Daily Drilling Report
Well: NO 15/9-19 B
Report period: 1997-11-14T00:00:00+01:00 to 1997-11-15T00:00:00+01:00
Wellbore info:
dTimSpud: 1997-11-10T00:00:00+01:00
operator: Statoil
rigAlias: name: BYFORD DOLPHIN
name: 341331
Status:
dTim: 1997-11-15T00:00:00+01:00
dTimDiaHoleStart: 1997-11-09T22:00:00+01:00
diaHole: 8.5
distDrill: 222
elevKelly: 25
fixedRig: false
forecast24Hr: CONTINUE POOH. RIH WITH 3 1/2" DP STINGER AND SPOT LCM/CMT PILL. POOH
RIH WITH DRILLING BHA AND CLEAN OUT WELL, CONTINUE DRILLING.
hpht: 0
md: 3039
mdDiaHoleStart: 2231
mdKickoff: 2911
mdPlanned: -999.99
presTestType: leak off test
reportNo: 6
ropCurrent: -999.99
strengthForm: 1.73
sum24Hr: DRILLED FROM 2850 TO 3035M. LOST RETURNS, MIXED AND PUMPED LCM PILL NO
SIGNIFICANT IMPROVEMENT FROM PILL. DRILLED 4 M WITHOUT RETURN BEFORE
SPOTTING LCM PILL. LOST 43 M3 MUD TO FORMATION. FLOW CHECKED POOH TO
SHOE, WELL FLOWED BACK WITH 14,1 M3. ATTEMPTED TO ESTABLISH CIRC. NO
SUCCESS. POOH WITH REDUCED SPEED DUE TO FLOW BACK DURING TRIP.
tightWell: 0
tvd: 2315.8
waterDepth: 85
wellheadElevation: 106.5
Drilling fluid:
dTim: 1997-11-14T06:00:00+01:00
density: 1.55
locationSample: Active pit
md: 2817
mudClass: other
presBopRating: 999
pv: 42
type: ULTIDRILL
visFunnel: 81
yp: 16.5
dTim: 1997-11-14T00:00:00+01:00
density: 1.55
locationSample: Active pit
md: 2817
mudClass: other
presBopRating: 999
pv: 42
type: ULTIDRILL
visFunnel: 81
yp: 16.5
Pore pressure:
dTim: 1997-11-15T00:00:00+01:00
equivalentMudWeight: 1.03
md: 3039
readingKind: estimated
Survey stations:
azi: 165
dTim: 1997-11-15T00:00:00+01:00
incl: 29.7
md: 2838
tvd: 2147.2
azi: 160.4
dTim: 1997-11-15T00:00:00+01:00
incl: 32.3
md: 2868
tvd: 2172.9
azi: 157.4
dTim: 1997-11-15T00:00:00+01:00
incl: 33.6
md: 2897
tvd: 2197.3
azi: 156.7
dTim: 1997-11-15T00:00:00+01:00
incl: 33.5
md: 2926
tvd: 2221.4
azi: 158.2
dTim: 1997-11-15T00:00:00+01:00
incl: 33.4
md: 2984
tvd: 2269.8
azi: 157.4
dTim: 1997-11-15T00:00:00+01:00
incl: 33.5
md: 2955
tvd: 2245.6
Activities:
comments: ORIENTED AND ROTATED FROM 2817M TO 2850M. FREQUENTLY STALLING MOTOR. ROTATING MODE; 40-50 M/HR WITH 1-2T WOB.
dTimEnd: 1997-11-14T06:00:00+01:00
dTimStart: 1997-11-14T00:00:00+01:00
md: 2850
phase: fixed
proprietaryCode: drilling -- drill
state: ok
stateDetailActivity: success
comments: CONTINUED DRILLING AND ORIENTING FROM 2850M TO 3035M - LOST RETURNS.
dTimEnd: 1997-11-14T15:30:00+01:00
dTimStart: 1997-11-14T06:00:00+01:00
md: 3035
phase: fixed
proprietaryCode: drilling -- drill
state: ok
stateDetailActivity: success
comments: FLOW CHECKED, WELL STATIC. ATTEMPTED TO REGAIN CIRCULATION BY STAGING PUMPS, 100 % RETURNS BELOW 400 L/MIN. MIXED LCM PILL.
dTimEnd: 1997-11-14T18:30:00+01:00
dTimStart: 1997-11-14T15:30:00+01:00
md: 3035
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
comments: PUMPED 8 M3 NUT PLUG COARSE, MICA COARSE AND LIGNOCEL (WOOD FIBRE) TOTAL CONCENTRATION, 222,8 KG/M3/1,8 SG. CLEARED SUCTION STRAINERS ON MUD PUMPS PRIOR TO DISPLACING PILL. DURING DISPLACING; DRILLED FROM 3035M TO 3039M NO RETURNS. OBSERVED 17-18 BAR PRESS INCREASE WHEN LCM PASSED BHA. PULLED BACK TO 3030M. STAGED PUMPS TO REGAIN CIRC.
dTimEnd: 1997-11-14T21:30:00+01:00
dTimStart: 1997-11-14T18:30:00+01:00
md: 3039
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
comments: ATTEMPTED TO ESTABLISH CIRC. LOSSES TO FORMATION STARTED ABOVE 400 L/MIN. LOST TOTAL 43 M3 MUD. POOH WET TO 2927M.
dTimEnd: 1997-11-14T22:30:00+01:00
dTimStart: 1997-11-14T21:30:00+01:00
md: 2927
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
comments: FLOW CHECKED, WELL STATIC.
dTimEnd: 1997-11-14T23:00:00+01:00
dTimStart: 1997-11-14T22:30:00+01:00
md: 2927
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
comments: POOH TO 2530M. FLOWED BACK 14 M3, THEN HOLE TOOK NORMAL AMOUNT OF MUD
dTimEnd: 1997-11-15T00:00:00+01:00
dTimStart: 1997-11-14T23:00:00+01:00
md: 2530
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
Lithology and shows:
dTim: 1997-11-15T00:00:00+01:00
lithology: CLAYSTONE WITH SANDSTONE STRINGERS
mdBottom: -999.99
mdTop: 2830
dTim: 1997-11-15T00:00:00+01:00
lithology: CLAYSTONE WITH TRACES OF LIMESTONE
mdBottom: -999.99
mdTop: 2850
dTim: 1997-11-15T00:00:00+01:00
lithology: CLAYSTONE WITH TUFFACEOUS BEDS AND MINOR LIMESTONE
mdBottom: -999.99
mdTop: 2971