Jefferson jimplecute. (Jefferson, Tex.) 1907-1926, 1912-01-19
FULL DETAILS OF
OIL DRILLING RIG

Texas. and Caddo Parish, La,
are nodoubt the greatest in our
country because of it's vast
amount of territory and high
gravity of crude pretolium. Elk
ceptionally few people under
stand the production of this
great industry without possessing
some actual experience, and fail
ures as made by the we'll posted
ones.
l will write you on the, begin
ing of the production of oil from
the time the derrick is placed on
the scene. Well, enough; some
of you are familiar, but to begin.
A derrick when completed
stands 21.7 IL #. square at the
floor, All 1-2 # at the top, $40
from the ground to the floor. and
stands "a fit in height; this con-
sists of IA sills and 5000 fit of
lumber. Drilling machinery is
called drilling rig" In this
field rotating" is done in place
of boring with cable tools, which
| will explain later. a rotary
rig consists of one 40 h.p. boiler,
engine, rotary (hoisting drum,
line shaft and jack post) which is
known as the draw works, d
crown block and two 10x6x12
slush pumps, and of course other
small tools too numerous to men
ton. OF course the people in
your vicinity are familiar with
the above, but as you were un-
fortunate in not securing oil du-
ring the life of drilling near town,
good many of you failed to see
a 'Standard' rig in operation.
drilling a well with rotary tools,
Gin pipe is always used. TO start
drilling two.joints are connected
together pulled through the Y
with a cat line Il IA" manila
rope) running from the cat head
oil Vic me SllilU oNCl Vic SblNC
in the crown block a drill collar
and bits screwed on the ground
through the rotary, a board is
placed on the second girter and
the pipe lined up with a line,
when everything is ready two
strips or nailed on "A" shape to
KEEP it in place, the rotary is then
frightened and then it is ready to
start, this Of course is done to
start a straight hole. Three sizes
of pipe is used for casing, | will
state size and depth generally
placed according to elevation and
formation. 10in from 140 to 3C0
#. Sin from 1000 to 1200ft. Gin
from 2O00 to 220O or more. This
is setin stiff formation, anything
preference to rock but will an
SWer in some cases. Some com
pany cement around the 10in
casing to prevent it from blow
ing out, this requires about 80
sacks cement to 100 sacks sand
according to amOut of casing set,
This makes a good mixture and
will set in SO hours, some allow
ing IS hours to be sure OF good
job. SINGH casing is set below
the shallow gas rock which is
found from 900 to 1000 fit. and
some times shows a strater of
oil. Gin. casing is set below the
sand rock which contains consid-
cradle gas and is found 1900 to
1900 TT: The casing | mention
is all ordinary line pipe, heavier
and better material is used for
drilling. Gin, pipe is used to drill
with until Sin. casing is set and
then the Gin. is pulled in thrib-
bleS and set to one side of der
rick. Ain. pipe then takes the
place of Gin. A string of drill
pipe will complete a we'll but if it
has been used before or the
threads become worn a new
string is put in its place, and if
the well is near enough complet-
ed a string of , lin. is used
This is less costly TO handle anC
especially with teams, which is
an item in this business, and will
answer the purpose all right
providing the driller is attentive
and keeps the weight Of pipe of
the bottom. Bits are made i'm
the shape of "a fish scale Those
generally used, other bits are of
course used such as diamond
point, roller bit aud drag. A
bit guaging Hin at the points is
used 20 make the hole for the
first casing Q IS for the next.
and 6 - for the next. smaller
bits are used 10 drill in with this
depends upon the formation the
Gin. casing is setting in, After
the Gin. casing has been SCI "a
bucket Is placed under the Owe
flow % catch q portion OF the
cuttings, this is examined fire.
quentiy B. terminate the results
when you strike the oil sand.
you do not STOP but keep going
through until 10 becomes danger
Gus Of drilling In tO salt water.
This Is Of course based on the el-
ovation which is always taken.