876 | 36.2 3 5 i 5083 16 29 3h
Minto, We do, "pe ss. | b,721-h,729} 37.8 43 us 13 209k, 1.6 18.4 29.0
Moffat Moffat Dakota ss. | 3,53b-3,876] 37.8 bo 35 <-10 2023 1.2 24.7 18,
Mt, Hope Logan p* ss. | h,859-h,882 38.8 46 60 <.10 4079 13 19,1 306!

ive formations are designated as follows: Sandstone,

Tasc7 shale, shay

Tmestone, Is.3 dolomite, dol.

cy Types of
Colors of crude olls in thie table are designated as follows: Brovnish-green, B,6,; brownish-black, B.Blk,; greenish-black, G,Blk.s dark green, D.C. NePeAe mumbers,
Carbon residue values were determined by the Conradson method, A,S.T.M, Designation D189-l6,


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Jeremie.
‘Sample PO~4!

Laboratory

IDENTIFICATION

GENERAL CHARACTERISTICS
Specific gravity, 0.818... A. P. I. gravity 4106.
‘Sulfur, percent,

° Pour point, ° F. 60.
9019..
Saybolt Universal viscosity at 100° F.,

Color, -
ST... see.jat °F, see.

"brownish green

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillation at atmospheric pressure, ... 769. mm. Hg.
First drop, —28....°C. (.82....° F.)
ny ata a a a 2
1 ) Bal.
2 1% 2258.
8 100 2147
4 15 2609.
5 150 S301
6 15 59.0.
7 200 4209.
8 25 1... 48.08.
9 250 482 aS. 82a) _
100 275527 fiaS S806.

1 200 892 Bah 620. 0 B45...

5 aT Gab GRAB BAT.

18250482 Ma Ta. 958.

Moe a7 Ba. TBS BBB, 0

15 80012 Ga Bal 887. B49 38.
Residvum M207. 9TAB. AB TB.

Carbon residue of residuum, SaB.. percent; carbon residue of erude, Qe5i. percent.

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines... barant
Sample. Bei9-Zhg

IDENTIFICATION

Laboratory

Powter Yash. field
‘Masateh sandstone.
—— WL 36M} 88. Leet

Te 12 Ney Re 97 We
GENERAL CHARACTERISTICS

Specifie gravity, 0.721... A. P. 1. gravity .6le8__.° Pour point, ° F. ..
Sulfur, percent, .balowad@. below Color,
Saybolt Universal viscosity at L00_° F., ..32..... sec. ; at oF, sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Srace 1—Distilagn at atmosphere pressure, 160 mm. Hg.
2, (08.2 F)

First drop,
1 60 ie MoT
2 1% 167 Blab. 4.6
3 100 22 6r2. 18.
45257 56.1.
5 150 ane 2 26
6 17587 2 28
7 200 502 ape” v2
8 25 487 5.1 2
9250 482 42.8 2
30025 sat 25s NOLO 26
STAGE 2—Distillation continued at 40 mm. Hg.
n1 200 92 28840... i 3ue8 3M
wm aT LRRD. 348° "30
18 250482 W065... os. 3304. 30
mS ser cS rs ae)
1 900 572 LB 9306, 8. 30.0. 33,
Residoom 2. Ba 9605 OMS. det

‘Carbon residue of residuum, 42, pereent; carbon residue of crude, O42 percent.

APPROXIMATE SUMMARY

Pent nr sARL Visi
Light gasoline i Light gasoline wes rr erararer 22. 25305 _v. 667. 80.6.

Total gasoline and naphtha Total gasoline and naphtha - vs 20. 898 Thee

Kerosne ditilate Kerosine diatilate = : 66 ak Wa

aso Garo... 2 “Zul 852. m
Nonviscouslbricatingditilate 399 uti 50-100 Nonviseous lubricating data RT es iit BBalhB6.6 com
Medium lubricating ditilate _ 100-200 Medium lubrleatng distillate mati

Viscous lubricating distillate : : a ‘Above 200 Viscous lubrienting distillate. :

Resduum ss a nit 8 Residuum ven Peet a

Distaton loss Distlation os rn piel



REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ......laremie.__. Laboratory
Sample .....PG-82-76. -
IDENTIFICATION
Gelorade

(3)
APES =AR68 Leek. i WA SHI/A nae oo

TL TN, Re 54 We

GENERAL CHARACTERISTICS
Specific gravity, 0.  A.P.L gravity 41a3_.° Pour point, °F. 2.26 ere
Sulfur, percent, below. 04) Color, ..brownish-green,
Saybolt Universal viscosity at 100° F., 36. see.jat °F, see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1— Distillation a atmospheric pressure, .160 _ mm. Hg.
2. 2° F)

°C.
Percent, a ABE on Sie e
0.849. 86.05.
866. ALA, 5,8.
ME... 6604 Ag. -
143. $8.9. BB.
781. 54.4, 24.
778. 50.4. 25.
798 46,9. 26
806 44,1, 27 -
821. 4049. 29. =
834 38:2 “30.
StAcE 2—Distillation continued at 40 mm. Hg.
1 2000 a92 0.852. S46. 38... T3066. 40.

m5 aT 955, S400 BRO LITO as. 30.

18 250482 888. S165... 38... i a os

uo 87 817, 29,9. 36. 87.0. 70. 15.

1 900 siz 886 2842. _37. 92.8. 120. 90.
Residvum 942. ABT. too. dark

‘Carbon residue of residuum, 427. percent; carbon residue of crude, 2.20. percent.

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ~-Hergnie, Laboratory
Sample... P0=39-59. .
IDENTIFICATION
Pesta, West field oC
"D". sandstone, 7

Logan... County
MW. SW s204 29...

5,126. =.5,132. feet. St
Te 12 N., R. 52 We

GENERAL CHARACTERISTICS

Specific gravity, 0.203... A. P. I. gravity ..69.8..° Pour point, °F.
Sulfur, percent, less.than.0.10 less than Gaon Tighter jan NP.A. 1
Saybolt Universal viscosity at .100° F., ..32.. sec.;at .....° F,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, ..760... mm. Hg.
First drop, -23....°C. (.3...° F.)

Mee Peet Ete abe en We Bs.
1 50 ee. 13.7, 13.7. 0.642... 89.3. .

2% er 293. BLO. Br STB. gt “S60
Bae 22 ee a eg aa gst

4 12% (887 17.6. $2.8. 239. 60.0. 21. Sh.2..

5 0 2 8.0. 89.8 "757 SBab.. ae Sys8

6 175 (MT h.0. 93.48 72h. $1.3. 2B... 55h.
T2000 892 nn DS. 95.3 78h. 19.0. SZab.

8 5am : : =

200 292
2s aT
13250482.
red 7
16300572

Residoum . 6. 97.9. BS

Carbon residue of residuum, O40... perent; carbon residue of erude, OaQ) percent.

APPROXIMATE SUMMARY

Percent sp. SARL Vizaley Percent 9.0. APL Viity
Light _gasoline_. oe oan . M51. Light gasoli : ee 76.6.

Total getoline and naphtha Tee ELAS. ‘Total gasoline and naphtha LI s $9.5,

Kerosine ditillate . : a8. Kerotine distillate tee _ -

Gasol... 36a8. Gasol... _ : ce ce — -

Nonviseous lubricating distillate AGZ-BRS. 3247-2848 50-100 Nonvincous lubricating distillate | | | |). ss coe ee - 50-100
Medium lubricating distillate ‘BQ5-B91. 28-2743 100-200 Medium lubricating distillate . a 100-200
Viscous lubricating distillate - Above 200 Viscous lubricating distillate _ Above 200
Residaum 942. 87. Residoum ss. wha.

Distillation logs...

Distillationlows

a”


REPORT OF CRUDE PETROLEUM ANALYSIS

Laramie
Bureau of Mines . Laboratory
Sample ...... PO=51-308, :
IDENTIFICATION
Springdale field Sehozae .
Dakota "J" sandstone
1,88), = 1,887 fect ee yi We iss: i

R83 W

GENERAL CHARACTERISTICS

Specific gravity, 0....79)...__A.P.I. gravity ..W7ak_° Pour point, ° F. Lom 5. ee
Sulfur, percent, 2em6.than.0.i0° “leas ‘than Color, Brow aicarean
Saybolt Universal viscosity at 100.° F., ..32....see.j at ....° F., w= $C.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Staax 1—Distilatin a atmospheric pressure, 160. mm. Hg.

1 0... 6U9. 86.5.
2 673 78.8.
3 Tb. 6642,
4 743. 58.2.
6 150 302 UD. Sah 762. Sh.2.
6 175 347.1066. 5h.0. 199. 50a.
7 0 992 Boh 6204. 793. 46.9.
8 as 16 6760 «BOB. 43.6.
92808 BAT TOT. B20 4a.
105 sete The «B32. 38.6
Stace 2—Distillation continued at 40 mm. Hg.
20 992.09 508k

0... BI. B66. 32. 7.8. 0...

1 225487 205. Bhe6.. 31. 78.2. 43.
13 2500 482. Zel. 859. 33. Bh... 82.7. $1.
Mo 215 ST. BaP. B74. 30h. 35. 87.6. a7
sm 3. 8k. 2806. 37. M9alz.. ..110.

i. MA. 18a. ‘too. dark

of reiduum, lin]. pereent; carbon residue of erude, OB percent.

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ......... Laramie. w.... Laboratory
Sample PO=52=77. 7
IDENTIFICATION
-gouth. Springdale. field co
y.(7)_"J" sandstone Logan. County
re Hae = ABT fe SW1/4.NE.1/4. no0...28,.

TB N., Re 68 We
GENERAL CHARACTERISTICS

Specific gravity, 0. .825.
‘Sulfur, percent, below. 210
Saybolt Universal viscosity at 100° F.,

A.P.L gravity Ss
Color, ..browniste gaan.

BT. sec.jat ....°

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—Distillation at atmospheric pressure, . .760 mm. Hg.
First drop, 28..° C, (...78..°
veeet BR, SMG a -
3.60.30. 0648 87.6
265 545. 867. A026. Gal. =
5.5. 10.8. m3. 69.08. 18. 63.6.
8.6, AGA 742. H9o2. 23... 60.2.
848. 26.02 782... $4.2. 26. 48.8.
G2. Bhat 778. Bed 26. 50.3.
Bat 3768 79). AT oh. 26. S408.
543. 43.1, 805. 44.3. 26. 60.48.
5.6 48.7 820. 41.1. 28... 66.0.
8.7 55.4 831. BOB. 29. 69.2.
SracgE 2—Distillation continued at 40 mm. Hg.
11 900 392, 202 5746. 0.848. B5ed. 38. 16.9. 40.
12 225 aa7 806 S302. 852. B48. BL. 19.6. 45.
18 250482 5.6. 88.8. Shad. Ba.
14215527. 40. 89.2. 73.
15 900 572, 544 93.2. Alé..
‘Residuum ‘too dark

Carbon residue of residuum, . de

APPROXIMATE SUMMARY

Light gasoline a an Teh. Light gasoline... 1 ss . 10.8. 1504.
“Total gasoline and naphtha ST8. ‘Total gasoline and naphtha 58.2,
Kerosine distillate W206. Kerosine distillate . 42.6
Gasol... 36.6. Gasol... . 36a
Nonviacous lubricating distillate 5 BBal-2849 50-100 Nonviaoous Ibricating distillate | $2.772849 50-100
‘Medium lubricating diatillate 882-4820 2849-2745 100-200 Medium lubricating distillate 882-891, 27.03 100-200
Viscous lubricating distillate... : Above 200 Viscous lubricating distillate . Above 200
Residuum Sh. 1B.2.... Residuum . : CA

Distillation los

Distillation los beeen



REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines _Laremte_ Laboratory

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines _Larenie__.
‘Sample _..PO=k2=25h..
IDENTIFICATION

‘Sample mero
IDENTIFICATION colored:
2.30.24. a

GENERAL CHARACTERISTICS

A.P.L gravity BB.1._° Pour point, °F. 25. _.
Color, ... wrownish-ereen.
3B. see. jat °F, see.

Specific gravity, 0788...
Sulfur, percent,
Saybolt Universal viscosity at 100.° F.,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘StaGE 1—Distillation at atmospheric pressure, . 760. mm. Hg.
First 22 C. (09.2 F.)

‘Wilson Creek field
itone

GENERAL CHARACTERISTICS

A.P.L gravity l7a2_° Pour point, ° F.
Sulfur, percent, Ga
Saybolt Universal viscosity at 100° F., 33. sec.;at ° F,, $e.

Specific gravity, 0.792

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, 760. mm. Hg.
First drop, 22°C. (12°F)

a a i a 7
m1 200392 TUS, O20 1 200 0b
Boas ar eth oN os ar
13-250 482 Stak 35. 99. 18 250 482,
a2 ser. As! Th. 21% Bat
15 300 572 96.6 5... 90 15 800 82,
Residuum . . ‘too dark Residuum .
Cine nsf rsiam Carton tn of eukcom,
APPROXIMATE SUMMARY

roost cht ty owe
Light guiness » 67. 90h
‘Total gasoline and naphtha 0. Ta. RAB
Kerosine distillate... 808, 43.6.
Gas oil see see 838. 37.4
[Nonviseous lubricating distillate we eee 4 852-877 3h.6-29.9 50-100 ‘Nonviscous lubricating distillate 50-100
‘Medium lubricating distillate er ~-B1T=2885 29.9=28.4 100-200 ‘Medium lubricating distillate
occ tbratng State Are 200

ne 5:

as


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ...Laramie,_............ Laboratory
Sample PO=She226
IDENTIFICATION
ast Mountain. View. field olorado.
2nd_"J". sandstone. Adang. ven none, Count
5,521.=.5,5h2. feet. SHTML SE Vb 820.18 coco

T.1S., R57 W,
GENERAL CHARACTERISTICS

Pour point, °F. MS

Specific gravity, 0.809... A. P. I. gravity ..W3._°
10 Color,
$0,

Sulfur, percent, esa. than.0..
Saybolt Universal viscosity at 100 F., 26... see.jat ...° Fy

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillation at atmospheric pressure, ..760.. mm. Hg.
First drop, 2b... (..05...° F.)

rows o S &
1 60 ee Ba.

2% eT... BaP.

3 100 22... Bab

4 195 57 Ta.

otto bon

6 175 aT S49.

7 200 392 .....Bad.,

8 225 437 Led. -

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .....Larami. Laboratory
Sample P0-82-79.
IDENTIFICATION
Colorade _
“Adame County
ane we A. Ya ie Phe...
35.) Re

GENERAL CHARACTERISTICS

Specific gravity, 0... 818.

A.P.L gravity .41ef

.° Pour point, ° F,

Sulfur, percent, balow.0u10. Color, brownish green.
Saybolt Universal viscosity at 100.° F., ...58... sec. OB cnn 80s
DISTILLATION, BUREAU OF MINES ROUTINE METHOD
Stace 1— Distillation at atmospheric pressure, 760. mm. Hg.
First drop, ..28...°C. (..79..° F.)
Prggion outa on. Bist ble 1 a. 7
ae eens eC e oh.

41.8
47.0
53.2

nee D879. 0 BS. 38.0... 22 BO.2.. 39
225 as 56 685 BD. 36.8... ..26. --B542... dus.
ye 250 sz 2 6BL7 BSS. BIO. 29000 90.0. $3...
a ee eS SS 32.5... 30. 3. 10.....
15 90072 Sak. 78,3 87h. 30k. 32... 99.2. 105. S. 78,
Residvum . 325 97.8. (929. 20.8. ~109.0... 9k 982
Carbon residue of residuum, liad percent; carbon residue of erode, «9. percent 5 percent; carbon residue of erude, 0.9. percent.
APPROXIMATE SUMMARY APPROXIMATE SUMMARY
SA Visor Tam Vim
Light gasoline. . a 68. Light gasoline ss . 0.
‘Total gasoline and Raph od. "Total gasoline and naphtha 0.
Kerosine distilate . bs3. Kerosine distillate .f
Gas ol 80 37.0. Gas oil « B39 BTR.
‘Nonviecou Tubrenting datiite 850-.873 38.0-30.6 50-100 Nenviacou lubricating distillate. pills 855-876. $4,0-80,0 50-100
Medium lubricating distillate 873-4880 30.6-29.3 100-200 Mediumlubricating distillate... : 878-882 30,0-2859 100-200
Visoous lubricating distillate « _ Above 200 Viscous Tubricating di : . Above 200
229. Residuum :

fiiii ill. Saas

DistMltionlows


REPORT OF CRUDE PETROLEUM ANALYSIS

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ......laramie. Laboratory Bureau of Mines ..._.Laranie. Laboratory
Sample... Po=Slie222, . Sample. P= Sle 37
IDENTIFICATION IDENTIFICATION
er Creek... field Splerade _ Badger Creek feld
+. D_sandsto dan: County "Dakota," sandstone.
Si236-5 38 feet * MSE Wk sec, 225 353692542h7. feet.
GENERAL CHARACTERISTICS GENERAL CHARACTERISTICS
Specific gravity, 0.829........ A.P.1.gravity..3%42..° Pour point, ° F. 38. — Specific gravity, 0.822... A.P.I. gravity .is6._.° Pour point, ° F.
Sulfur, percent, Oa Color, ..reen Sulfur, percent, O12. Color,
Saybolt Universal viscosity at 100° F., Wh... sec.jat .....° Fy see, ‘Saybolt Universal viscosity at 100° F., 38... sec.;at .....° F., . $ee.
DISTILLATION, BUREAU OF MINES ROUTINE METHOD DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillation at atmospheric Pressure, 160. mm. Hg. S7A08 1—Distillation at atmospheric pressure, ..760.. mm. Hg.

First drop, 2h...°C. (...75.° F.) First drop, 27..°C. (.....8h°
Pepin Otte pee Sa rs re ur a ont Preion Catt acne Cn
5 al es a et Ey. : Mee age Fee ee Ee, ie

1 90 22,8 28. 0.652. 85.5, 1 60

2% ie 2h S662. 82.2. 347 8348 2%

8 1000 2. SoZ... 105. 708. 5 46. Shad. 8 100

4s on 67 a2 39 60.0. 2h 52.0 4 1%

5 0 9 SS BTR. 55.2. 23. 51.8 5 150

6 mss WT. 2h 778 Sua. “2k. 53.2 6 15

7 200 302 Blk 788. Ags.” 2k. 52.9 1 200

8 ms aT 6. 36.0 BOL M52. 2s x 8 205

9 m0 asd. long 815. Ms. 26. 66,8. 9 250

oats ser SLT. 66 827 39.6 27 7.0. 10215
‘StAGE 2—Distillation continued at 40 mm, Hg. Stage 2—Distillat

200 82.345... 50.1. 0 BLS. 36.0. 31. Tel ho. 20... un 200 WO _
5 4aT 53. SB eb. BLO. 3542... ..29. 81.9. 4s. ig 12 235

18 280482 AD... 6043. 862. 32.7... ..32.. 8642. 38. 13250

Mom ser Sud. 65h 872 30.8. 3h. 9049 B 80 M25

re es ee 28.9. 36 9566". 15 98. 15 200
Resldvum 25.6... 97.3... 93K 20.0 105.8 Residwom .
Carbon residue of residuum, 348. percent; carbon residue of erude, -haO. percent. Carbon residue of residuum,

APPROXIMATE SUMMARY
Pest a sat Yasir sap Vico

Light gasoline J... wees 2205. 0683... 7507 Light gasoline. . _ TS elt
Total gasoline and raphtin So a 5S TF ‘otal gasoline and naphtha ~BLAB.
Kerosine distillate . . . 2908. 808 13.6 Kerosine distillate . ~lg.0
Gasol... : . 2 Ua Bho 3730. Gas ol «
Nonviseous lubricating dietilate TA? 855-.878 3h.0-29.7 50-100 Nonviacous lubricating distillate | |. || S5le.is Fee 1230.2 50-100
Medium lubricating distillate cuSak.. 87824887 2947-2840 100-200 Medium ubricating distillate . 100-200,
Viscous lubricating distillate i” veo ‘Above 200 Viscous lubricating distillate vow Above 200
Residuam Rb SAL 2040. Residuam . Doe 9.8.
Distillation loss aT. Distillation oes Lak.

at


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie. Laboratory
Sample. ...P¢-62=174...
IDENTIFICATION
Little Bearer Greek. feld Color
AggqndBenoh. of Mldysandatone ‘ashington
BPS2.=. 8758. foot. RAEY eon

ao Tae, Be bem
GENERAL CHARACTERISTICS

pels

Specific gravity, 0.88%... A. P. I. gravity .8848.° Pour point, ° F. 5...
., bromish-gresn,

Sulfur, percent, below Qa10 Col
Saybolt Universal viscosity at 100° F.,...42... sec.;at .....° Fy sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, .780.. mm, Hg.
First drop, —26..°C. (...77..° F)

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ..... Laramie
Sample... PGn$5n298...

Laboratory

IDENTIFICATION

‘East field

GENERAL CHARACTERISTICS

Specific gravity,
Sulfur, percent,
‘Saybolt Universal

Color, ..ereentsh-bleck
sity at 100.° F., U9... see. zat... Fy sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillat at atmospheric pressure, 760. mm. Hg.
First drop, ..22...° C. (20... FB.)

ie ee nd ee es a
180 tae Ae. Ae. 0.848... 86.9. 1 01 Bad 33 0.643 88.6,

2% 17. BoB. 49867. 80.8 642 - 2 os ier M9 BR 7680. 78.6.. -38 51.2

8 100 a Toh. ARQ TA. 18867.. 38 Sir 3 100 me Saf. UR. “729 626. |. 26 1

415 ast Te 1990 TAL 5995. 22 51.9. 4s ot 8 IT. Be 2h, can

5 150 902 e., 2809 761 Shed 24 BOs? 5 10 me 36693758 55.2.) 23 5.42.

6 15 er oh. 2868778 "8004. 226. 5204. cr Cy ne ne 52.0 "28 56.9

7 20 92. oh. S204 790, A626.) 8700. 1 20 a2 1 Bek 257785 8.8. 23 59,8.

8 25 ar eS 18667808 Met 28 82,8. 8 ms ar Sok BP 799 W562 Wf

9 290 42 Ho 4108 818 Aloo 26 8162 9 50 ae 85 926 BO 1362.23 03

10s oar. 08. 44D 828. 3804 27 Ted. 10 ams ser BAO, 376.823 hoek 28. 1258
‘Stace 2~Distillation continued at 40 mm. Hg. ‘STAGE 2—Distillation continued at 40 mm. He.

1 200902. BaD. 8008... 0 B42 3808... 30 a, a 20 a2 308 TR. BB. 20.
om at Toh 8709 84889 29 8565. 48 40 oat Balk 823. 18 to
13 250 a2 Bak 8a 884 a a nf 13 20482 840. 86,8. 51 9.
14 275 27 ek. 8TH 874 nn ec 80 80. ome ser 8 91,6. 6 "80.
xe 80 fa. Tak aa 26.2. 87, 968. 140. 90 15 00 52 Sal 26,6. 130, 8.
Residuum . . . . .24aT 9809. too. dark Residuum . . 32.7 too. dark
ns aac of cue AaB frst en ere LOR. rent Carton residue of residuum,
APPROXIMATE SUMMARY
Peet tee tak viwaty snr. sar Viele

Light gasoline = 1340. Light gasoline. ° 21303,
Total gasoline nd naphtha Web “otal guecline and naphtha . 0.726. “BL
Kerosine distillate 81 Bab Kerosine distillate : . cig a2. 2.8.
Gasol... . . 838. BT a4. Gas ofl nae coe 10.9. Bh2. 36.6.
Nonvisous lubricating BBB=a878 $4a4-2907 50-100 Nonviacous lubricating ditlate B.3.. -85liee870 3h,2-31,1 50-100

878-2893 _2PaT=2700 100-200
‘Above 200

Medium lubricating distillate...
Viscous lubricating distillate .
Residvam .

‘Distillation loss

2040.

53. 870.880 31,1=29,3 100-200
Above 200

Medium lubricating.
Viscous Iubricat :
Residvom Fe : B27 Bn 2B ,2.
Distillation loss sae 5.2.

0.838... A.P.I.gravity.37-4.° Pour point, ° F. cg —

oe


CHARACTERISTICS AND ANALYSES OF NINETY-TWO
COLORADO CRUDE OILS

by

W. Je Wenger,2/ M. Ls Whisman,2/ W. J. Lonum,_/
and J. S, Ball2/

CONTENTS

Page
Introduction and summary ...000 1
Acknowledgments scecsceccscecccce 2
Location of oil- and gas-producing areas of Colorado . 2
History of oil and gas discoveries in Colorado .... 2
Geological data .cceccccccvcvceseececes 6
General characteristics of crude oils 7
Correlation-index classification ... 1
Practical application of correlation index . 14
Appendix - Petroleum-analysis reports .ecooe 14

ILLUSTRATIONS

Fig.
1. O41 and gas fields of Colorado .ccsscoee eeceoe 3
2. Oil and gas fields of northeastern Colorado . ° 4
3. Oil and gas fields of Logan County, Colo. coveoe 5

4. Correlation-index curves of Colorado oils (Tertiary, Creta-
ceous, and Jurassic formations) compared with reference
CUIVES socsccccecscescvcsccccceccscvcsscceccccscessesevos 12
5. Correlation-index curves of Colorado oils (Triassic,
Permian, and Pennsylvanian formations) compared with
reference CUTVES soseseccrcccesccescecccececses covssece 13

TABLES

1. Colorado's 10 largest producing oil fields in October 1955. 7

2. Summary of data, showing sources of samples and some char-
acteristics of Colorado crude oils arranged according to
geological time periods of productive formations ....c.eo 8

1/ Petroleum chemist, Bureau of Mines, Region III, Laramie, Wyo.
/ Analytical chemist, Bureau of Mines, Region IV, Bartlesville, Okla.
/ Chemical engineer, Bureau of Mines, Region III, Laramie, Wyo.

Report of Investigations 5309


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Iaxamie_________
Sample .....P=5U=79...

IDENTIFICATION

Laboratory

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines —-
Sample —P pois

IDENTIFICATION

—Crampe. — field

-SH1AL_se.
Te 33 Ney Re 2 Be

GENERAL CHARACTERISTICS

Specific gravity, 0.870.
Sulfur, percent, 0.22
‘Saybolt Universal viscosity at 200° F., 6... sec.;

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘StaGE 1—Distillation at atmospheric pressure, .760.. mm, Hg.
First drop, 54° C. (127° F.)

7

pereent; carbon residue of erude,.2all.pereant

APPROXIMATE SUMMARY

TMorriaon_amndatone.~
* ~ “O33 Mey Be 2 Ee

GENERAL CHARACTERISTICS

© Pour point, °F...
Color
°F, 290. sec.

Specific gravity, 0. STL AP. 1. gravity 3h20
Sulfur, percent, 9:
‘Saybolt Universal viscosity at 200 F., _69.sec.;a

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

STAGE 1—Distillation at atmos
First.

pressure, ..760. mm. Hg.
PC (on F)

ie, BE

Tha.
163.
786.
798.
$22.
826.

‘Carbon residue of residuum, 123. percent; earbon residue of erude, 246,_ pereent.

APPROXIMATE SUMMARY

Light gasoline... Light gasoline
‘eat ane ord con] ‘otal gasoline and naphtha a
Kerosine distillate. . .

Guol.....

[Nonvacous lubricating ditlate
‘Medium lubricating distillate
‘Viscous lubricating distilate
Residvum .

Distilation ous...

Bee 100-200
‘Above 200

~~ 36.8.

3B.0-28.4 50-100
2B2=26.6 100-200
Above 200

6z


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines

we Laboratory
Sample -_

IDENTIFICATION
Abbott son field
2nd nae "

Ls80l. =.

GENERAL CHARACTERISTICS
Specific gravity, 0.220... A. P.I. gravity 2.0..° Pour point, ° F.
‘Sulfur, percent, 0.2.
Saybolt Universal viscosity at .100° F., 130... sec.; at 130.° F., ..28..... see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stage 1—Distillation at atmospheric pressure, .. 760.. mm, Hg.
First drop, 208 °C, (..2bh..° F.)

ote sen, 2.0% AR ay.
ee ee ate. ae en ae, -
1 5 ae o..
2% it
3 10 ae ~
Pe ee a
5 150 302... Jal me 186. sh
6 1 ut 368 19 197. 6.0. 3h. Shu6.
7900 992 BB 98 Sha6..
B48 alle. ob 8. 3608 NBs BaD.
9 250 482 Me. 2040 860. 3340. 2. 53a.
Pe eS ee, 52.
‘STAGE 2—Distillation continued at 40 mm. Hg.
ee ee eo US... belomS.
ms ast G5 3S 907 ahs 57. "56... below. 5.
ws 250 a2 Gad. 136. eo) 5B... 83. below..5.
Mam 527 508 WDAZ. .925. 21.8... 59. 1S... below..5.
1 0 st BO 57.2. 9a 20.5. 59 350... helow.5,
Redon... WL. 98.3... 956 x
Carbon residue of residuum, Sa. percent; carbon residue of crude, .240. pereent.
APPROXIMATE SUMMARY
Pevent 50.68 SAP Views

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ....laranie....
Sample ....PG=She219._

IDENTIFICATION

Laboratory

field

=. ~ Bre tes feet (2 wells)
an 75,626 feet ‘

GENERAL CHARACTERISTICS

Specific gravity, 0.809. A.P. 1. gravity U3ah° Pour point, °F, 35. a
Sulfur, percent, .less..than..0.10 Color, ...graen.
Saybolt Universal viscosity at 200° F., .35..... sec. 5 at 09 Pay conn 80s

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1 Distillation at atmos erie pressure, . 760 .. mm. Hg.
Ct 5

First drop,
‘Fraction __Cut at Sum. (ap. Gr, TA Pk iad az. 2
Mam agape Percent ren tate. ame on ‘piet” wit te
Pr ee eee ee 82.6
2% wt 33 661. 82.6
8 100 22 af 712. $242.
4 125 287 Ted. Th. 59.45.
5 150 302. Ge. 760. ShaT.
6 6 st. B48 15. Shak
7 200 392 02. 786. B.5.
8 m5 ast B08... 397... 46,0.
9 250 482 O03 810. 13,
10 me war Td B20 aL.
‘STAGE 2—Distillation continued at 40 mm. Hg.
1 200 g02 Ja. $22. 0836. 31.8...
waar 600 65d 39 aT.
13250 ane 508 TORT BUBBA
ae sat bed 1802 861. 32,
15 300 572 640. 81,2 872. 30,8...
Residuom 2. ASAT 9609. 92500 2M

‘Carbon residue of residuum, ..343 percent; carbon residue of crude, .

APPROXIMATE SUMMARY

$032.89 28.2222.5 50-100
Mediam lubricating distillate . 92] 225-211 100-200
‘Viscous lubricating diatilate
Reaidvum
Distillation lone.

Light gasoline 2. 2
‘Total gasoline and naphtha. :
Kerosine distillate .

Gasol. ss

Nonviscous lubricating distillate
Mediom lubricating distillate .
Viscous Tubrieating dit

Residuum 2.
Distillation lone

st


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines_laramie
Sample  PC=Sin35__

IDENTIFICATION

‘Laboratory

GENERAL CHARACTERISTICS

Specific gravity, 0..8b6 A. P.I. gravity 35.8 _° Pour point, ° F. _below §__.
Sulfur, Color, brownish ree:

percent,
Saybolt Universal viscosity at 200° F.,.h2__ sec.; at ..° F., See.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1 Distillation at tmognher pressure, ..760.. mm. Hg.
‘First drop, CUR)

min eo fe cB ne ae
en

BE) EERREEEEE
ef
;

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie.
‘Sample ..... RGrabin2:

IDENTIFICATION

i. UV asc,
Rs, RM,

GENERAL CHARACTERISTICS
Specific gravity, 0.836. A. P. I. gravity .3748._.° Pour point, ° F. 55.
Sulfur, percent, eas. than.0.10 Color,
Saybolt Universal viscosity at 100° F., U7... $60.5 8 nn? Fay cern 800s

DISTILLATION, BUREAU OF MINES ROUTINE METHOD.

‘STAGE 1—Distillation at atmospheric pressure, ..760.. mm. Hg.
Firs °C.

(82°F)
en a a ee:

Beasansewn

22.4: 93h.
Carbon residue of residuum, -.3.8 percent; carbon residue of crude, ..L63. percent.

APPROXIMATE SUMMARY

Vint

50-100
23190288 sc0-a00
mone Abowe 200

at


REPORT OF CRUDE PETROLEUM ANALYSIS REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie. - Laboratory Bureau of Mines ...

Sample .......PC=5.Qn27h. a Sample
IDENTIFICATION IDENTIFICATION

Armstrong... field
‘Lakota ("0") sandatone...._.

~SGO8SG19 feat.

GENERAL CHARACTERISTICS GENERAL CHARACTERISTICS

Specific gravity, 0...962..._ A. P. I. gravity ...1546.° Pour point, ° F. Specific gravity, 0.821. A.P-I. gravity .W0s9..° Pour point, ° F. us. — —

Sulfur, percent, 3,19. above lor, a Sulfur, pereent Color, Bromdeh=green.

Saybolt Universal viscosity at 100° F., 6908... sec.; at 130° F., 2200. sec. Saybolt Universal viscosity at 100», Bae 8005 ME a? Pry nnn $00.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—Distillation at atmospheric pressure, .760... mm. Hg. Stace 1— Distillation at atmosphere pressure, 160... mm. Hg.

First drop, 58_.°C. (136° F.) First drop, 26. (12.2 F)

Pragion _ Cat et son, ron ‘tee gy. ont
i as a oe haa ee 108, MS wh. e
1 ie °. —

2% wt 0.7 067.) 52.6.
8 10 82 1,6... 2,3). — S542.
41 BHT 1D BB 2h... on Bad,
5 0 me 2 dy, 23. 5206.
6 1% MT 2... Ie 88... 52h
7 200 92.243. Pals 28... Shel.
8 25487 2h. TB. i... 5943.
9 250 482 3,1. Wed BB, SheeT.
1026 om eg Agel 32. "10,2.

aa


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie... Laboratory
‘Sample ....... PC-51-281.
IDENTIFICATION:
_Qraglin. field Gelerade —
Dakota (*D") sandstone.
gon. = 4728. feet... “Seiwa sacs

TOW, R53 M.
GENERAL CHARACTERISTICS

Specific gravity, 0..82h_ A.P. L gravity .i0.2_° Pour point, °F...
‘Sulfur, percent, lesa. than_0.10 Color, .
Saybolt Universal viscosity at 100 F., 8... see.;at .....° F., sec.

58...
ova sh=greei”

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .......arante. Laboratory
Sample PC-50=267.. 7
IDENTIFICATION
_--Oreasencod..... field
Muddy, gandatone, a
39-6615 Lent.

GENERAL CHARACTERISTICS

Specific gravity, 0. 836. A.P.I. gravity 378° Pour point, °F. 5
Sulfur, pereent,..282% 0.10 Color, ... SReendah=bremn..
Saybolt Universal ‘Noon at 1002 FUR... $e0.5 at nn? Fey see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—Distillation at atmospheric pressure, ..760. mm. Hg. ‘STAGE 1—Distillation at. Shrgpheri pressure, 760. mm. Hg.
First drop, ..26 °C. (..729...° F.) First drop, 29...° C, (8! °F)
a a a cd
1 so e247. 3.7 0 4. 87.2. se nse 1 50 ig2 O47. 947.). 0.
2 1% 167. Bal. Tah... 815... TB.1. 9.48. 55.0. 2 % 167 . La? Zab.) 670. 19.7. 56.8.
8 1000 m2... 3.8. 11.2. TB... 65.6. 20. 5342. 8 10 22. 18 hk. 3... 61.0. 18. 5241.
4 1% 257 645. 17.7 739. 60.0... 21... 523... 4125 257 | bab. 8.6. Th. a! 22. 49.0.
5 150 302 _.L.5. 22.2 756. 55.2 BSR 5 160 902.648. 15.2 762. Shad, 25. Bal.
6 1 47D ROD. 713. 51.6 23. 53.3, 6 1% sat OG. 21.8 211. 50.6 25. 50.3.
7 200 992 ha. 0.9. 788. AB.L.. 2h. 5549... 1 200 992 Sad, 27.1. 788. 48.1. 2h. ShaB.
8 25 aT HAO Bho 801. L542. 2h. 61.0. 8 26497. WaT 31.8 199. hS48. 2h. 60.2,
9 20 a2 3947. 825..... W221. 26 6549. 9 250 482. Sad 32.1 81... 43.0. 2s. 65.0.
10 215 gaT Se. AS. 827. 39.6. a1 10.8. 100215527... 662. 13.3 82h. hO.2.. 25. 69.4.0...
‘STAGE 2—Distillation continued at 40 mm. Hg. ‘STAGE 2—Distillation continued at 40 mm. Hg.
1 200 a2 18 42.0. 0 Bh. 36.8. 2g. 75.8... 39... 30. 1 200 392 ....640. N93... 0.80... 36.9. 29. 76.2. 38...
12 225 487 548. 52.8. Bl. 36.2 aD Bab. 2. 50... 12 225487 -..740. 56.3. BL? 35.6. 28 BL. 43.
18 250 482... Sal. SLA. 857. 326.0 0. 85.8. BQ Bonn 13 250482 S47 62.0. 860. 33.0. 31. 87.3. -52....
rr a ee Oe oe 203 865. 321. 3. 90.6. os. 85. 4 25 ser Sal 67.1. B69... BAB... 32... 91.5. 68.
18 8000 572. Sa 68.3. 873, 30.6. A. 98.6. oh. 95. 15 300572. -740. Ted 878. 2907. 3h. 9742. 108......
Residuum . 28.1... ols. 93h, 20.9. ‘Too dark Residuum . . . . She 98.8. 925. 21.5. 115.0.
Carbon residue of residuum, ..348. percent; carbon residue of crude, Le. percent. Carbon residue of residuum, 322. percent; carbon residue of crude, 042. percent.
APPROXIMATE SUMMARY APPROXIMATE SUMMARY
Seon tA Vy rr ee
Light gasoline... a 0.680. 168. Light gasoline... reece areas at soglte2..
Total gasoline and aphihe 0.732... 61.5. ‘Total gasoline and naphtha 7 Se el 7
Kerosine distill 809. Kerosine distillate . . -
Gas oil . Bb... 36.8. Gas oll. . we wee
‘Nonviscous lubricating distillate "857-.875 _33.6-30.2 50-100 Nonviscous Tubricating. dame | a 12.0.
Medium lubricating distillate . AS=.B78 -30.2=29.7 100-200 ‘Medium lubricating dis h.3.
Visco Iubrientng dita Sense Above 200 Vico lubricating
Residuum 93s. 20.0. ‘Residuum . . .

Distillation loss -

Distillation lose


12

10
Sooo, nex
mee _
Ba
8 = aT ‘remuebare ou
fa
a a
a
a ‘BRADFORD, PA.
AMA OL
/ 1 HIAWATHA
‘ 2 Powen msi
7 3 POWDER WASH |
y 4 wre nven
/
% 4 8 0 @ 4 2 4 8 10 2 4
AvaLy8is FRACTION NUMBER ANALYSIS FRACTION NUMBER
COMPARISON C.1. CURVES: COLORADO TERTIARY (WASATCH SANDSTONE)
8

All 1 ABBOTT “y 8 TOW GREEK MANCOS SH. REPRESENT
Va 2. ARMSTRONG "0" ss. 9 WELLINGTON MUDOY ss. oR ee eS)
" 2 cnc me SEMIS on ea unser tues ons) one cece HH
5 TSEL APACHE CR. SS. RESENTING 51 OILS. MAUDLIN GULGH(M)(S) WILSON GREEK(M)(S)
6 MECALLUM, SO. FRONTIER 8. on gaeeereeeo
7 WERE 3" $8.
al T T T T I
2 4 G 3 io «2 + 3 10 D7 ro
ANALYSIS FRACTION NUMBER ANALYSIS FRAGTION NUMBER
COLORADO CRETACEOUS (MESAVERDE HYGIENE, APACHE CREEK, NIOBRARA, COLORADO JURASSIC (MORRISON AND SUNDANCE
FRONTIER, MUDDY, DAKOTA, LAKOTA, “D", “J","0" SANDSTONES, SANDSTONES)

PIERRE, MANCOS SHALES, AND GREENHORN LIMESTONE

Figure 4. - Correlation-index curves of Colorado oils (Tertiary, Cretaceous, and Jurassic
formations) compared with reference curves.


REPORT OF CRUDE PETROLEUM ANALYSIS
Bureau of Mines
“sample FO=K

IDENTIFICATION
field we Golovade.

. Laboratory

Lariner. ‘County
Te-9and.10.Me, By 68 Ry

GENERAL CHARACTERISTICS

Specific gravity, of A.P.L gravity 3342_.° Pour point, °F. -DELOW. Sco
Sulfur, pereent, .Oa Color, brownish-green.
‘Saybolt Universal vis MWB seejat °F, ‘see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—Distillation at atmospheric pressure, . 760. mm. Hg.
First drop, ..48..°C. (.118..° F,)

Pye Ot reeatBaR BE a
19 ae Onn
2 ie db ll OE Bel. 908
Pn eee ee 3 one OBO BL
4567 bah. : tik S807. 2h
5150 902 eB. 703. S3a2.. 26.
6 1s set Sak. 2205. is Ug.s.. 29
1 m0 392 ed 2606. cn ig 32
8 225 487.309. 30,5. a 40.8. 3h.
9 50 ase ale 39 BBL, 38.2. 35.
wom 58 MOB BUR. 386 36.
Stace 2—Distillation continued at 40 mm. Hg.
1 200 a2 6.6... 086 3 4 Bf
ws 487 5248... B72. 306! 40, Wee 4a.
1B 280482 STah. 885, 86h. U3 1340. $1
2m 527 Sak 903. 25020 he “bat 93
15900572 a 23 2305 80. 8042 180.
Resduam 2. aT 958. 1642 too. dark

‘Carbon residue of residuum, ‘percent; carbon residue of crude, 2eL percent,

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
Sample.

GENERAL CHARACTERISTICS

Specific gravity, 0. 826. A.P.1. gravity 3248. Pour point, ° F.
Sulfur, pereent, 128. than 0.10 Color,
Saybolt Universal viscosity at 100° F., 38. see. at on? Fey onconne 806.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at at atmosphere pressure, ...760. mm. Hg.
60. °F)

a a 2

BERGE PRORBEbIS

Light gasoline 7 Light gasoline...
"Total gasoline and naphtha "Total gasoline and naphtha
Kerosine distillate - Kerosine distillate... 2 ss

Gas oil
Nonviscous lubricating distillate
Medium lubricating distillate
Viscous lubricating distillate
Residuam .
Distillation loos

Gas oil «
Nonviseous lubricating datilate |
Medium lubricating diatillate
Viscous lubricating distillate...
Residvum tee
Distillation

9s


rT wey ~ ~ | oom
\ j ge gh FOR A DETAIL OF THIS | JULESBURG)
\ | 9 AREA, SEE FIGURE 3 SEDGWICK :
1? 96 LOGAN | ug
eo sei bao?
LARIMER 6 182 f
Fort couunster | | 0% WELD an ib STERLING | PHILLIPS / i
t — HOLYOKE 1
/ | i690 l
113 @GREELEY ah .
/ | 165
ea
f=
/ | 186
pouty 167
of } Syray
- Ken BRIGHTON
orgy | i ADAMS "0
~. Vo DENVER
j  \GoLoen : -
| \ one! ARAPAHOE
: \ ®
VEFFERSON | LTTLETON ¢ am
y / 7
| i \ | S i
\ caste | ©kiowa ® 7 °
| 7 poudLas ELBERT I * 7 j KIT GARSON BURLINGTON
LZ \ i ew 7
. . x . ws 7 6 |
| \ “| we Wa HUGO
j | \ A 74 LEGEND
| , a j © onriero
EL PASO i j GAS FIELD
Sse |B OIL ANO Gas FieLD
| ORNS _ - LINGOLN | % _NINPORTANT OR ABANDONED FIELD

Figure 2. - Oil and gas fields of northeastern Colorado.


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .... laramis
‘Sample ... P0=80=%

IDENTIFICATION
Blorenge Canon... field a
Plerre.shale.. ~ County
“Approximately. 2400 feet SEY wate 2.5
Te 19 Sey Re 70 Wo

GENERAL CHARACTERISTICS

Specific gravity, 0.871... A.P.I. gravity .8120_° Pour point, ° F. .
Sulfur, percent, 0426 Color,
Saybolt Universal viscosity at 100.° F., 17 sec.;at .27..° F., 220. sec.

aaaahcaeaa

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—] illation at atmospheric pressure, 760... mm. Hg.
First drop, _87...° C. (..189.° F.)
a ad
ee ae
2% tt :
8 100 212 Ooh. Onde
4 15 27 LB 202.
5 to om 208. 8.0
6 17% «347 Bel. Bol
7 200 992 Bed. 116.
8 25 497 Hoh 1506.
9 260 482... 595. 21,1
10275) S27 696. 2767.

‘Stace 2—Distillation continued at 40 mm. Hg.
200 2eh. S002 0 854.

12 25 1006.

13 260 199

rae Bet

15 300 8y4.
Reidaum . 5762.

Carbon residue of residuum, 598. percent; carbon raidae of erude, percent.

APPROXIMATE SUMMARY

Visa

Light gasoline. ws

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ...Laramd
Sample

Laboratory

IDENTIFICATION
Fort Collins... field
Muddy. = Dakota. sandstone...
1500 feet

GENERAL CHARACTERISTICS

Specific gravity, 0. Bl ALP. I gravity 354!
Sulfur, percent,

-° Pour point, ° F.
Cal
Ser cal acai a 200° F, MB 800.5 at on? Bey anne 800s

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—Distillation at atmogpheric pe pressure, ...760. mm. Hg.
First drop, —30...° C.

' sum, Sekt ok ype gu ee
se ce ee

$51.
0-65

“Total gusoline and naphtha
Kervsine dilate...

8 100-200
Above 200

‘Viscous Tubrieating distillate

Gaol. 2. 2. :
‘Nonviscous lubricating distillate .
‘Medium lubricating distillate ©...
‘Viscous lubricating distillate ©.
Reridsum :
Distillation loss -

Wz


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .. Laramie... - Laboratory
‘Sample ......PO=85369. -
IDENTIFICATION
cite field Colarada see
"J sandstone. Logan “County

_ SW1/k SE.1/h sec... 22
7.12 Ney Re SU W,

—$,512 feet

GENERAL CHARACTERISTICS

Specific gravity, 0.830......_A.P.I. gravity 39.0° Pour point, ° F. _...0. .
Sulfur, percent, Color, bbrawnish-grean.
Saybolt Universal viscosity at 100° F., ML... see. at ...9 Fay coos 860.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric p pressure, 760. mm. Hg.
First drop, -.26..°C. (29°F)

af

‘StaGE 2—Distillation continued at 40 mm. Hg.

200392 Ge. 7.2. 0.840. 29. 16.8, 39

12225487 ~ B2eG.. Blab. 28 83.1.

13-250 482 m 59ab 1860. 31. 88.3. 56,

4275527 $340. 32. 93.6, 18

15 300572 SB 876, 33.0 96.3. U0
Residuum . a ae 2Ohi.0..

‘Carbon residue of residuum, ad... percent; carbon residue of erude, a3. percent

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ..
Sample

GENERAL CHARACTERISTICS

786... A.P.1. gravity WBe5_° Pour point, °F. _.
Sulfur, percent, Less. 9610
Saybolt Universal vis

200° F., 3h. sec.; at oF, sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

STAGE 1—Distillation at. atmospheric pressure, .. .760. mm. Hg.
oF)

PCC

Percent , ye ARH ck St
O03... 043). .
2 oe ie } ne
: a aan
435 a ee)
5 150 5509. a 53h
6 15 Beag a
8 ms
Uh, 51h
S38 Ak ak
‘StAGE 2—Distillation continued at 40 mm. Hg.
4298

n1m00 a2... Anb... 6895
225 as 56. Teh
18250 482 Sah. 199
1421527 Da 8206
15900 sr ab. 8702
Residuum . . . » 2267 9999.
Carbon residue of residuum, Oalk, percent; carbon residue of erude, Owl — percent

5
£
RERER

APPROXIMATE SUMMARY

Percent sar Vion Viewty
Light gasoline a ? 7.2. Light gagoling |...

Total gasoline and naphtha. Te Bae on "Total gasoline and naphtha

Kerosine distillate . bee see deaT ine Kerosine distillate . .
Gasol... eee ee + 2.0 a AGA. Gas oil . he.
Nonviscous lubricating distillate : ss. RM “BS252873 3h.65O.6 50-100 —_Nonviscous lubricating distillate ~-NO40-3149 50-100
‘Medium lubricating distillate... . a we BD 0880 © 30..6-29.3 100-200 Medium lubricating di 1100-200
Viscous lubrienting distillate _ - Above 200 Viseous lubricating Above 200
Residuum an 28.9. 20,5. Residuum .

Distillation lose.

we


INTRODUCTION AND SUMMARY

Colorado has been producing petroleum since 1863 but only recently has become
a major oil State. The first well was drilled on Oil Creek near Florence, but out-
put was relatively small until discovery and development of the Weber sandstone
reservoir at Rangely. Oil was discovered in the Weber sandstone in 1933, and the
reservoir was developed after 1940, bringing Colorado, in 1949, to llth place among
the 48 States as an oil producer. Colorado's output increased further because of
the discovery and development of many fields in the Julesburg Basin since 1949. By
1954 Colorado was in ninth place and maintained that position through 1955.4/ Be-
tween 1946 and 1951, Colorado's ofl production more than doubled, while the total
United States production increased only 25 percent. It seems probable that produc-
tion will continue to expand in Colorado for many years.

This report presents analyses of 92 crude oils from 73 fields representing 90
percent of the production in 1955. Abridged analyses are listed for easy compari-
sion, and complete analyses are given in the appendix. Oil samples were collected
for study from many different sources, Although many of the newer fields were not
sampled, their oils probably are very similar to those from corresponding formations
that were studied and tabulated.

The oil samples were analyzed by the Bureau of Mines routine method,> 6/ and
the results have been listed and correlated with geological data. In addition to
the routine analyses, nitrogen contents// were determined for nearly all the oils.

This report gives a brief historical background, presents analytical data,
correlates analytical data with geological data, and discusses the data in terms
of utilization,

Most Colorado petroleum samples studied ranged from paraffinic to intermediate,
but a few were naphthenic. A large number were high-quality, low-sulfur, green
oils; however, the Rangely field, representing the largest single source of produc-
tion, produces high-sulfur oil.

4/ Bureau of Mines, Crude Petroleum and Petroleum Products; Mineral Industry
Surveys, December 1955, Monthly Petroleum Statement 399, Mar. 6, 1956.

5/ Smith, N. A. C., Smith, H. M., Blade, 0. C., and Garton, E. L. The Bureau of
Mines Routine Method for the Analysis of Crude Petroleum; Part I, The Analyti-
cal Method: Bureau of Mines Bull. 490, 1951, 82 pp.

6/ Wenger, W. J., and Ball, John S., Analytical Distillation of Crude Oils at High
Altitudes by the Bureau of Mines Routine Method: Bureau of Mines Rept. of
Investigations 4517, 1949, 9 pp.

7/ Ball, John S., Whisman, M. L., and Wenger, W. J., Nitrogen Content of Crude
Petroleums; Ind. Eng. Chem., vol. 43, No. 11, pp. 2577-2581, Nov. 1951.




(CORRELATION INDEX

‘CORRELATION INDEX.

13

SORE
v
y
f
7 Co
t~_] 4
z Zt]
= | ae noe. Fey LY
ma > ome| | Moorea ret
p-~l_-
aT ===" prabeono, PA,
Lhe
/| _—E
/ /
acrSis reaction MDMBER ‘avis Fraction MOMBER
COMPARISON C.1. CURVES COLORADO TRIASSIC (SHINARUMP SANDSTONE)
*
_ Ax ou. FeLo
|]
7
c Pall

} TE DOE EE HUF EARS RIT TOS Fw

f Maan (einer as aa

f 2 Panamera a sg
1 RAEI Thar
I I | It

ANALYSIS FRACTION NUMBER

COLORADO PERMIAN (LYONS SANDSTONE)

® i
ANALYSIS FRACTION NUMBER

PARADOX LIMESTONE DOLOMITE)

COLORADO PENNSYLVANIAN (WEBER SANOSTONE AND

Figure 5. - Correlation-index curves of Colorado oils (Triassic, Permian, and Pennsylvanian

formations) compared with reference curves.


x

55 ca

oN

Cod ‘©58 ~ ~ f
we fa 3 i a
MOFFAT 099 | ROUTT
a Sot 16 r 88 sreafeoar
” : | SPRINGS \,
! 186 2, ‘sa [
[---——. —.__. —e A978
es
6! 97 —
; ro
a RIO BLANCO weEKER | I

086 Dee nn

S
.

1A?)

water” “LARIMER
JACKSON

5

\

~~

GRAND

°
HOT, SULPHUR
‘SPRINGS

+-

—Y costiLLa

J
4

eile rat t— ot
SY _ LEAR pe a ey

pwe ER .
. ARAPAHOE

SLITTLETON

iw SON ean

e /.
§
N ——— \7 SHuso

ve Mose

|

. \
ye
HUERFANO

LAS ANIMAS

mt
SEDGWICK

| py!

: ‘ /YUMA |
ce WASHINGTON g&\/ *» |
~~)
FF 7 |
{ ss 4|———_|
_ 3s i
| 7
io | KIT CARSON 6
. od
“tT i.
aaa | CHEYENNE
LINCOLN | cuEvENNE
|_—————
OT ei0s K 1OWA
CROWLEY | owe __4
|__ atin oa a7
uw BENT =| PROWERS
OTERO | |
|____1_|—___———
°
‘SPRINGFIELD
BACA x

|
| !
| . ; nl .

———_._]
--— | eeagte \ ae ci
GARFIELD . | EAGLE SUMMIT
GLENWOOD (on nampe
‘SPRINGS ¢
oe .. — —L.. > a
a ee *e Ss os
PITKIN
; ra MQ aspen _jeeaovilte 5 raurpLay
° and | aie —.—} x
‘GRAND JUNCTION / QOL id
MESA s ~~ TL PARK
_—“reita | eo Y
[es | (
}— DELTA j ) cHarree/
a GUNNISON \ \~
}-—_.__] Sontrose | “GUNNISON L suit? FREMONT
MONTROSE | eS
oT »
ou 4 SAGUACHE ‘
SAN MIGUEL l ane cry | Suouache
+... ~ mn Ti i
DOLORES ~ swverTon > feeeoe
SAN JUAN | MINERAL ee ee,
eo ———_. ott —_— —. | [ DEL NORTE |
f | | ALAMOSA J
MONTEZUMA ? | RIO GRANDE | v4
3 oy — LAPLATA —_— a : |_ host
CORTEZ = “I67 5 i
“ “ouraNco PAGOSA SPRINGS
} as h ARCHULETA GONEJOS
x5 fait "63 (ad 88 wag conus
Figure 1. - Oil and gas fields of Colorado. cas revo

& Dll AND GAS FIELD
X UNIMPORTANT OR ABANDONED FIELD

ADAPTED FROM FEDERAL GEOLOGICAL SURVEY MAP 625


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Iaramia________ Laboratory
Sample ..PO=5lic36

IDENTIFICATION

GENERAL CHARACTERISTICS

Specific gravity, 0.838. A. P. I. gravity 37a_° Pour point, ° F.
Sulfur, percent, Caen, rei sreen
Saybolt Universal viscosity at 100° Fh sec.;at °F.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD
‘StaGE 1—Distillation at atmospheric pressure, ..760. mm. Hg.
First drop, —25.° C. (77... F.)

i

10

u
ry
B
u
16

Resideum 939. 19.2 —

(Carbon residue of reidaum, a8, percent; earbon residue of erude, -La9_ percent.

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ..

Jars
Sample _ PC-5!
IDENTIFICATION

~Indger Creek, West... field
2nd "J" sandatone. ~
5e3DbrSgh02. feet.

GENERAL CHARACTERISTICS

Specific gravity, 0.7h2....._A. P.I. gravity .5942....° Pour point, ° F. be:
‘Sulfur, percent, .less.than..0.10 less than Color,
Saybolt Universal viscosity at 100.° F.,.32..... sec.; at .....° F., sec,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 11 Distillation at atmoperic pressure, J6... mm. Hg.
FP)

First drop, —22
ee “ahh en RT Rat
2 00 ae Sa. Sal 89.3.
2 1% 16T ..12.8. 28.2 $1.0.
3 100 22 15,0. 43.2 68.6.
415 57 1... BS abs $1.0.
5 150 302 Tal 2.8 an
6 me oT Wh 6a 53.0.
1 m0 392 a9. 7003 i 50.6.
8 m6 aT 26 9 789. U8.
9 20 a2 ad 78.2 BOL. 502
10021527... Bal, TBat BIB on ie,
StAcE 2—Distillation
1200
ras
13250
rae

15 300

Distillation loos

6t


Cota tet

Bureau of Mines
Report of Investigations 5309

CALIFORNIA |

INSTITUTE OF
MAR 6 1957
TECHNOLOGY

LIBRARY.

CHARACTERISTICS AND ANALYSES
OF NINETY-TWO COLORADO CRUDE OILS

By W. J. WENGER, M. L. WHISMAN,
W. J. LANUM, AND J. S. BALL

United States Department of the Interior—— February 1957

metadc38657


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laboratory
‘Sample. P0-52=176,
IDENTIFICATION
field Colorado
Mg_1/4 Sm1/4.

Te 2 Be, Re 87 W

GENERAL CHARACTERISTICS

Specific gravity, 0.825... A. P.I. gravity 42e}....° Pour point, ° F. .
Sulfur, percent, below. 0410 Color,
Saybolt Universal viscosity at 200.° F., 37. sec.;at °F, sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, ...760.. mm. Hg.
First drop, ..24.°C. (....78.° F.)

‘Fracion Peseent som a, en ai dix. a
Te ae wt alae, in fp -
150 ae. bel. 0.887.
2% er Bak To 689.
8 1000 22 Bal. 1269-707.
45287 Ta. 200d... TRB.
5 1580 02... Be9. 2600 78B
6 os eT Bo. S03. TD,
1 200 302 #08. 3509 785,
85 aT eT. 40S 799.
9 250 482 Gol. 4607 83.

rt

m6 aT Bal 408 825,

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ...Laramia........... Laboratory
‘Sample .......PC=55=368... -
IDENTIFICATION
Minto, Worth nnn field

ee eae

GENERAL CHARACTERISTICS

Specific gravity, 0. Gl.
Sulfur, percent, 0.12.
‘Saybolt Universal vise

A.P. I. gravity 36.2....° Pour point, ° F. WS _
— Color, brownish-green...
ty at 100.° F., Wd. see. at.” Fy see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stage 3—Distiation at atronpherieprosere 260, rom. Hg.
BB? Fe)

First drop, .2...° C.
a a ad

10

1200892. BoB. BBA. 0 BMH. 8802. on Bn 1 200 02.9. oBL6. .38.8..
12 maT BAT GLa. BAT 3608. 38 we m5 as 1 51 38
38250482. Ba. 66x68). 5208. $9, 1 250 482 6.2 GLB we 32a,
3425 sa Ba TRa BTR. 30s 80, Mom set 26S BM. 31.0.
15 300 ore Sol. 7805. 886. 2802. 96. 18 900572... 268. AT3... BM 30h.
Rasiduum 18e%. 91 938. 1904. Residum .... 31h 982 936 12.1,
Carbon residue of residuum, ta percent; carbon reside oferude, On®.. percent. Carbon residue of residuum, L198. pereent; carbon residue of erude, La. percent.
APPROXIMATE SUMMARY APPROXIMATE SUMMARY
S066. SAR Visas Pernt Vinty
Light gasoline ws. TBeB... Light gasoline a 59,
Total gasoline and naphtha ‘6208. “Total gasoline and naphtha
Kerotne distillate « als. 4206. Kerosine distillate «
Gas oil. 847. 35. Gas oil

6.
854-4879 3452%2945 50-100
-B19~4892 2945-2741 100-200
‘Above 200

[Nonvisoous lubricating dstilate

Distillation lone

Nonviscous lubricating distillate . 50.100
Medium lubricating distillate... 1100-200
Viscous lubricating distillate Above 200

Residuum
Distillation loss .

zt


The outstanding discovery between 1930 and 1940 was the Weber sandstone oil at
Rangely in 1933. Other discoveries in northwestern Colorado during this decade were
gas at Bell Rock, Craig, and Piceance Creek; oil at Hartsel and Wilson Creek; and
oil and gas at Powder Wash. Oil was discovered at Gramps (Price), and gas was dis-
covered at Point Lookout, both in the southwest and at Greasewood in the Julesburg
Basin.

Elk Springs, Maudlin Gulch, and Oak Creek oil fields and Ashbury Creek, Douglas
Creek, and Pagoda gas fields were discovered in northwestern Colorado between 1940
and 1950. In the southwest gas was discovered at Barker Creek and McElmo and gas
and oil were discovered at Dove Creek. Only one new field, Clark Lake, was opened
in the Julesburg Basin area. By chance the Federal Bureau of Mines drilled into an
oil-bearing zone in the Mesaverde sandstone in Gunnison County while coring for coal.
This zone occurred at a depth of 401-404 feet.

Between 1940 and 1950 the Weber sandstone production was developed at Rangely,
causing it to become the largest producing field in the Rocky Mountain region. In
1940 Colorado's oil production was roughly 1.5 million barrels, which placed it 19th
among oil-producing States. By the end of 1944 the production had doubled, and
Colorado was in 18th place. In 1946 the State had moved to 13th place, with a pro-
duction of more than triple that of 3 million barrels for 1944. In 1949 Colorado was
the llth largest producing State, with a production of over 23 million barrels.

Since 1950 the main activity has centered in the Julesburg Basin9/ as a result
of exploratory work before 1950. Discoveries during 1950 include such fields as
Armstrong, Buckingham, Lee, Loveland, Merino, Mount Hope, and Yenter. These are the
result of the first year of intense activity. Discovery rate since has increased
enormously. Most of these new fields are comparatively small; however, some have
developed intq large producers, Adena, discovered in 1953, had already become
Colorado's No. 2 field by 1955, second only to Rangely in volume of production.
Combined production from Julesburg Basin fields had caused Colorado to move up to
ninth place among the oil-producing States in 1954, and there was no sign of dimin-
ishing activity in 1955. Although there have been developments in other sections of
Colorado since 1950, they have been overshadowed by those in the Julesburg Basin.
Rangely and Wilson Creek were the only fields among the 10 largest producers in 1955
that are not in the Julesburg Basin area (table 1). Statewide production climbed
from over 23 million barrels in 1950 to 27.5 million in 1951, 29.5 in 1952, 35.5 in
1953, 42 in 1954, and more than 53 million barrels in 1955.

GEOLOGICAL DATA

Colorado oil is being produced from formations of six geological time periods:
Tertiary, Cretaceous, Jurassic, Triassic, Permian, and Pennsylvanian (table 2). The
first and for many years the only source of petroleum was the Cretaceous Pierre
shale at Florence, Cretaceous formations have since been found to be productive in
various fields. Oil from Tertiary formations has been found in only a limited num-
ber of fields. It occurs commercially in the Wasatch sandstone at Hiawatha and
Powder Wash, and a small amount occurs with the gas in the Wasatch sandstone at
White River. Oil from Jurassic formations is being produced from the Morrison and
Sundance sandstones at Gramps, Iles, Maudlin Gulch, Moffat, Oak Creek, and Wilson
Creek, Oil from a Triassic formation has been produced commercially at Rangely from
the Shinarump sandstone. A small amount also occurs in the same sandstone formation
at Moffat.

9/ Wenger, W. J., and Ball, John S., Refining Properties of New Crudes; Part 6,

Crude Oils From the Julesburg Basin, Colorado, Nebraska, and Wyoming: Petrol.

Processing, vol. 7, No. 6, June 1952, pp. 821-825.



Location

788; . = . . . . .
6—i52
e—102
1og ©—IIl
1940 195 <_s720e h
| °85 145 |
| 45 40° 8 LOGAN

460

246 e 198
039 alpaca eat

1620 9208 hose lia
5: a9 4 ra tf osTenLine ®

*199 0180
13 ol4

| > 458
ei2z6 7°

125

6°!

H
Figure 3. - Oil and gas fields of Logan County, Colo.
Legend for figures 1, 2, and 3
Discovery Discovery
date Location date Location

Field county (approx. Field county (approx.) “Now Field
Abbott Washington 1952 TL — Goodrich Morgan 1951 140 Muddy Creek
Abbott, North do. 1955 72 Gramps (Price) Archuleta 1935 141 Noonen Ranch
‘Ace Unit. Moffat 1954 73 Graylin Logan 1951 142 Oak Creek
‘Adena Morgan 1953 7% — Graylin, Northwest do. 1953, 143 otis
‘Adena, South do. 1954 75 Graylin, south do. 1953 144 Padroni
Aeron Washington 1952 76 Greasewood weld 1930 145 Padroni, West
Akron, East do. 1955 77 Greasewood, South do. 1954 146 Pagoda
Allison Archuleta 1954 78 Greenwood Baca 1954 17 patk
Arford Logan 1951 79 Greenwood, south do. 1955 148 Pane Creek
Artkaree Yuna 1919 80 Gunnison ore Hole Gunnison 1984 149 Pamnee Hills
Armstrong Logan 1950 81 Hartsel Park 1936 150 Peavy
Ashbury Creek Mesa 1949 82 Hells Hole Canyon Rio Blanco 1951 151 Petz, Northwest
Atwood Logan 1951 83 Hiawatha Moffat 1927 152 Peetz, West
Atwood, East ao. 1955 84 Highline Canal Mesa 1951 153 Peterson
Badger Creek Adams 1953 85 Horsetail Logan 1954 154 Piceance Creek
Badger Creek, West do. 1953 86 Hunter's Canyon Mesa 1955 155 Pinneo
Barker Creek La Plata 1948 87 tyde Washington 1955, 156 Plu Bush Creek
Bar X Mesa 1953 88 Ignacio La Plata 1950, 157 Point Lookout
Battle Canyon Weld 1953 89 Iles Moffat 1927 158 Powder Wash
Battleship Jackson 1954 90 Jackpot Morgan 1955 159 Rago
Bell Rock Moffat 1931 91 Jackson Lake do. 1954 160 Rago, North
Berthoud Larimer 1927 92 Johnson Hill Logan 1953 161 Rangely
Big Beaver Washington 1954 93 Johnson Will, East do. 1954 162 Raymer Creek
Big Sandy Logan 1953 94 Johnson Hill, North do. 1953 163 Red Mesa
Black Canyon Delta 1917 95 Keje Washington 1955 164 Red Mesa, South (Blanco)
Black Hollow Weld 1953 96 Keota Weld 1951 165 Riverside
Blanco La Plata 1952 97 Kiowa Creek do. 1955 166 Roggen
Bobcat Washington 1954 98 Knox Adams 1954 167 Roggen, Southwest
Bondad La Plata 1954 99 Lay Creek Moffat 1955, 168 Rosener
Bonham Logan 1953 100 Leader ‘Adams 1954 169 Rufus Run
Boots Hill Morgan 1954 101 Lee Morgan 1950 170 Rush Creek
Boulder Boulder 1901 102 Lewis Creek Logan 1953 171 -Rush-WilLadel
Bradbury Elbert 1955 103 Liberty do. 1954 172 San Arroyo
Buckingham Weld 1950 104 Liberty, south ao. 1953 173 Sand River
Buckingham, West do. 1954 105 Liberty, West do. 1953 174 shell Creek
Buffalo Washington 1954 106 Little Beaver Washington, Adams 1951 175 Slater Done
Cabin Creek ‘Adams 1955 107 Little Beaver, East Washington 1954 176 Soda Lakes
Camp Creek Washington 1955 108 Little Hoot Logan 1953 177 Springdale
Casement Logan 1953 109 Logan do. 1951 178 Springdale, South
Cedar Creek do. 1954 110 Logan, North do. 1954 179 Spurgin
Chappel Sedgwick 1952 11L Long Weld 1953 180 Sterling
chromo archuleta 1929 112 Long, south do. 1953, 181 Stoneham
Clark Lake Lariner 1944 113 Loveland Lariner 1950 182 Stoneham, South
ciife Logan 1955 14 Luge Logan 1952 183 Stony Point
Cottonwood do. 1954 115 Mancos River Montezuma 1927 184 Sugar Loaf
Cottonwood, South do. 1954 116 Marks Butte Sedgwick 1953 185 Surveyor Creek
Coyote do. 1955 117 Masters Weld 1953 186 Temple Canyon
craig Moffat 1932 118 Maudlin Gulch Moffat 1947 187 Thornburg
Dale Logan 1952 119 MeCallum Jackson 1952 188 Tow Creek
Dale, North ‘do. 1955 120 MeCallum, North do. 1926 189 Turner
Danforth Hills Moffat 1954 121 MeCallum, South do. 1928 190 Twin Buttes
Darby Creek Logan 1955 122 McClave, Kiowa 1952 191 Vallery
De Beque Mesa 1902 123 MeElmo Montezuma 1948 192 Walker
Divide Logan 1954 124 McRae Morgan 1953 193 Wellington
Douglas Creek Rio Blanco 1943 125 Merino Logan 1950 194 West Plains
Douglas Creek, West do. 1952 126 Merino, Northeast do. 1953 195 West Plains, North
Dove Creek Montezuma 1948 127 Messer Morgan 1952 196 White Butte
Dune Ridge Logan 1954 128 Messex ao. 1951 197 White River
Elk Springs Moffat 1946 129 Middlemist Adams 1952 198 Wildcat (Ft Morgan Area)
Empire Weld, Morgan 1953 130 Minto Logan 1953 199 Willard
Fleming Logan 1953 131 Minto, North do. 1954 200 Wilson Creek
Florence-Canon City Frenont 1863 132 Minto, West ao. 1954 201 Windy WELL
Fort Collins Larimer 1924 133 Model Las Animas 1927 202 Winston
Fort Morgan Morgan 1954 134 Moffat Moffat 1924 203 Woodrow, East
Frasco Logan 1954. 135 Mosley Morgan 1955 204 Woodrow, South
Frenchman's Creek do. 1952 136 Mt. Hope Logan 1950 205, Woodrow, West:
Garcia Las Animas 1896 137 Mt. Hope, East do. 1954 206 Xenia
Garnesa Garfiela 1925 138 Mt. Hope, North do. 1954 207 Xenia, West
Gary Morgan 1954 139 Mountain View, East Adams 1953 208 Yenter
Gary, North do. 1954

County

Adams

do.
Routt
Washington
Logan

do.
Routt
Morgan
Logan

Morgan
Washington
Yontezuma
Moffat
Washington

do.
Rio Blanco
Logan
La Plata

do.
Weld

do.

do.
Adans
Morgan
Weld
Washington
Adans
Yorgan
Voftat

do.
Jefferson
Logan

do.
Weld
Logan
Weld

do.
Washington
Moffat
Washington
Moffat

éo
Routt
Weld
Garfield
Yorgan
Logan
Larimer
Logan

do.
Weld
Rio Blanco
Morgan
Logan
Rio Blanco
Adams
Logan
Washington

do.
Adams
Washington

do.
Logan

Discovery
date

(approx.)

1955
1952
1949
1954
1951
1952
1948
1954
1951
1954
1955
1952
1952
1955
1930
1954
1954
1930
1931
1953
1954
1902
1953
1924
1924
1955
1953
1953
1954
1955,
1954
1952
1954
1954
1955
1954
1955
1951
1952
1954
1955
1952
1953
1954
1953
1955
1953,
1925
1924
1955
1951
1954
1951
1923
1954
1955
1954
1917
1950
1951
1938
1955
1955
1952
1954
1953
1954
1954
1950


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
‘Sample

IDENTIFICATION

Zon Creek field
.Mances, shale. _

“27492505 —
GENERAL CHARACTERISTICS

Specific gravity, 0. _ A.P.Lgravity.3408._.° Pour point, ° F. ....20.

‘Sulfur, percent Color, _brownish-; —

Saybolt Universal viscosity at 200° F,, 86... 860.38 9 Fey cucu 980.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD.

Stace 1—Distilation a atmospheric preseure, 760... mm. Hg.
29.90. (...04..° F)

=

ag
8

Beesaneunn H
3S ” Ls
3
8

4451

‘Stace 2—Distillation continued at 40 mm. Hg.
142. 0,852,

7340,
9947.

percent; carbon residue of erud

Reeiduum . . . . 2847.
Carbon residue of residuum, 3a!

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines... laramie..... Laboratory
Sample... P0-S1=290_. -
IDENTIFICATION
field ~felorada
wanda _ “Logan County
hy 932..teet. ‘SE.1/h. SE 1/i, nec. 17,.

T.9 Ne, Re 53 We
GENERAL CHARACTERISTICS

‘Specific gravity, 0.832. A... gravity ..388..° Pour point, ° F. 55.
Sulfur, percent, 0423. Color, . bramnish=graen.
Saybolt Universal viscosity at 100° F.,..0..... see. at .° Foy sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD
‘STAGE 1—Distillation at atmospheric p pressure, ...760.. mm, Hg.
First drop, -2h....° C. (....75..° F.)

Fron Onset

wo ae. 169.
1% 167 «205...
100212 305
15287

160 302...
16 MT 542.
200 992 the
25487... 500...
250 482 Sed
2m 627 ..667. HY.

‘STAGE 2—Distillation continued at 40 mm. Hg.

1 200 a
2 5487 665... 8705...
W250 482.545.

M215 527. bed.

15 900-872 Sal.
Residwum ~Plin3.. x =
Carbon residue of residuum, 52. parent; carton reidue of edo, Mal. percent,

APPROXIMATE SUMMARY

SARL Visotty Viscoty
Light gesoline a $829. Light quoting...
“Total gaooline and naphtha BbaT. ‘Total gasoline and naphtha
Kerosine distillate £009. Kerosine distila
Gasol... 56.0. Gasol. ee ee Al.
Nonviscous lubricating distillate SHa0-28.2 50-100 Nonviscous lubricating 96024880 (33.0-29.3 50-100
‘Medium lubricating distillate . eABG=201. 2Ha2n25_6 100-200 Medium lubricating distillate 880-4889 anaatanas 100-200

Above 200 Viscous Inileting distillate ‘Above 200

‘Viscous lubricating distillate
Residvum . .
Distillation loss.



REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ... Laboratory
Sample ~
IDENTIFICATION
—-Mauddin cule... field
Norrigon,sandatane.....
6729 feet

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
Sample ..

IDENTIFICATION

- field

GENERAL CHARACTERISTICS
Specific gravity, 0.955... A. P. 1. gravity 3b!
Sulfur, percent,
Saybolt Universal viscosity, at 100.°

4 ae $0065 AE ann? Pry coe nee 80s

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillation at atmospheric p pressure, 760... mm. Hg.
First drop, . (.ABL.* F)

Pen Siti S nn ad
12
1% 16T 1.8.

1
2

Pe
415 87 Bal.
6 10 a2
Ce en

T2000 992 anda...
ee ee eee
9 250 482 SAT
as sar 649.

1 200
m5

13 250

uo mS B48
15 300 7545,
Residuum . 999.

‘Carbon residue of residuum, 542... percent; carbon residue of erude, 2a6... percent.

APPROXIMATE SUMMARY

jundence sandstone
—eeeee fect
GENERAL CHARACTERISTICS
1. A.P. I gravity .35e6..° Pour point, ° F. below. 5.

Specific gravity, 0
Sulfur, percent,
Saybolt Universal

Color, steenii
200° FM sec.;at ...? F., 82.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘StAGE 1—Distillation at atmospheric pressure, . 760. mm. Hg.
First PC. (82 FY

t drop, —2T.
Py ta rn en ns
eed 89-3,
2% 167 80.3.
3 100 a2 0s},
4 125 257 S3e2.
5 180 302 SIs.
6 137 a8
7 20 32 ot
8 aT 2.
9 250 482 Mon?
wom er Ts 31,0,
Stace 2—Distillation continued at 40 mm. Hg.
11 200 892... 3320.
12 225 437.840. 86) Shel... 38... —E—-
18250482 Ta? : 3040. :
ams sar Galt ae Bee ae ee
15 300572... Gelb. 898. 2GeK Me gga. 5. go.
Residoum . . . . -Albalt 931... 1965. tea.dark

‘Carbon residue of residuum, 58. perent; earbon residue of crude, , Lab percent.

APPROXIMATE SUMMARY

Percent Spor. SARL Visa nay
Light gasoline erent ee ss -) oe Bh. Light gasoline 0 J ws

Total gasoline and naphtha. eh aS) ‘Total gasoline and naphtha

Kerosine distillate . 10.0. $15 ea, ‘Kerosine distillate

Gas oil . hal Gas oll .

AaB... 853... ab

06. 869-820 3143-2745 50-100
890-899 27.5-25.9 100-200
Peg Above 200
ae

Nonviseous lubricating distillate |
Medium lubricating distillate...
Viscous lubricating distillate
Residuum .
Distillation los «

12.0.

‘Nonviacous lubricating distillate
‘Medium lubricating distillate
Viscous lubricating distillate
Residsum
Distillation lowe.

8


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie. Laboratory
Sample P= S5i=31 _~
IDENTIFICATION
field Golorado a
‘sandatone — Tegan wns County
Bi 1,W7h - 4,489 feck, ed aL. SE. 06: a

GENERAL CHARACTERISTICS

Specific gravity, 0.834... A. P. I. gravity 38.2_..° Pour point, °F. D9 een nn
Sulfur, percent, Qa. Color, . bramnish green.
Saybolt Universal viscosity at 200.° F., i sec.;at ....° F., ee.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stage 1—_Distilatin at atmospheric presure, .260..mm. Hg.
First drop, -23..°C. (..73..° F.)

Pye tg memati TBEE ce

x
STAGE 2—Distillation continued at 40 mm. Hg.

a a eo a eS
we m5 487 Sa Rad BUD.
ha... 16. 863.

18-250 482 863,
4 215527 BI.
15 900512 $897...
Rasiduum . 910.

“98.9...
Carbon residue of residuum, Salt. percent; carbon residue of crude, .a. pereent.
‘* Determined by extrapolation

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Loramie
Sample ..P=49~%

. Laboratory

IDENTIFICATION

GENERAL CHARACTERISTICS

Specific gravity, 0....876.... A.P.I. gravity 3000._.° Pour point, ° F. pelow 5...
Sulfur, percent, _e,

‘Saybolt Universal viscosity atl09_° F.,

59... sec.; at T7...° F.,...19.. see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric p pressure, ..760 mm. Hg.
First drop, 22°C. (.72....° F,)

Pye ree Ee RR RD ot nn ns
1 60 12 10 9046. 7
2% 161 26! ‘Bea2. 3aT Ban
5 10 22 3H, Wak. 3
45257 iy 2d. 38
5 180502 BA. S6aT.. 20
6 os sar Med 200. 22
7 20 82 Pe 5
8 25 a7 308 Saeee
9 250 482 Bad. io,

105 sar alk 367.
illation continued at 40 mm. Hg.

92... 202 Be. Me. THO

4st ...598, 30.4 Wy T36

482 G4. 28.20 Wy ‘Toe8

sot Bel 27 "50 TB.0,
se oe RB 2245. 33 $0.4 220"
Rasidoum .. . . 329 9B 10.3 ko, dare

Carbon residue of residuum, 2520 peroent; carbon residue of crude, . 5+ percent.

APPROXIMATE SUMMARY

Percent Spe SARL visu

Light gasoline ws Light gasoline
Total gasoline and naphtha ‘Total gasoline and naphtha
Xerosine distillate

Medium lubricating distillate
Viscous lubricating distillate

Jen25.0 50-100
2248 100-200
Zhe 3Above 200

9


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laranie__ Laboratory
Sample ..P0=59=372...
IDENTIFICATION
Colorade a
Logan... <n County
SE1/L.SH1/h 3h

REPORT OF CRUDE PETROLEUM ANALYSIS

‘Dake
3831-3876 feet

TON, R53 We
GENERAL CHARACTERISTICS

A.P.I. gravity 3748 ° Pour point, ° F. iS. .
Color, ..bromnish"green
200° F., 3 see.; .

t °F,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, -760... mm. Hg.
First drop, 26°C. (29°F)

ret ane 8p. Geet

en in as, =

0.660.
D2.

23.
28.
5!

52.

TI.
89.
S01.

Aa.
826.

n
2
13
“
6

Light gasoline J...

GENERAL CHARACTERISTICS

Specific gravity, 0.836 A. P. 1. gravity 3748 _° Pour point, ° F. 35
Sulfur, percent, .belom. «10. Color, _bromdsh-gree
Saybolt Universal viscosity at 100.° F., WO... see. at 9 Foy nn 800.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, ..760. mm. Hg.
irst drop, M7. C. (7° F.)

tl rt ae. ee on Frat 2,
1
2 6
3 100
4 ws
5 150
6 16
7 200
8 ms
9 290
25 :
‘Sracg 2—Distillation continued at 40 mm.
nm”
raed
1350
ue
1s 300

Residuum . . . . BAI. 9949 | ga
Carbon redue of rexidaum, ad. percent; carbon resive of eride, 22

APPROXIMATE SUMMARY

‘Total gasoline and naphtha
Keroaine distillate...

Nonviacous lubricating distillate «
Medium lubricating distillate
‘Viscous lubricating distillate
Residum. 2.

&y


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines... Laramie.

Sample ...... POk9=75._.
IDENTIFICATION

_- Laboratory

Colorado

GENERAL CHARACTERISTICS

Specific gravity, 0.807... A. P. I. gravity .u3e8_° Pour point, ° F.
Sulfur, percent, ...lees. than 0910 Color,
Saybolt Universal viscosity at 200° F., ...36.. see. at ....° Fey an 860.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stage 1 Distillation at atmospheric pressure. 160. mm. Hg.
First drop, —ih.° C, (11° F.)

Set
a

Bl,
83.

22.
“16.
1

“82

As,
21.
oT ee
oo Boonen
2.
26.

18 250482 _ BAB. BB ak.

1 25 SBT... BG Ee 852. Bh.6..

15 300 tt... 6B... BU. B61. 32.8. ~
Raduum .. . . el. 99.2 aol... 27.3.

(Carbon residue of residuum, 11. percent; carbon residue of erude, a2 percent.

APPROXIMATE SUMMARY -
SARL Vecouty Percent
SB) Light gasoline... B29.

REPORT OF CRUDE PETROLEUM ANALYSIS

Jaranie

Bureau of Mines

Laboratory
Sample —

IDENTIFICATION

Specific gravity, 0..726,
Sulfur, percent, Less.
Saybolt Universal viscosity at ‘0° F, se see. werat

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1— Distillation at atmospheric pressure, 180. mm. Hg.
First drop, 26°C. (_19..° F.)

Residoum . “3 92 186T

Carbon residue of residuum, 050. percent; carbon residue of crude, sO. percent.

APPROXIMATE SUMMARY

“ST633«h 0-100
33elm31-7 100-200
Above 200

Viscous lubricating distillate
Reidvum . . :
‘igtilatfon loss

‘Total gasoline and naphtha

Medium lubricating distillate
Viseous lubricating diatillate
Residoom ss
Distillation loss

st




ACKNOWLEDGMENTS

The work herein was done under a cooperative agreement between the University of
Wyoming and the Bureau of Mines.

Samples and field data were collected by Paul Biggs, J. V. Finnegan, J. A.
Fraher, C. Q. Cupps, and Joseph Fry of the Bureau of Mines and N. W. Bass and H. J.
Hyden of the Federal Geological Survey. The authors thank the 40 different oil-
producing companies that permitted samples to be obtained for study.

LOCATION OF OIL- AND GAS-PRODUCING AREAS OF COLORADO

Oil and gas fields are shown in figures 1, 2, and 3. Figure 2 is an enlarged
map of the Julesburg Basin area in which the greatest field population occurs, and
figure 3 is an enlargement of Logan County in which the greatest concentration of
fields within the basin occurs. Nearly all of the present oil-producing fields of
Colorado are in the northern half of the State. Those in the northwest are in or
near three structural basins - the Uintah, Green River, and North Park. Those in
the northeast are situated in the Julesburg Basin. The area near the San Juan
Basin, extending into southwestern Colorado, is being developed for gas production,
although several small fields have been producing oil for many years. The search
for gas in southwestern Colorado will doubtless result in discovery of several oil
fields. A few gas fields have been opened in southeastern Colorado.

HISTORY OF OIL AND GAS DISCOVERIES IN COLORADO

Petroleum was discovered in Colorado in 1863 in the Florence field®/ in a
structural basin known as the Canon City embayment, often considered to be an ex-
tension of the Julesburg Basin. The Canon City field was opened many years later.
The two fields have been commonly known as the Florence-Canon City field. The
Pierre shale has been the only productive formation despite attempts to find others.
The production rate in 1955 was about 90 barrels of oil per day. Except for the
Garcia gas field, no other discoveries were made in Colorado until after 1900.

In 1901 and 1902 oil was discovered in the Mancos formation at Rangely in
northwestern Colorado and in the Pierre formation at Boulder field on the edge of
the Julesburg Basin. Noncommercial gas discoveries were made at DeBeque in 1902,
at Black Canyon in 1917, at White River in 1917, and at Arikaree in 1919. A small
amount of shallow gas was known to exist at White River in 1890, but the deeper gas
was found about 1917,

Between 1920 and 1930 a number of fields were discovered that have produced
considerable oil. They include Hiawatha, Iles, Moffat, Tow Creek, and North McCallum
in the northwest and Berthoud, Fort Collins, and Wellington along the edge of the
Julesburg Basin. The Canon City extension to Florence field was discovered during
this decade. Oil and carbon dioxide gas were found at South McCallum, but the field
was never developed. Gas was discovered at Garmesa and Thornburg in northwestern
Colorado. During this period four minor discoveries were made in southwestern
Colorado at Chromo, Mancos River, Red Mesa, and South Red Mesa (included in Blanco
field). A gas containing helium was discovered at the Model dome in Las Animas
County of southeastern Colorado.

87 Barb, Clark F., The Oil and Gas Industry of Colorado: Colorado Sch. Mines
Quart., vol. 37, No. 2, April 1942.


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines

larante orator
Semple PESIR=283 Taborsiony

IDENTIFICATION

Colorado,

GENERAL CHARACTERISTICS

Specific gravity, 0.836... A. P. I. gravity .3748..° Pour point, ° F. .....30.
Sulfur, percent, ... Color, .bromish-green.
Saybolt Universal viscosity at 100° F,, 2. sec.;at .....° F., sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘StAGe 1—Distillation at atmospheric pressure, 760. mm. Hg.
F)

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ..... Laramie... Laboratory
Sample ...P0-51=287...... oe
IDENTIFICATION

T/L
TID We RST We
GENERAL CHARACTERISTICS
Speci gravity, 0.896 A.P.L.gravity27:8_° Pour point, ° F
Sulfur, pereent, ..
Saybolt Universal Soul at or,

U3. sec.jat °F,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Srace 1 Distilatign at atmogphers presure, 760 mm. He.

First drop, ..29...°C. (..Bh.° First drop, .

Pregtion Out at Percent 4 Sno “Mat er Sie: we ae Fine
150 149. O69. 0.663. 81.9

2% wT ek 88 672 Wel Bal. Shab,

3m ae S78 Ce 6543. 21. 5205.

415 ar 92 0 Ths. Bal. 2h. 50.8,

5 150 oe ba 23h 76k S3a7. 26. 50,2

6 1s ar SAS. 289 780... 969. 26. 5108.

7 200 992. Sad. Thad 196. 6.3 28 5140.

85 ar 3B 378 ‘bor. 43.8. 27 $049.

9 250 ast ah “haa B19 ‘Mde3. 28 6548.

ee ee 830... 3900. 28 ‘Dali
‘STAGE 2—Distillation continued at 40mm. Hg.

Sr a ee oe ae Co ee 36.2. 31 1649. WO 38 Bek.

om a SA SSA BLE 35.8. 28 80.8) cha 50. 9.2. hs

13 250 ae S42. 6043 859 33.2. 31 8505. 52. Gs, 8348

wom sar UT. 6540 869. hed 32 904.0 $2. 88. 88.2... 66
15 900 mz. 7049 877 29.9 33. 95.0. ..100.. «00 98.2. 105.
Residuum 215. Bab. one 18.9. ‘ten. dark -. 2 Teo. dark
Carbon reidue of residuum, _ad percent; carbon residue of erude, .baS. percent. Carbon residue of reskduum, li sercent; carbon residue of erode. 45. parent.

APPROXIMATE SUMMARY APPROXIMATE SUMMARY
Fact snr TAR Visa Povent sn Ge ety

Light gasoline. eee ce To. 0.698 Ta. Light gazoling 0. $86,

Total gasoline and aphthe . . The. 0.251. Bbad. ‘Total gasoline and naphtha 0. 38

Kerosine dstilate . “813.. 1u2.6. Kerosine ditllate -Be

Gas oil « : DED : 36.8 Gas ol 6.
Nonviacouslubrentng distillate « DID D 111 AMS. [89620877 394852969 so-1oo —_Nonviseous lubricating ditlate Bat 3420-291. 50-100
Medium lbricating datilate . ... fill 3x0. BYT=aBB2 29492289 100-200 Medium lbricating ditliate 881-289 =
srs ibriting tian : eee _ Above 200 Vincous lubricating distillate
Residuum . Fees : 25 8d. 18.9. esiduum :

Distillation loss. sees 18. Distillation loss

o


REPORT OF CRUDE PETROLEUM ANALYSIS

de,

Bureau of Mines ...... Jar
Sample ....... P=

IDENTIFICATION

Laboratory

GENERAL CHARACTERISTICS

© Pour point, °F. -.
Color, .
sec,

Specific gravity, 0,037.
Sulfur, percent,
Saybolt Universal viscosity at 100 F.,

ALP. 1 gravity

13. sec.;at ....® F

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Saag 1 Distllatign at atmospherieprasare, 160.. mm. Hg.
First drop, ..26...°C. (...79.° F.)

ite Bee $e:
1 0 me Og. 0...
2% set ....203 663. BL,
re ae en 707. 8.6
41 ast SB 239. 0.0.
5 0 2 53 759... Shad
6 15 MT 8. 115. S12.
7 200 392.308. 788... MB
8 225 487 3. S02. N5.2.
9 20 482 59 81s. ra
SC a nS: oe 1: ee Cee
‘STAGE 2—Distillation continued at 40 mm. Hg.
1 2000 892 343. Ug.2. 36.04. Lo.
rr a nS a oe) 38.48. vel
13-280 482.549. S842. 33,8. 23.
Mom eer 5.3 685. B.0. mi
15 300 72. S46... 6901. 29.3. Ad...
Resduum . 28.2. 97.8 20.2

Carbon residue of residuum, 11.3... pereent; carbon residue of erude, Lali... pervent,

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .....laramd - Laboratory

Sample... —
IDENTIFICATION

Springdale. field

‘Graneros.(?)."D" sandstone. i

A738. Leet

“pa Tew, Re 85 te

GENERAL CHARACTERISTICS

Specific gravity, 0...829.... A. P. I. gravity. Pour point, ° F. ..40..

Sulfur, percent, below 0410 Color, ..Browaiels gree

Saybolt Universal vis at 100° F,..40_. $00.5 at naa? Fey oon OE

DISTILLATION, BUREAU OF MINES ROUTINE METHOD
‘Staos 1—Distillation at atmospheric pressure, .760.. mm. Hg.
First drop, 22...° C. (....72..° F.)

ee

aif

1 50 ae 29.
2 7% 1T

3 100 22

415 287

5 150 302

6 1% ar

7 200 302

8 25487 ..

9 350 482

125 sa

‘Stace 2—Distillation continued at 40 mm. Hg.

um 200308
2 25 aT

13250 aa
MoS sat
163005

Residoum . .

Carbon residue of residuum, a3. pereen

hon residue of erude, 28. percent

APPROXIMATE SUMMARY

Prreant Soe Visit SAP Vimar
Light gasoline. Le . Light gasoline sss. 1591.
‘Total gusoline and naphtha Ta. ‘Total gasoline and naphtha ~-6145.
Kerosine distillate . t Kerosine distillate 43.2...
Gas oil . Bh. 7.0. Gaol... 2... 3740.
Nonviacous lubricating distillate. teense (853-4878 31-2927 50.100 Nonviacous lubricating distillate . 34.0230.2 50-100
Medium lubricating dstilate . . 2 ss 4 BS 29.7-28.l 100-200 Medium lubricating distillate... 30.2n28.6 100-200
Viscous lubricating distillate... . ‘Above 200 Viscous lubricating distillate - Above 200
Residuam . sea Reldum ee
Distillation loss . Distillationows ee

ss


REPORT OF CRUDE PETROLEUM ANALYSIS

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .....Laramia, Laboratory Bureau of Mines ....laramte.. Laboratory
‘Sample... P=55=1 — Sample .......F0=51=26h..
IDENTIFICATION IDENTIFICATION
field _Colarad

Tonia, Hest.
“AJM. sandstone. _
“Upod pil te —

T. 2M, Re Sk We
GENERAL CHARACTERISTICS

Specific gravity, 0.810... A. P. I. gravity 3.2
Sulfur, percent, less.than.0.10
Saybolt Universal viscosity at 100° F., 39.

© Pour point, °F. 60...
Colo green.

sec.jat °F,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Srace 1 Distilagion at atmos

rie pressure, .760.. mm. Hg.
First drop, 2 °F)

GENERAL CHARACTERISTICS

Specific gravity, 0.829... P. I. gravity .2942_.° Pour point, ° F, 28.
Sulfur, percent, >sa_than. Color, brown:
Saybolt Universal viscosity at 100° F. 39... gee at ...? Fy see

DISTILLATION, BUREAU OF MINES ROUTINE METHOD
180. mm. He.

‘Stace 1—Distillation at eric presoure,
First drop, —27..° C. wae ee

Praglon __Outat - ret! rie gue et Pretion Ot Peet cM: ox
Bate eg— Pree ect BS. oe en te wh, No a ah. ?
16 ae 2.7. 81.6. ae
2% 16r 83 IES. 1% 16T
3 10 ae 2. ae 100
4 1% 287 21.2. -- 05..

5 190 802 27.8. $6.2.
6 ms ut 32.2 52.0.
1 00 92 | 33. 9.7.
8 225 4ST 42,6. ohh}.
9 250 482 lbh 43.6.
102m 627 Sha. 1a.2.

‘Stace 2—Distillation continued at 40 mm. He.
m1 00 302 $8.9... 32.8. BeBe lO.
eos ast OW Are. B60... iS.
ws 280 482 M6940. Shab. 90.5. Ss.
om set 6 76. 32.7 ued 26.

1 900 512. MeL. 2202. 27.3. — 100.
Residsum . « "98. 20.8. too. dark.
‘Carbon residue of residuum, 346 percent; carbon residue of crude, 08. percent.
APPROXIMATE SUMMARY
Pace oo sar Voom Voter

Light gasoline J pee Mi. 0692. wuJ3,0. Light gauoling ws.

“Total gasoline and naphtha “323.0733. BLS ‘Total gasoline and naphtha

Keronine distillate : 12 Sa68 Blo. 13.2. Kerosineditillate . . om

Gas ofl « oe + . ee DGD BHO 320. Gol. eee _ a Ab .2.

Nonviscous lubricating distillate Do : ~ALh. ‘BL6=2891 35.8-27_3 50-100 Nonviecous lubricating distilate | | | || 858-4883 332-28.8 50-100

‘Medium lubricating distillate... . 2.1. B91=.905 27-3—24e9 100-200 ‘Medium lubricating ditillat 88324890 28, 100-200

Viscous lubricating distillate Tenens emenne Above 200 Viscous Tubricaing distillate ne Above 200

Residvom Residaum . ‘Bho.

Distillation loss « Distillation ona -



REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines... Waramie____ Laboratory
Sample ~

IDENTIFICATION colorado

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Paes — Laboratory

Sample

GENERAL CHARACTERISTICS
GE A.P. I. gravity 3L+5._° Pour point, °F. <—

Specific gravity, 0.
‘Sulfur, percent, —.

os ——

IDENTIFICATION
—Thes_Dome_
Sundance sanistone,
—_3}R2=3ph2 Toot.
GENERAL CHARACTERISTICS
Specific gravity, 0.868... P. I. gravity ~3is5_° Pour point, °F. —!
Sulfur, percent, 9, Color, .

Saybolt Universal viscosity at 17° F.,..

22. sec. at 100. F,.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

a ad

‘Saybolt Universal viscosity at ..17° F., 8h. sec.;at 200° F., Gl sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stags 1—Distillation at atmospheric pressure, .760.. mm. Hg.
First drop, 92...°C. (_..13h° F,)

ee Sit, wR oe cd

ue
af

‘Carbon residue of residuum, 946. percent; carbon residue of erude, . ed. pereent.

APPROXIMATE SUMMARY

‘Viscous lubricating distillate
Residuums
Distillation

ec


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .....laramte.... Laboratory
‘Sample... P0-51=309 -

IDENTIFICATION
Koota..(Grover). field
Dakota. "J". sendeton
“1822.2. 14366.

GENERAL CHARACTERISTICS

Specific gravity, 0.888._.._A.P. I. gravity
Sulfur, percent, 1988. than 0010
Saybolt Universal viscosity at 100.° F., 59.

38a4.° Pour point, ° F. .....Bs
Color

sec.;at °F, sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines

Laboratory
Sample —

IDENTIFICATION

‘qeoup *BY sandaton
2989. Leet _

NE 1/4 SE 1/7 sec. ra
RAL, RS Ste

GENERAL CHARACTERISTICS

Specific gravity, 0. Pe
Sulfur, pereent,
Saybolt Universal vii ‘at 100° py,

ABE mavity- 3722.° Pour point, ° F.
0.10 Color,
oh. se0.5 At oe? By see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1—Distillation at atmospheric pressure, ..760. mm. Hg. ‘STAGE 1—Distillation at at eric pressure, ...760 mm, Hg.
First drop,27.......°C. (-.8L..° F,) First drop, ..20...° C, (..422..° F.)
Percent He Poe et ‘eet Sar, e Percent on, arise. “wt eo iat ee. fae
cr oe oS. i} ce By. ‘
Yeh. Dah 0.649. 8665. . .
268, ez. 885. B18 tek. ..GL67. 26. 206. Thad. Bad.
Se. Aad “TAS. $1.0. 18 53.6 Bol 600. 6307.
Be3., 1807. 145. $809 23. B0a8. B08... AdeS. 58.42.
B08. 24ed “788. “Bhe0. 26. 50.0. 509. 125 5347
50. 2048. 779. Hal 26 Bla. Sul 2269 Lad.
AaT 3400 794, 4607 27. B4e5.. dels... 2743. Zab.
Me8  3809 808... eo BaD 3803 dbe7.
ne Ye re 565... 3768 la
10 275 a7 eB Shel 834 "3802, 80. “Bah. ee ee 3942
‘STAGE 2—Distillation continued at 40 mm. Hg. StAGE 2—Distillation continued at 40 mm. Hg.
200 aot. Dl Bad. 38 BQ RO... me 00 392 Bed MTD. 0. BUR. 3606. AB...
32 25 aaT B08. Soh 31. AB chee 32225 aT G00. BSad BUS. 3640... AB.
13 250 a2 ...Bef. 3298 32 BR 60. 33250 a2. 603. 853 bel Sh.
1425 827 Sot 29.9. 36. 10. 80. 2m 527. Sa. 867 3147. 66,
15 90052 2709. 38. 6. 9B. 1 300672. Gal. 876. 3029, 9...
Residuum . Residvom .. . . 2740. 93h. 208.
Carbon residue of residuum, 48. percent; earbon residue of erude, a2. percent. ‘Carbon residue of residuum, 349. percent; carbon residue of erude, ..he2. percent.
APPROXIMATE SUMMARY APPROXIMATE SUMMARY
Pace tA Vinay Perce a cA Viney
Light gasoline JJ... _ wae «100. 1393. Light gasoline... pee B09.
‘Total guacline and naphtha nae = 5869. ‘otal gasoline and naphtha Shed
erosin distilate 2 O66. ‘Mal. Kerosine distillate hag
Gasol... Cs  [BBA0. Gasol... :
Nonviscous lbriesti 20s8.  (BB9-aBBA 8542-2546 50-100 Nonviscous lubricating distillate . |. “ier SAE: soa
Bs0.  ‘BBdeg89A 2846x2648 100-200 Medium lubricating distillate 877.881 2949-2941 100-200
: ‘Above 200 Viscous lubricating Above 200
94200 187 Residaom 2205.

Distillation loas



REPORT OF CRUDE PETROLEUM ANALYSIS REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines __Laramia_________ Laboratory Bureau of Mines Laramie _ Laboratory
Sample .......PG-52=181.___ Sample ...PO-BS-Uh —
IDENTIFICATION IDENTIFICATION
Colorado—

Logan.

‘Sei iW T/i secs.
T. 11N., Re 52 We

GENERAL CHARACTERISTICS
A.P.L gravity 2642.° Pour point, °F. - 50.
t 100° Fr, UB. see.; at

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, ..760_. mm. Hg.
First drop, 29°C. (_.8h.° F.)

GENERAL CHARACTERISTICS

Specific gravity, 0.825.._A. P. I. gravity .10,0.° Pour point, ° F. .....60_.
Sulfur, percent, 0,13 Color,
Saybolt, Universal viscosity at 200° Fy B20. a nu? Foy nnn 886.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, .260... mm. Hg.
First drop, -23....° C. (73..° F.)

ste, he se i

istillation continued at 40 mm. Hg.

02S. 0. Bar.
437.
482 7
B27 on
sme
Residuum . 5. 95.5. 93

Carton reidus of residuum, .5a6. percent; carbon residue of erude, "te percent.

* Determined by extrapolation

APPROXIMATE SUMMARY

Light gasoline. ss

‘Total gasolin
Kerosine distillate
Gos ofl « tee
NonviscousYbricting distillate |<. .
‘Medium lubricating distil

‘Viscous lubricating
Residuum .
Distillation loss.

6


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie a Laboratory
‘Sample PO-55=16) a
IDENTIFICATION Geter 1.
fender
Se I/we Ty ees 1

Tiw, kt
GENERAL CHARACTERISTICS
Specific gravity, 0..813

Sulfur, percent, 0410.
Saybolt Universal viscosity at 100° F., .38....see.zat ....° Fy, see.

ALP. Lere

ty 2.6_.° Pour point, ° F.......5,
Col

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stace 1 2. Distillatg n at atmos; erie pressure, ..760.. mm, Hg.

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines. Laboratory
Sample
_Buekinghan fet IDENTIFICATION
waaay. (WO"y saiastone
8110 = 6722 feet

GENERAL CHARACTERISTICS

Specific gravity, 0.. $38 ° Pour point, °F, ....60....
Sulfur, pereent, ..1e88 than Color, brown:
Saybolt Universal viscosity at 190° F., lb... see.pat ou. Fy see.

ARs I. gravity 38-0

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘StAGE 1—Distillatjon at atmoggheric pressure, 780... mm. Hg.
8 F)

2C.¢ 5) First drop, .28...°C. (
1 ae DRT.
87.6 2 1% 167. Led.
phe. 3 100 ag. Wed
Shel 4 156 57 B08
3g:8- 5 150 02 Be
$8.5 6 os a
2.8 12000 32a
4 8 ms an Be
248. 9 250 aan Be!
Teh. 105 sets
Stace 2—Distillation continued at 40 mm. Hg.
80,8. __Uo. un 200 898
85.8 US. as ast. Bod
20ab 88. 1320 ane 200
95.0. 76 Me ame ser Bol.
M24." 130 15 300 sree,
109.5 Residuum .
Carbon residue of residwam,
APPROXIMATE SUMMARY APPROXIMATE SUMMARY
Light gasoline . 13.9 3 gasoline . 25. D8
“otal guscline and naphtha iad. Te intand ami Ste
ban Kerosine distillate W203
: 3606.
Nonvieous lubricating distiate HEA oa 3344-30.0  s0-100

8.9 100-200
Above 200

Mediam lubricating distillate .
‘Viscous lubricating distillate
Residum :

Pha...

30.0-29.3 100-200
_ ‘Above 200
21.0.

Medium lubricating distillate
Viscous lubricating distillate

Residuora .
Distillation lone .

wz


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
Sample

- Laboratory

POs:

IDENTIFICATION

GENERAL CHARACTERISTICS

Specific gravity, 0.85. A.P.I. gravity $8e4...°. Pour point, °F.
Sulfur, percent, 0044. Color,brommi.sh—b lack.
Saybolt Universal viscosity at00.° F.,, 43.....see.;at ....° F., sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—Distillation at atmospheric pressure, .. 760.. mm. Hg.

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie Laboratory
Sample... PG 2-37. -
IDENTIFICATION
Rangely. field Colorado... -
Meber sandstone - Bio. Blanco County
-SJ52n6355.. feet. NW 1/L NW I/h sec. 35,

T. 2 Ney Ry 102 We
GENERAL CHARACTERISTICS

Specific gravity, 0... 850... A.P.I.gravity 340° Pour point, * F. below. 5... on
Sulfur, percent, ..0472. Color, ..bramniab=black.
Saybolt Universal viscosity at 100 F., U5... see. at 0.9 Fay see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘StacE 1—Distillation at atmospheric pressure, ..760.. mm. Hg.
First drop, ...27..°C. (....81.° F.)

Si, eS 0 Percent fon, andy “Bh on Se te
1, a ee ret BFE wa.
1 90 122 O49
2% 16 22 Tab
8 10 22 3.3 Te.
4a ast 63.9. 7
5 190 802... 545. 5109. 18.
6 me wn 2 53.2. 20.
7 200 3920S L902. 22 -
8 25 437 542. 2h. $3.8.
9 250 482 549 28. £106.
28 100m set 78 306... 3, 7040.
‘SAGE 2—Distillation continued at 40 mm. Hg. ‘STAGE 2—Distillation continued at 40 mm. Hg.
M200 892 .2aB..., A907... 0.848. 86.0... 32 80.6. 42. 2Q... M200 92. B4T.. NTad... 0.58. Bek. 3. Theo. ool. 2...
2 mS 4ST AAO Ga. ‘36.2.. _29 Ce ae roe om a 8 S868, 31. 37 Tt 30.
33250482 BaSn 62aQn- BSB. BSa4... 30, BGed.. 94. 45. 18250482 byB 60? 875. 3002. 38. &. 50...
M8 BET eh. BTS. BIS. $0.6... 34 89.2. ..72..... co M558. BB... ..6740. Bol, 2608. J 90. 19.
15 900 512.745... Tab. 882. 2809 36. 9600. T8086. 15 900872. BB. 7306 903. 2502. 26, 179. 85.
Reidum .. . . 2566... 9Ba4. ME 1Te8. “tea dark Reviduum 25.0... 98.6... 957 al
Carbon residue of residuum, 267. percent; earbon residue of crude, a6 percent Carbon residue of residuum, - 945. pereent; carbon residue of crude, 2a. percent.
APPROXIMATE SUMMARY APPROXIMATE SUMMARY
Light gute... eB TT Light gasoline 7 a 2 Gal 0.685... 150d,
“Total gasoline and naphtha Ses RBoL. 0.788. ‘Total gasoline and naphtha ce abla 0.737... ‘6005.
Kerosine distillate... “Ls. 804... Kerosine distillate 21° 810 U3...
Gasol se AMO. B39... Gasol . cee oe Galt 850....... 3500
Nonviscous lubricating distillate . + 268. 854-879 Nonviscous lubricating distillate ce 12.5. 867-0895 321a7-2646 50-100
Medium lubricating distillate . tere Bad. ‘Medium lubricating distillate... 2s Bol. B95—907 26.6-2h45 100-200
Viscous lubricating dist . — ‘Viscous lubricating distillate... 08, 9072908 2b! 3Above 200
Resi . . . Residuum Se Ba 952... Abel
Distillation loo Distillation lows. . weet eee eee Loh.

ws






REPORT OF CRUDE PETROLEUM ANALYSIS REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines

_——larauie_—__.
‘Sample P0=52=176

IDENTIFICATION
= Morgen County
NE AL AL sec. 65. a ME WAIN WA 0000 Ls
TS Ney Re 56 We Fe 6 Wey Re 68 We
GENERAL CHARACTERISTICS GENERAL CHARACTERISTICS

— A.P. I. gravity 3846_° Pour point, ° F. 20... Specific gravity, 0.885... A. P. I. gravity .38a0.° Pour point, ° F. .
wan 0410 Color, .. brownish green. Sulfur, percent, .less.than 0.10 Color,
FW. see.j at °F, 800 Saybolt Universal viscosity at 100° F., 42... sec.jat ....° F, sec.

Sulfur, percent,
Saybolt Universal viscosity at 1

DISTILLATION, BUREAU OF MINES ROUTINE METHOD DISTILLATION, BUREAU OF MINES ROUTINE METHOD
‘STAGE 1—Distillation at atmospheric pressure, .760... mm. He. StAGE 1—Distllation at atmospheric pressure, ..760 . mm. Hg.
First drop, 22°C. (_Bh° F.) First drop, 24 °C. (_.76..° F.)
is a a Ss F a a an

1 200 1 200 92.
2 me 35 aT
13 250 1 250482
reer

ro

Vea Pers S00 Viesy

Light gusotine = Light gasoline... ss 0678
“Total gusoline and naphtha... vs te 25.9.. ~ ‘Total gasoline and naphtha Soe
distillate Kerosine distillate...
Gaol... 2...
50-100 Nonviscous lubricating distil
100-200 Medium lubricating distillate...
Above 200 Viscous Iubricating distillate» se
Resdvum De 82.
Distillation lows se

848-0878 3624-3050 50-100

876-2884 800072806 100-200

ese cee Above 200
2008...

Ww


REPORT OF CRUDE PETROLEUM ANALYSIS

‘Bureau of Mines Laramie .. Laboratory
Sample ot: -
IDENTIFICATION
— orth. field Colorado.
Dakota ah ‘akota sandstone Jackson
“4700-6060 To. Hes Re12.Mo.

GENERAL CHARACTERISTICS
B.

Specific gravity, 0...789...._ A. P. I. gravity ..47a8..° Pour point, °F. ........helom.
‘Sulfur, percent, belaw. 210. delow olen AA
‘Saybolt Universal viscosity at 100.° F., 32..... sec.jat ....° Fy,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, ..740.. mm. Hg.
First drop, 30°C. (_._a6° F.)

Py eg rece Erie on we
1 50 122 045. 89.9. -
2 1% 167 2o3. oN TeB 10... 566.
8 100 aie el a6. 20. 5308.
45 ast a0 B92 2B. BRO.
5 160 B02 1006. Bhe2 25. B22.
6 17% 84T 1206. B06 26. 548.
7 200 ge a Ce
8 25 aT Oe Me 26 8408,
9 250 482 Alel. ALeT. RT 6805.
10 275527 ....1040. oo B02. 2B... 12.3...
‘STAGE 2—Distillation continued at 40 mm. Hg.
re ee oe a Bo BAB. oo BR oo
120-225 487... Bad. a . BB. 004. AB. 28.
18 250 482 Bak. ATO. 186A 2 ro ns oY
M25 SAT Let. 291. a7. BB. AB. 10.

BBO.
156 30 Iz —_
Residoum “8Ge7.. (BTT._.
Carbon residue of rexidaum, a0. percent; carbon residue of erude, OaO) percent.

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ... Laramie.
Sample 36L. =.

IDENTIFICATION
South McCallum. field
Frontier sandstone a). —

GENERAL CHARACTERISTICS

Specific gravity, 0.888... A. P. I. gravity .2748 ° Pour point, ° F. below. 5.
Sulfur, pereent, 0431... Color, .. dark. green.
Saybolt Universal viscosity at 00° F., $9 sec.5 at aia? Fey viuene 800.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD
STAGE 1—Distillation at atmospheric pressure, 568. mm. Hg.
First drop, 95...°C. (..203..° F)

ee a

=e

os D8 2
Carbon residue of residuum, B42. percent; carbon residue of erude, Led percent.

APPROXIMATE SUMMARY

Ar Vioaty TART Vinay
Light gasoline... 8908. Light gasoline.

‘Total gasoline and naphtha Blak Total gasoline and naphtha

Kerosine distillate Mad Kerosine distillate - :

Gaol... ee “BST BTa8. Gaol... "33.6
Nonviscous lubricating distilat *ABE=eB77 $444-2949 50-100 _Nonviseous lubrieating distillate . -28.7=26.4 50-100
Medium lubricat - 100-200 Medium lubricating distillate . 26 lym2h,.3 100-200
‘Viscous lubricating distila owe 300 Vso Inhrng eat Dye 3=21 Above 200
Residuum ss. . 13.2.
Distillation loas

6e


Table 2, - Summary of data showing sources of samples and some characteristics of Colorado crude oils
arranged according to geological time periods of productive formations, (Con,

Yield, volume-percent

Properties of crude oi] ractions
Carbon | Ratio, 8-12, inc.
Viscosity | Pour | Sulfur, | Nitrogen,| residue, |nitrogen | 1-3, inc. (kerosine | 13-15, inc,
Productive Gravity, at 100°F,,] point,| weight-] weight | weight- |to carbon] (light | l-7,ine, | and gas | (lubricat-
Field County Formation 1/ Depth, feet | °A.P.I, S.U. sec, | OF, | percent | percent | perce residue | gasoline) | (naphtha) ofl) ing ofl)
Cretaceous period (Con,)
Mountain View, E, | Adams nyu ss, | 5,521-5,512| 13h] B.C. 36 us <.10 03 038 25.2 25.9 14.8
Noonen do. do. 6,2h0~6,245 | b1.5] B.G, 38 M6) <.10 O11 046 23.9 23.6 16.4.
Padroni, We Logan do, 4, 803-b, 39h | B.C. 39 15 +10 2072 2055 21.5 24.6 17.7
Pawnee Creek do. do. 9965-,968 | b1.3] B.C, 36 5 <.10 205k 205k 23.3 27.9 7
Peetz, We do. "p" ss, | 5,126-5,132] 69.8 KEN.P.AL1 | <32 <5 <.10 000 _ 31.1 +0 20
Do. do, ngn ss, | 5,306-5,312| 36.2] B.C. 48 50 1 2093 206 18,8 23.7
Plum Bush Creek | Washington do. 4, 952-b,962] ho.o | D.c, he 6 13 2053 2035 18.6 26.3
Rago do. npn ss, | ,812-1,820] 36.8] G.Blk 51 50 212 07h 030 17.0 22.7
Rangely Rio Blanco] Mancos sh, | 1,55 39.4 | Green ho 5 <.10 2023 077 23h 32.6
Sand River Morgan npn ss, | 5,160-5,176| 37.6] B.C, 43 <5 13 2072 2051 19.7 2.6
Springdale Logan do, 4,793-h,811] 39.2 | B.C. ho 40 <.10 +069 13 2053 20.0 22.7
Do. do. age as, | h,88ieh,887| L7sk| Bac. <32 <5 <.10 2035 6 2058 47.5 15.9
Springdale, So, do, do, L,870-4,875} hO.b | BG, 37 35 <.10 2061 al 2055 27.0 25.4
Tow Creek Routt Mancos sh. | 2,7L0-3,030] 3h.6] BG. 6 20 0.20 0.089 1.2 0.07h 762 20.6 25.7
Walker Logan ngn ss. | 1,927-,932| 38.8] B.G. ho 55 +13 2076 1b 05k, 909 22,5 25.1
Wellington Larimer Muddy ss. | b,00 33.2] BG. 46 <5 225 7 2.1 056 an 20.2 26.2
Wildcat, Morgan Shale above Muddy 5,750=5,792 33.2 | B.G, 77 226 2104, 2.2 2050 64 15.8 22,3
Willard Logan np" ss. | 5,090-5,10i | 38.1] G.B1k. 45 <.10 20! 2.5 2032 16h. 1L.7 21,2
Woodrow, E, Washington do. L,778=b, 782 31.5] G.Blk, 76 75 218 102 3.1 2033 Ls 12.6 23.8 17.8
Woodrow, So, do. do, U,91b-l,920] 38.0] BG. us 55 210 . 2.3 2026 9.2 17.2 2h.2 16,2
Xenia, W. do. age ss, | i,808-L,811] 13,2] Green 39 60 <.10 036 8 OLS 1L.2 23.1 26.8 13.6
Yenter Logan do, 5,176-5,177| 39.2] B.C. 39 pt <.10 07h 12 2067 n.0 23.8 25.2 15.3
Jurassic period
Gramps Archuleta | “Wortisoee ss. | 1,323-1,357| 31.0 69 65 223 13 043 2.2 13.6 26.3
Tes Moffat do, 3,249-3,365] 31.5 6u <5 39 +02 201k 15 13.0 32.6
Do. do. Sundance ss. | 3,182-3,2h2 | 31.5 6 <5 +63 2037 012 2.0 15.2 32.8
Maudlin Gulch do. Morrison ss. | 6,229 3L.0 LS 25 oh? 022 201k, ul 16.6 35.8
Do. do. Sundance ss. | 6,391~-6,398 | 35.6 <5 oL6 2027 017 6.1 17.8 30.3
Moffat do. Morrison ss. | 4,338 40.2 39 35 22h 2026 2015 8.7 22.5 31.8
Do. do, Sundance ss. | L,56L 36.6 L6 20 35 2013 2005 3.1 19.5 33.1
Oak Creek Routt Morrison ss. | 6,60 38.0 16 ho 223 003 . 18,0 33.3
Wilson Creek Rio Blanco do, 6,66L-6,681 | 48,1 33 25 212 011 018 28.7 26.4
e do. Sundance ss. | 6,551-6,570] 7.2 33 <5 12 2005 2008 28.1 27.
Triassic period
Moffat Moffat ae ss, | 5,273-5,301| 37.2 Ls 50 +30 +013 2.5 2005 L.8 18,1 32.8 20.6
Rangely Rio Blanco do, 5,966~6,110| 38.h 43 35 enn 2018 2.6 2007 73 20.8 28.5 18.2
Permian period
Black Hollow Weld “Tyons ss. | 6,918-8,9L0| 35.8 2 <5 253 035 12 2032 3b 19.3 3h.5 21,2
Pennyslvanian period
Dove Creek Montezuma ade fox dol, | 6,110-6,202 | 3.8 36 25 <.10 2010 22 2050 9.8 2b.5 32.9 16.9
Do, do, do, 5,900-5,978 | 63. <32 <5 <.10 2000 20 - 37.9 4243 16,3 1b
Dow do. Paradox 1s. | 6,132-6,150} 18,5 34 30 <.10 2003 al 030 369 47.5 22.7 13.1
Elk Springs Moffat. Weber 38. | 6,090-6,380 | 30,0 59 <5 1.36 12 5.6 2021 Tol 17.2 23h 18.0
Rangely Rio Blanco do, 5,752~6,355 | 35.0 us <5 272 2OhO 2.7 2015 6h 18,3 29.7 19.2

ive formations are designated as follows: Sendstore, ss.; shale, sh.;

imestone, Is.; dolomite, dol,

PY Types of product
/ Colors of crude oils in this table are designated as follows: Brownish-green, B,G,; brownish-black, B,Blk,; greenish-black, G,Blk,; dark green, D.G.; N.P,A, mumbers.
‘B/ Carbon residue values were determined by the Conradson method, A,S.T.M, Designation D189-L6,



REPORT OF CRUDE PETROLEUM ANALYSIS

v Laboratory

REPORT OF CRUDE PETROLEUM ANALYSIS

Laboratory

Bureau of Mines Jaren
Poslinlid

‘Sample —

IDENTIFICATION

Me te aU pase. Us.
T.1S., Re 5S We

GENERAL CHARACTERISTICS
Specific gravity, 0.81. A. P. I. gravity ..36.8..° Pour point, ° F. .... a
Sulfur, percent, .0.12. Color, .. ereendah black.
Saybolt Universal viscosity at 100° F,, $1... sec.;at 77.° F., 100... see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

STAGE 1—Distillation at atmospheric pressure, ..760.. mm. Hg.
i °C. (77... F)

Ps
Pa ecg toot TB w OO OF
1 ue

2% 11

3 10 ae

45 ast

5 10 aoe

6 oon

7 20 aoe

8 maT

9 20 ase

10 m8 at
‘Stade 2—Distillation continued at 40 mm. Hg.

nm. ch ae)
om aT Bieb U.
18 250 482 Sa. 8266. .....52.
res 92.0. 68
1530s “9762.. 305.
Raidum “32: too.dark
‘Carbon residue of residuum, ..648 percent; carbon residue of crude, 2<5 percent.
APPROXIMATE SUMMARY

Light gasoline.

County

A Xe
T. 2N., Re 102 We
GENERAL CHARACTERISTICS

Specific gravity, 0,828. A.P. I. gravity 39¢4_° Pour point, ° F. 5.
Sulfur, percent, 210 Color, .
Saybolt Universal viscosity at 200° F., 40. sec.;at ....° F., sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Srace 1-Disilaton at atmospheric pr pressure, .760.. mm. Hg.
First drop, —47..°.C, (42

Sieh he

Be ie * 8

ee.

‘Carbon residue of residuum, ‘hed. erent ‘arbon residue of erude, Dad. percent.

APPROXIMATE SUMMARY

Light gasoline...

“Total gusoline and naphtha.

‘Total gasoline and naphtha
Kerosine distillate...
Gas oll tie
Nonviscous lubricating distillate
Medium lubricating distillate
‘ioe ting diate
Residoum .

Dit

1s


REPORT OF CRUDE PETROLEUM ANALYSIS

_—— Laboratory

HE 1/s Wi 1/4 se
TOW, Be 59 We
GENERAL CHARACTERISTICS

Specific gravity, 0.859 A. P.I. gravity.33.2_° Pour point, °F. 69 __ —
Sulfur, pereent, 0.26 —__ Color, hxownieh green
Saybolt Universal Viscosity at 100° F., 77. sec.; at 77.° F., .220.. sec.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

STAGE 1—Distillation at at eric pressure, . 760. mm. Hg.
First drop, 28°C. (2° F.)

ah, CME oe REO
Le

un 200
cred

280

rae

15 300 é 60 § _
Residuum . . 31.6. 98.5. 3.

Carbon residue of residaum, 5+2_ percent; carbon residue of erude, . 2+. percent

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Lan _ Laboratory
Sample .

IDENTIFICATION

GENERAL CHARACTERISTICS

Specific gravity, 0...883...._A.P. I. gravity 38a4_.° Pour point, ° F. ...
Sulfur, percent, below 0.10 Col
‘Saybolt Universal viscosity at 100.° F.,..44._ sec.; at

oF, see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospherie pressure, ..760.. mm. Hg.
First drop, 24..° C. (75.9 F.)

a es on
awe Beh Sek. 9 850. 86.2

%

100
125
130
195
200
225
250
25

Seosanmeun d

nu 200
2 Bs
13250
reed
15 300

Residoum

Ar Vecouty
1

“Total gasoline and naphtha 65.9.
Keronine distillate . Taz
¥ Gaol... 35.2.
342072961 50.100 Nonviscous lubricat bee eee B3.6-29,7 50-100
Medium lubricating distillate . 290222666 100.200 Medium lubricating distillate... 2947-2849 100-200

Viscous lubricating distillate . Above 200

Viscous lubricating distillate...
Distillation loan

Above 200

is


ll

Nitrogen values listed in table 2 were determined as an additional property in
the routine analysis study. They were determined by a modified Kjeldahl method de-
scribed in a previous paper .14/ The higher nitrogen values generally correspond to
higher carbon residue, Nitrogen-carbon residue ratios (table 2) illustrate the cor-
relation between the two values. The ratio appears to have some geological signifi-
cance, The highest value observed is 0.120 for one of the Tertiary oil samples from
Powder Wash. The ratios for the other 3 Tertiary oils are much lower; however, the
4 values reported are not enough to establish a trend, Ratios for two of the Creta-
ceous oils are 0.019, much lower than the other Cretaceous values reported. One of
these represents the Armstrong black oil and is another indication that this oil is
out of place among Cretaceous oils. Other Cretaceous oils have nitrogen-carbon
residue ratios consistently higher than those for oils from Jurassic, Triassic,
Permian, and Pennsylvanian formations.

CORRELATION-INDEX CLASSIFICATION

The correlation index (c.1.)45/ furnishes information concerning the structure
of hydrocarbons in crude oils. Although the C. I. values are not quantitative, they
are useful for comparison. The lower the C. I. values of crude-oil fractions the
greater are the concentrations of paraffin hydrocarbons in the fractions; and the
greater the C. I. values, the greater are the concentrations of either naphthenic
or aromatic hydrocarbons or both. Straight-chain paraffins have a C. I. value of 0,
while benzene has a C. I. value of 100. C. I. curves are formed by plotting C. I.
values of fractions against analysis fraction numbers, Individual curves cannot
be followed, if many similar curves are plotted on a single chart. Therefore, it
is convenient to show them as a band indicating the general shape, slope, and posi-
tion of all curves involved.

Figures 4 and 5 show curves and bands of curves for Colorado oils from forma-
tions of each of the six productive time periods. They divide the oils geologically
into two general classes with respect to the shape and slope of curves. Nearly all
oils from Tertiary and Cretaceous formations belong to one group while nearly all
oils from older formations belong to a second group. Curves of the first group ex-
hibit a steep slope at the beginning in the gasoline boiling range (analysis frac-
tions 1 to 7, inclusive) with a tendency to level off in the following boiling
ranges. Oils from older formations exhibit curves with more constant slope. Being
high on the C. I. scale in the gasoline range, curves of the first group reflect an
aromatic tendency for gasoline represented in this group. Curves of the second
group, occurring lower on the scale in the gasoline range, represent more paraffinic
concentration in the gasoline. Curves for oils from formations older than Creta-
ceous indicate that oils of this group are slightly more naphthenic than those of
the first group, in the lubricating-oil boiling range (analysis fractions 13 to 15).
This tendency is shown by slightly higher values on the scale in that range. The
curve for Armstrong black oil (curve 2 among the Cretaceous group, fig. 4) cuts
across most of the other Cretaceous curves. This curve is further evidence that
the oil is not a Cretaceous oil. The shape and slope of its curve resemble those
of the oils from older formations. Curves for the Dove Creek condensates differ
from those of the second group with respect to shape and slope and resemble those
from younger formations.

14/ Ball, John S., Whisman, M. L., and Wenger, W. J., Nitrogen Content of Crude
Petroleums; Ind. Eng. Chem., vol. 43, No. 11, November 1951, pp. 2577-2851.

15/ Smith, Harold M., Correlation Index to Aid in Interpreting Crude Oil Analyses,
Bureau of Mines Technical Paper 610, 1940, 34 pp.


CHARACTERISTICS AND ANALYSES
OF NINETY-TWO COLORADO CRUDE OILS

By W. J. WENGER, M. L. WHISMAN,
W. J. LANUM, AND J, S. BALL

« «© «© «© « « « « « Report of Investigations 5309

UNITED STATES DEPARTMENT OF THE INTERIOR
Fred A. Seaton, Secretary
BUREAU OF MINES
Marling J. Ankeny, Director

Work on manuscript completed June 1956. The Bureau of Mines will welcome reprinting of this paper, provided
the following footnote acknowledgment is made: ‘Reprinted from Bureau of Mines Reportof Investigations5309.”

The work upon which this report is based was done under a cooperative agreement between the Bureau of Mines,
United States Department of the Interior, and the University of Wyoming.

February 1957


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .. Laramie...
Sample ......36L.5....
IDENTIFICATION

Hartel. _— ield
‘Apache Creek sandstone &

160 foot,

je of Plerre shale)

GENERAL CHARACTERISTICS

Specific gravity, 0...85U....
Sulfur, percent, ...0,12-.

A.P.Legravity 3la2_.° Pour point, °F
Col

.. Laboratory

Saybolt Universal viscosity at 100° F., ..uL..see.;at ....° Fy see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘SrAce 1— Distillation at atmospheric pressure, ..588.. mm. Hg.
F)

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines ...

‘Sample PO-N9-251

IDENTIFICATION

GENERAL CHARACTERISTICS

Laboratory

swipe
Tiet

Specific gravity, 0...622... A.P.I. gravity M0s6..° Pour point, ° F. ....60.
Sulfur, percent, 0.12......... Color, ...rawndah=ereen.
Saybolt Universal viscosity at 100° F.,.... 36. sec.jat .....° Fy sec,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘StacE 1—Distillation

atmospheric pressure, .. 760. mm. Hg.
oR)

First drop, 2° ©. (.208.° First drop, -32...° C. (
Frggton OU ereemt St & “at on es Yeggtion Ota earcemt St "ahh on

2 eB. a ee 1 60 red. LD. 669 o

2% wr S. 8) Mo 6708 2% 161 249 146 Bey ab

8 10 az 69. 902. 752. $BoI.. 33. 8 100 ae ...840. 1246. +8 22
eee 0 00 ec 415 257 99. 2a 58.2 25

5 0 oe Soh 206 TS 28 5 aso ae Dad 002 fel aE

Ce ae fe eC > 6 es BB ST. [aes

7 200 392. BaP. 3206. B10... 302. 32. 7 200 992 ab. 16. hee 39

8 5 aT 643. 3B. 830. 3940. 36, 8 saat 3. 4569. 43.0 29

9 250 482 709... 4608 846. 35.8. 38. 9 250 482. Sad. 51.2. WO. 30

30 5 827 10,1. 569 856... 3308 39. 10 as sev «Bal 5168 36.4 30.
‘Stace 2—Distillation continued at 40 mm. Hg. Stace 2—Distillation continued at 40 mm. Hg.

a1 20092 3. $802.0. BMD... Fe. 1 20 s02 a? 31:0

2 meas 70 6542 BB 3082 HO 4g. 30. ms aot 62 36,6"
38250482508 71.0. BBT 2B. LS. 63. Ls. 13 250 ae 346 3H.2

Meme amt eden BBL. RIBS BB AS. a) ams ser BAS 33.8

18 90 ste. 6.5. ga 23.8 kB 190, ‘Bs. 1s 900 sz 12.9. 24.5.
Residue aa gets, Sig SED Residoum Me AT
Carbon residue of reaidoum, lia. percent; carbon residue oferude, a0) percent. Carbon residue of residuum, 1650. percent; earbon residue of erude 0

APPROXIMATE SUMMARY APPROXIMATE SUMMARY
Pest seer. cm view Pacers —

Light gasoline J... . en yee ee) 8902. Light gasoline... 0, 102
Tea eine ad aha 326 07. $0.6 Total gasoline and naphtha oa.
Kerosne datilate : tile . a Kerosne ditillte BB.
Gasol... a Sol) Tepe B50. 35.0 Gaol... uo...
Nonviscus lubricating diatilate bit B7E-.899 30,0-25.9 50-100 Nonviszous lubricating distillate 855-950
Medium lubricating distillate... : : S32 -A99mc913 2529—238 100-200 Medium lubricating distillate « :
Vion reine diate Dos ts ai Be gh3eu89 232205 above 200 Vises Ibreting dita
Residuim Lit Tone. 3B... Residvum

Distillation toes.

Distillation lous -

ze


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
‘Sample

amie... Laboratory

IDENTIFICATION

3]9 feet.
GENERAL CHARACTERISTICS

Specific gravity, 0.825, AP. I. gravity ..W0e0..° Pour point, °F. .....
Sulfur, percent, below. 0410 Color,
see.

srownish-green
‘Saybolt Universal viscosity at100.°F., NO. sec.;at °F,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, . 760 mm. Hg.
First drop, 25.°C. (TL)

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines 14 Laboratory
Sample PC~Sli-2l.
IDENTIFICATION
field Colorado _—
Washington. . County

1,988. 5,022 feet. CMW). sec,..16,.
7. 3S., Re 56 Wy

GENERAL CHARACTERISTICS

Specific gravity, 0.8L... A.P.I. gravity 12.3...° Pour point, ° F. 30... a
Sulfur, percent, .0.10. Color, bromish -grean.
Saybolt Universal viscosity at 100° F.,..36...sec.;at ....° F., see.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stage 1— Distillation a atmospheric pressure, .760. mm. Hg.
First drop, ..25..°C. (..27.° F.)

Frggtion OHH eoemt em, Sy. BS. = gh ae Perot Bats, Sta Be en Wee Hye =
2 ane del de? 0.642 a nd AT 0.6L 88.2
2% tet el $63 2 7% a Ath. 8682 8319.13 -
310 ae bed 10r 8 10 eSB. OL. Wk. 12 Sth.
4125 257 09. 23 40s oT DL Pha 733. 61.5... 18. 55.3.
5 150 902 a0 th 5 30 2 SB 268 751 56.9. 19 55th.
6 15 sar 800... 169... 6 4m 7. 500318768. 52.2. 21, 58.5...
7 200 392 Bad. 8 7 200 992 WL 3549 787. MBB... 2B. 57.6.
8 25 war B08. 198 8s ast WO 796. 6.3... 22. 62.0.
9 250 482. Sek. 4520 813 9 250 482 LB 15.2 811. 13.0. 2h. 96.2.
ro mts sar Ga. Ba. B27. ro 2 sar 606. S18 BAL 40.2. 25. 10.2...
‘STAGE 2—Distillation continued at 40 mm. Hg. ‘STAGE 2—Distillation continued at 40 mm. Hg.
a 200902. dad. rae 0 Shih. 39. a 00 ee 29S? 0 BL. 36.h 30. 76.9. rT) 20.
x2 ast eh "6203 BUD Ws om wT G6. OL BLE 35.b 29. 82.0. LS. ho.
13250482 B08 a 88 1325042 M6 654986. 32.8. 132 B65 56. 60
1425 gat Bal 87 7 1am ower? 7006 BT. 30.k 35, 90.8. 16 80.
15 30052 Oa 885 210 15 30052. 7646 BBA. 28.6. 37, 28.0... 220 95.
Residuum oe ~ 931 Residuum 20d. 2647, 938. Wah. 106.0.
Carbon residue of residuum, percent; carbon residue of crude, 69. percent. Carbon residue of residuum, ..lia9 percent; carbon residue of erude, Led. percent.
APPROXIMATE SUMMARY APPROXIMATE SUMMARY
$0.00 tA vase Poet se. SA Vinay
Light gasoline. a 685, Ber Light gasoline a eee oD 06M men
Total gasoline and Taphthe 0 Os ‘Total gasoline and faphthe -_ (3549. 0.723... ‘bh.2.
Kerosine distillate - mee Keroeine ditiliate pees CCT 12:8
Gas ot “Bla ‘36s? Gasol. : ALB Bu 35.6.
Nonvieoous lubricating distiate «85674882 3348-2849 so-100 _Nonviscou lubricating distiliate fle 1026. -BSli-8B0 312529.3 50-200
Medium lubricating distilate . |. 286220891." 28922703. 100-200 Medium lubricating distillate Ll. Sch. -B80=.890 293-2725 100-200
Viscous lubricating distillate : Above 200 Viscous Iubrieating distillate Above 200

Residoum ‘sat. 9.8
Distilation oes

938. ao isch.

Residuum
Distillation loes

oz




REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
‘Sample

GENERAL CHARACTERISTICS
- A.P.L gravity 402° Pour point, ° F. ..3

Specific gravity, 0. a

SW.

Color, .eFeente

oF, sec.

Sulfur, percent, 022M
Saybolt Universal viscosity at 200.° F.,

39. sec.; at

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘SrAGE 1—Distillation at atmospheric pressure, 7... mm. Hg.

First drop, -26....°C. (...79..° F.)
ad Percent pea Cc Cs on
a ee a a 89.6.
2% 167 245. a6... 68T. 80.6
3 ome aR BT 03 68.
45 st SAT Ua reg 626
5 10 ot SB OO. 51.2
6 1 aT SAD. 26d. 760. 9243. 2.
er ee ee ee) eo 49,5. 2h.
eee ee ne AG. 22
9 290 482 645. 3.6820 aR BB
a en a oo aS a
‘SAGE 2—Distillation continued at 40 mm. Hg.
20092 Mae. 0. BL 3608.
320 m5 ast TAT. 6. 35.8
13250482... 643. 5. 3,9.
2 BAT... Ba. B47.
1 300572 a6. BT Ear
Rasidvum . 8. i, eK

Carbon residue of residuum, 70. percent; earbon residue of erude, de percent.

APPROXIMATE SUMMARY

v

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
‘Sample

Tarente..
BO=8g 258.
IDENTIFICATION

GENERAL CHARACTERISTICS

Specific gravity, 0.842... A. P. I. gravity .36.6....°
Sulfur, pereent, 0435...

Saybolt Universal viscosity at 100.° F., ..6.... sec.; at

Pour point, ° F. 20.
Color

P Pay on Bee

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1. Distillation at atmospheric pressure, 760 mm. Hg.
BOC. (220.9 F)

First drop,
ee a a3
1 0 i onc
2% 167 dO. 81.9 a 588”
3 100 me Bah Ban gh Gur.
415 ast ad, 6369. 32
5 160 902 BAS... 5B. AT. S307.
6 15 347 308 53.2. 20 Seo :
7 200 392 542 ie a 634i
8 25 a7 Oak 5h ak 8,0.
9 250 482 Zed, 6 85 72.8.
10m ser 86 39,8. 26 76.8.
‘STAGE 2—Distillation continued at 40 mm. Hg.
200 ame An 36,6... 30 A.
32-295 aT 946. 35.8. 28 Ss
1250 as 75, 3.2 28 ae
uo ser 66 BLT 3h “3.
1 30 B72 it a5 32, 2.
Residvom 36,

Carbon residue of residoum, ‘948, percent; carbon residue of erude, 205. percent.

APPROXIMATE SUMMARY

Poca Viet Percent
Light gasoline. . BT. Light gasoline egdel
“Total gasoline and naphtha Se Total gusline and naphtha 8
Krone ditilate Kerosineditilate 43.2
Gas oil. : 20.3
[Nonviecou lubricating dat 50-100 15.

Medias lubricating ietillate 100-200 6b
ous brag diate ‘Above 200 wong
‘Residuum . 22.8.

Distillation

Distillation 1088 eee


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines .....Laramia........... Laboratory
Sample .....P0rShbe 227 nnnee
IDENTIFICATION
Cary_____... field felarade..
at."D*. sandstone... .
5,100.-5,106 feet... = zl SE. ub SEL. i
T. 1 Ney Re 56 We

GENERAL CHARACTERISTICS

Specific gravity, 083k... A. P. I. gravity.38.2_..° Pour point, ° F. 50. —
Sulfur, percent, 0.12. Color, bromishaereen.
Saybolt Universal viscosity at 100.° F., 2. 900.5 at ooo? Foye 860.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, 760... mm. Hg.
First drop, 26°C. (_.79_° F.)
PES ety reo aaa, Es
so ae Dal, 0613...
% it 2S. $51.
1000 212 Sal. Toh.
25 aT 6.0 nr
ao 902 dB 257.
6 1m sat MS. THh...
T 200 392 4.0. 787...
8a aT dh 800.
9 2 ase 5.0 8s.
0 ae set OA2 825.
‘Stace 2—Distillation continued at 40 mm. Hg.
a1 200908 ohh. MA oft. ho
12mm aT BS BB 4s
3 30 asz LB Bh

S13. oe

Mom et 5 OZ 870.

1s 200 ort 603. 6945. 8B2
Residvom BTR 96.7 936."
Carbon residue of residuum, Sad percent; casbon residue of crude, La. percent.

APPROXIMATE SUMMARY

Light gasoline... . . oe 900
‘Total gasoline and naphtha. vee
Rerocine distillate .

Gaol... .

Nonvisous lubricating ditlate | | ss ss
‘Medium lubricating distillate...
Viscous Wbrieating ditilate « . . . ..

County

Specific gravity, 0... 851___
Sulfur, pereent,
Saybolt Universal

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines
Sample

Laboratory

IDENTIFICATION
field gelorade —_—
~ County

MAA SE i/4.a00.. 30,
wo an
GENERAL CHARACTERISTICS
A.P.L. gravity ..3428..° Pour point, ° F.
Calon browalabceraan.
88... sec.

100° F,, 82. sec.jat .77..° F,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

Stags 1_Diaillation at atmoasheric pressure. 780, mm. Hg.
C.¢ F)

Carbon residue of residuum,

vee SRR FH on ca AF.
0
O48.) ~ a
18.) m2. ‘50.8
4.0 Loe 38.5...
6.8 721 32.8
943. 789. 39.2
12.5 795, 49.7...
126.8. 801. 61.2.
2303 al. a8.
33,0 2h... Tad,
0.838. BBQ AD BOL.
836, ae ae
886 Mes 81. 60.
65,8 860. 98.8. 67. 80.
aed 871, 201.0... 106. 28.
99, 982... too dark

+3. percent; carbon residue of crude, .0«9.. percent.

APPROXIMATE SUMMARY

Peet sar Vit

Light galing ee vee Be 2

‘Total gaoline and Spite “52.5.

Kerosine distillate 42.5.

Guo... foe 3204.

Nonviacous lubricating dstiliate : : 35-2031. 50-100

Medium lubricating distiate tracert. $171028°3 wa

Viseous lubricating ditillate ne ‘Above 200
See 92 20.8

az


REPORT OF CRUDE PETROLEUM ANALYSIS REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines - Laboratory Bureau of Mines —_

wT —laranie__. Laboratory
Sample vn ‘Sample .. Pa=52-179.
IDENTIFICATION IDENTIFICATION

Colorado.
logan.

GENERAL CHARACTERISTICS GENERAL CHARACTERISTICS

829 in ABE gravity 39.2 _° Pour point, ° F. FS Specific gravity, 0. B28__

Sulfur, percent

AB. gravity 38h? Pour point, °F

—-leas. than 0
Saybolt Universal viseosity af 100.° FB. s€0.38¢ ou? Py Saybolt Universal viscosity at 00°F, 2 seesat a? Fe
DISTILLATION, BUREAU OF MINES ROUTINE METHOD DISTILLATION, BUREAU OF MINES ROUTINE METHOD
‘StAGE 1—Distillation at atmospheric pressure, . 760.. mm. Hg. Sraca1-Distiaton at atoeperi resure, 760... mm. He.
First drop, -26...°C, (....29.° F.) First drop, 32° )

Resdem
Carbon residue of residuum, liaQ. percent; carbon residue of erude, La... percent

APPROXIMATE SUMMARY

Light gasoline...
“Total gasoline and naphtha
Kerosine distilate 2. ss
Gaol ee

le


REPORT OF CRUDE PETROLEUM ANALYSIS REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines —Laramie_.

Sample... PC=li9n72.
IDENTIFICATION
Chroma... field
Greenhorn. limestone...
~héd=170_feat.
GENERAL CHARACTERISTICS GENERAL CHARACTERISTICS
Specific gravity, 0.....868... A. P.I.gravity..31,5.° Pour point, ° F. ...-bO 7 ifie gravity, 0.833. A. P.I.gravity.382h_.° Pour Point, °F
Sulfur, percent, or, .. reenishabrom.—— Sulfur, percent,
Saybolt Universal viscosity at 100 F., ..85.... sec.; at .27..° F., 15. sec. Saybolt Universal viscosity at 200° F, NO. see. at 9 Fey cane 800.
DISTILLATION, BUREAU OF MINES ROUTINE METHOD DISTILLATION, BUREAU OF MINES ROUTINE METHOD
‘STAGE 1—Distillation at atmospheric pressure, ...760. mm. Hg. Stace 1-Distlaton at atmosqperi pressre, 160 mm. Hg.
First drop, —50...°C. (..122.° F.) First cK)

Py reg ret BBE ok -

1 0 im

20% wT... vo

8 100 22.067... O67)

4 15 7 ....49. 16)

5 0 902 De, ~-20...

6 we Lh dD. 21.

T2000 392 2.0. BAL. 20...

8 mS 47 30. xt 1p...

9 0 a2 2 a3, B.

10 275 oe 647... 20,0. ar.
‘Stace 2—Distillation continued at 40 mm. Hg.

1 200 892 6B 2608. 0.823 Nek. 24.

325497 106B.. 3706. BID... 3900... 20.

13250 482 9B ha BUR 363

od

15 300 S72 hind, on BBWS.
pain 389" into, ao “19.6

9
Carton residue of residuum, -643. percent; carbon reside of crude, .2alt percent

APPROXIMATE SUMMARY APPROXIMATE SUMMARY

Pesent

10.6

Medi ibviatng dilate
‘Viscous lubricating distillate
Residuum .



TABLE 1. - Colorado's 10 largest producing oil fields in October 1955

Production rate,

barrels of oil
per dayl/
Rangely . 2762,411
Adena .o. 16,722
Wilson Creek 2/ 7,234
CLLE£E woeeee 6,156
Little Beaver . 4,090
Graylin, N. W.3/ . 3,309
Bobcat .ovcc 3,051
Plum Bush Creek 2,698
Black Hollow 2,485
Yenter .cscce 2,335

i/ All figures except for Rangely and Wilson Creek are production on
October 1, 1955. Rocky Mountain Oil Reporter, Colorado's New-
est Oil Fields Jump Production 18,150 BOPD: Vol. 12, No. ll,
November 1955, p. 20.

2/ Approximate. These figures were derived from annual production
figures for 1954.

3/ analytical data not included in this report.

Black Hollow field in the Julesburg Basin produces from the Permian Lyons
sandstone. Showings of oil in the Lyons sandstone have been reported from three
other fields in the area, Until discovery of Black Hollow, the Julesburg Basin
fields had produced exclusively from Cretaceous formations.

Rangely, Elk Springs, and Dove Creek represent production from Pennsylvanian
formations. Between 1946 and 1951 most of Colorado's oil production was from a
Pennsylvanian formation. Since 1951 production from Cretaceous formations also
has been important.

Some confusion exists as to the nomenclature of Cretaceous formations in the
Julesburg Basin and mostly concerns an expanded Muddy sandstone section and the
Dakota sandstone. Some geologists have considered the Dakota as divided into three
zones separated by shale members. These zones have been designated variously as
first, second, and third Dakota; first, second, and third bench of the Dakota; and
"p", "G", and "J" sands, They have also been considered as belonging to an expanded
Muddy sandstone section or as being members of the Graneros formation. Muddy "D",
Dakota "D", and Dakota first bench, as used on analysis reports, all refer to the
same sandstone. Names of zones or formations on the analysis reports for Julesburg
Basin oils are those used by the operators at the time the samples were obtained.

GENERAL CHARACTERISTICS OF CRUDE OLLS

Most of the oils from all formations have gravities ranging from 30 to 43° API,
while a few fields produce oils or condensates with gravities between 50° and 70°.
Oil of less than 30° gravity is exceptional. A large proportion of the viscosity at
100° F. is within the narrow range of 32 to 50 Saybolt Universal seconds (table 2).
Many of the oils are waxy, and those from Tertiary and Cretaceous formations are
often extremely waxy. Waxy oils also occur in the older formations, although the
oil representing the largest single source of production at Rangely is not unusually
waxy. Pour points, which usually indicate relative wax contents, range from below 5°
to 75° F. (table 2). However, in one instance the high pour point does not reflect
waxiness (Armstrong-field oil from "0" sandstone, table 2). This value of 40° F. is
due to extreme viscosity instead of wax.


REPORT OF CRUDE PETROLEUM ANALYSIS

_laranie
le. PO=Sh-234
IDENTIFICATION

Bureau of Mines
‘Samp

m East _
Jat "D" sandstone.
ly 278-4, 782. feet.

‘SEM SW 1A
ws, RSS W

GENERAL CHARACTERISTICS

Specific gravity, 0.868._.
‘Sulfur, percent,
Saybolt Universal viscosity at 00° F., ...76. see.;at —...° F.

A.P. L gravity 315° Pour point, ° F. _.75______. —
Laon, -ereenist-black

DISTILLATION, BUREAU OF MINES ROUTINE METHOD
ic pressure, 760 mm. Hg.

2)
a ad

29
“32.0.
‘STAGE 2—Distillation continued at 40 mm. Hg.

M200 02 DAR. 28.2. 0 838
wos at SAP 8

38250 ase
2m aa
15 80 BT

Residoum

542.
Carbon residue of residuum, Lad. pereent; carbon residue of erude, .. Jab pereent.

APPROXIMATE SUMMARY

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines Laramie.
Sample ...PO=5S:

IDENTIFICATION

GENERAL CHARACTERISTICS

Specific gravity, 0.835... A. P. 1. gravity 38,0 _° Pour point, ° F.
Sulfur, percent, 2410, cane, “irewnlcerenn
Saybolt Universal viscosity at 200.° F., US... 866.5 8 on.° Fey en

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘Stace 1—Distillation at atmospheric pressure, .760... mm. Hg.
First. » 27° C.F)

23
~ Bh
B... 616... B69... 32...
15 900 672... 54L. 66.7. 881. BS.
Residuwm 2... 30s)... 96.8. 90... 19.0.
‘Carbon residue of residuum, Sal. percent; carbon resides of erude,2s3... percent.

APPROXIMATE SUMMARY

Viney APL Vheoney
Light gawoling Light guacline 16.6.
‘Total gasoline and naphtha “Total gasoline and naphtha ~ 61.5.
Kerosine distillate... . Kerosine distillate oh2.6.
Gasofl . Gasol... se 37.0.
Nonviacous ibreating distillate | 3UAU=30.0 50-100 Nonviscous lubricating dist 852~.878 3h.6-29.7 50-100
‘Medium lubricating distillate... “Beato 30.0=29.3 100-200 Medium lubricating distillate -78=-86) 29.7m28,6 100-200
Viscous lubricating distillate - . ‘Above 200 Viscous lubricating disttats cnn Above 200
Reiduum Reviduam ss 19.0.
Distillation ows. 2S Distillation lows...

6s


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines —. _
Sample ee

IDENTIFICATION

tat. ‘County
TSE UL SR Ti eec. 95
Te WW, Re 92 We

GENERAL CHARACTERISTICS

Specific gravity, 0.839 A. P. I. gravity 37«2_° Pour point, ° F.
Sulfur, percent, Color,
Saybolt Universal viscosity at 20 F., WS... sec.; a Fy mene 80

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

So;

Carbon residue of rexdaum, a1. percent; carbon residue of erude, 245. percent

APPROXIMATE SUMMARY

‘Specific gravity, 0.851...
Sulfur, pereent, lena. than0.10
‘Saybolt Universal viscosity at 100° F., 46. see.;at ......° Fy... see.

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines... Laranie
‘Sample .....PO:

IDENTIFICATION

GENERAL CHARACTERISTICS
_ A.P.L gravity 888° Pour point, ° F.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

‘STAGE 1—Distillation at atmospheric pressure, ..760.. mm. Hg.
First drop, 24°C. (_..76..° F.)

161
a2
21

02

a7
ed
ar
a2
ser

‘Carbon residue of residuum, Sai. pereent; carbon residue oferude, Da percent.

Light gasoline.

APPROXIMATE SUMMARY

— ~ County
HEY, 50 1/4. a9c0..30y....
Teo Mey Re

i
& FF

Light gasoline.
‘otal gasoline and naphtha

36.
871 3h408-31.0 50-100
878 3240-297 100-200
: ‘Above 200

Total gasoline and naphtha.
Kerosine distillate « pee

Gas oil -

BEaG-8060 50-100
0.022967 100-200
Above 200

sy


REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines. baramte.
Sample 3.

IDENTIFICATION

.. Laboratory

ak Grek. field
— -sandatone

y _
WV T/A LYS ae. 2s
2.3 Mey Be 86 We

GENERAL CHARACTERISTICS

A.P.L gravity ...3829_° Pour point, ° F, _...¥0. _
Color, .. Wrewad si=bi
MG. sec.jat °F, see.

Specific gravity, 0. 835,
Sulfur, percent, §
‘Saybolt Universal viscosity at 200° F.,

DISTILLATION, BUREAU OF MINES ROUTINE METHOD
Stace 1—Distillaion at atmospheric pressure, 160. mm. Hg.
First drop, -29....°C. (....84..° F.)

61. 82.6
208 i 1:3 5"
8 10 212 ~ Gs a
ies 3. oP Be
5 150 02 5 B
6 5 Bar AAG 55a7. Be
7 20 302 : 5. Bo 28
iE s & & 3 &
oom mF et a ae) “TR
‘STAGE 2—Distillation continued at 40 mm. Hg.

a FaB Mia 0 82 m.
oes ar = = ¥
1320748 asm :
uw 2 Sar - -RBaT. Pe Tt...
1 300 a Ta. TB 320

Residoum ao ee 1365 ;
Carbo residve of rexdaum, 2OAB percents carbon reso of erode, 248. percent.

APPROXIMATE SUMMARY

Parent shoe SARL Vay
Light gasoline... ws Bel. §

Total gasoline and naphtha

Kerosine distillate .

Gas oft -

Be
28N9~.869 75,251.35
ccna a wea

Nonviacous lubricating distillate
Medium lubricating distillate
Viscous lubricating diatillate
Residsum . bee
Distillation lose

REPORT OF CRUDE PETROLEUM ANALYSIS

Bureau of Mines —.
‘Sample

IDENTIFICATION
field

GENERAL CHARACTERISTICS

Specific gravity, 0 ALP. L. gravity © Pour point, °F,
‘Sulfur, percent, Color, 2

Saybolt Universal viscosity at 200° F.,.$9...sec.;at °F, See.

DISTILLATION, BUREAU OF MINES ROUTINE METHOD

a e. . a
tn we . a a a

200
25
9 250
128
‘STAGE 2—Distillation continued at 40 mm. Hg.
200
12 2
13 250
rae
15 300
Residvum .

7 Bee
Carbon residue of residuum, 49. percent; carbon residue of erude, Le. percent,

APPROXIMATE SUMMARY

Pesent

Gaol... ee
‘Nonviacous lubricating distillate

Medium lubricating distillate.
Viscous lubricating distillate
Resdvum
Distillation loss

by


10

Another characteristic common to nearly all Colorado oils is low asphalt con-
tent, which can be estimated from the carbon residue values (table 2). The yield
of 100-penetration asphalt can be predicted by multiplying percentage of carbon
residue by the factor 4.9.10/ Most of the oils from all formations have 0.0 to 3.0
percent carbon residue. The few with greater values represent only minor produc-
tion. Occurrences of highly asphaltic oil are few in Colorado.

Two characteristics of Colorado oils that correlate somewhat with productive
formations are appearance and sulfur content. Nearly all of the oils from Tertiary
and Cretaceous formations are light green, green, or brownish green and contain
roughly 0.1 percent sulfur. Oils from the older Jurassic, Triassic, Permian, and
Pennsylvanian formations are more often darker - usually greenish black to brownish
black. Their sulfur content in some instances is up to 8 times as much as that from
the younger formations. Rangely Weber sandstone oil (Pennsylvanian) contains 0.7 to
0.8 sulfur and therefore is classified as high-sulfur oil (more than 0.50 percent).

Most Colorado oils resemble oils from similar formations in other areas of the
Rocky Mountains,11 12 13/ oils from Tertiary and Cretaceous formations are very
similar, having high gravity, low sulfur content, high pour point, greenish color,
low viscosity, and high straight-run gasoline content. Oils from older formations
have less resemblance to their counterparts in outside areas, In general, they have
higher gasoline content, higher pour point, higher gravity, and lower viscosity. In
some instances, as at Rangely, the high sulfur content is analogous. Fields produc-
ing from the older formations are limited in number and produce widely different
types of oil, making generalized comparison difficult.

Some unusual oils of minor importance occur in both the younger and older
groups of productive formations. One of special interest is from the Cretaceous
"0" sandstone formation at Armstrong field. Showings of this type of oil have been
reported in several other fields in the Julesburg Basin. It is an extremely asphal-
tic, high-sulfur oil closely resembling many oils from Permian, Pennsylvanian, and
Mississippian formations in Wyoming that have been termed "black oils" (defined as
containing 2 or more percent sulfur and 5 or more percent carbon residue, with grav-
ity of 26° API or less). This oil is not only uncommon for Colorado but is espe-
cially unusual in its association with Cretaceous formations. As it does not fit
among Cretaceous oils, it is believed to have had its actual origin in an older
formation. In contrast to this, some very high gravity, low-sulfur, waxy oils occur
in older formations. An example is the oil in the Pennsylvanian Paradox limestone
and dolomite at Dove Creek.

o/ smith, N. A. C., Smith, H. M., and McKinney, C. M., Refining Properties of New
Crudes; Part 1, Significance and Interpretation of Bureau of Mines Routine
Crude Oil Analysis: Petrol. Processing, vol. 5, No. 6, June 1950,
pp. 609-614, .

ll/ Wenger, W. J., and Lanum, W. J., Characteristics of Crude Oils From Big Horn
Basin Fields, Wyoming and Montana: Petrol. Eng., vol. 26, No. 2, February
1954, pp. A52-A60.

12/ Wenger, W. J., and Lanum, W. J., Characteristics of Crude Oils From the Powder
River Basin: Petrol. Eng., vol. 24, No. 10, September 1952, pp. A-60-A-71.

13/ Ball, John S., and Espach, Ralph H., Crude Oils in Wyoming: Petrol. Eng.,
vol. 20, No. 2, November 1948, pp. 229-234.

|