Daily Drilling Report
Well: NO 15/9-19 B
Report period: 1997-11-23T00:00:00+01:00 to 1997-11-24T00:00:00+01:00
Wellbore info:
dTimSpud: 1997-11-10T00:00:00+01:00
daysBehind: 14.1
operator: Statoil
rigAlias: name: BYFORD DOLPHIN
name: 341331
Status:
dTim: 1997-11-24T00:00:00+01:00
dTimDiaHoleStart: 1997-11-09T22:00:00+01:00
diaHole: 8.5
distDrill: -999.99
elevKelly: 25
fixedRig: false
forecast24Hr: WASH TO BOTTOM AND REDUCE MUD WEIGHT. SQUEEZE LOSS ZONE AT +\- 3035M
WITH CEMENT. RIH WITH DRILLING ASSEMBLY.
hpht: 0
md: 3054
mdCsgLast: 4643
mdDiaHoleStart: 2231
mdKickoff: 2911
mdPlanned: -999.99
presTestType: leak off test
reportNo: 15
ropCurrent: -999.99
strengthForm: 1.73
sum24Hr: RECONNECTED LMRP TO BOP. POOH W/ EMERGENCY DRILL PIPE HANG OFF TOOL.
RIH TO BOTTOM. COULD NOT GAIN FULL CIRCULATION. POOH TO CASING WINDOW.
GAINED FULL CIRCULATION. BEGAN WASHING TO BOTTOM AND REDUCING MW.
tightWell: 0
tvd: 2328
waterDepth: 85
wellheadElevation: 106.5
Drilling fluid:
dTim: 1997-11-23T23:59:00+01:00
density: 1.51
md: 3054
mudClass: other
presBopRating: 999
pv: 42
type: ULTIDRILL
visFunnel: 102
yp: 13
Pore pressure:
dTim: 1997-11-24T00:00:00+01:00
equivalentMudWeight: 1.03
md: 3054
readingKind: estimated
Survey stations:
Activities:
comments: CONTINUED W.O.W. WIND PERSISTED AT 16 M/S. SEAS DECAYED TO 4M, HEAVE TO 1.5M WITH OCCASIONAL PEAKS OF 1.8M. MADE UP DIVERTER HANDLING TOOL AND PREPARED TO RECONNECT LMRP.
dTimEnd: 1997-11-23T06:00:00+01:00
dTimStart: 1997-11-23T00:00:00+01:00
md: 2131
phase: fixed
proprietaryCode: interruption -- waiting on weather
state: fail
stateDetailActivity: success
comments: JUMPED ROV AND POSITIONED RIG TO RECONNECT LMRP. LATCHED LMRP AND PULL TESTED WITH 25T OVERPULL. PRESSURE TESTED CHOKE/KILL LINES TO 35/345 BAR. OPENED CHOKE/KILL LINES AND CHECKED FOR FLOW/PRESSURE.
dTimEnd: 1997-11-23T09:00:00+01:00
dTimStart: 1997-11-23T06:00:00+01:00
md: 2131
phase: fixed
proprietaryCode: interruption -- waiting on weather
state: fail
stateDetailActivity: success
comments: RIH W/ DP RETRIEVAL STRING. DISPLACED RISER TO 1.53 SG MUD AND FLUSHED BOP BETWEEN SHEAR RAMS AMD LOWER PIPE RAMS. OPENED SR AND MADE UP RETRIEVING STRING INTO EDPHOT.
dTimEnd: 1997-11-23T10:00:00+01:00
dTimStart: 1997-11-23T09:00:00+01:00
md: 2131
phase: fixed
proprietaryCode: interruption -- waiting on weather
state: fail
stateDetailActivity: success
comments: CLOSED LOWER ANNULAR PREVENTER AND TESTED EX GASKET IN LMRP CONNECTOR TO 30 BAR. OPENED LPR AND CHECKED PRESSURE - 12 BAR. FLUSHED STACK DOWN KILL LINE AND UP UPPER CHOKE THROUGH POOR BOY DEGASSER - MAX GAS 5.8% STABILIZED AT 4-5%.
dTimEnd: 1997-11-23T13:00:00+01:00
dTimStart: 1997-11-23T10:00:00+01:00
md: 2131
phase: fixed
proprietaryCode: interruption -- waiting on weather
state: fail
stateDetailActivity: success
comments: FLOWCHECKED WELL ON CHOKE LINE. OPENED LAP AND FLOWCHECKED WELL ON RISER.
dTimEnd: 1997-11-23T13:30:00+01:00
dTimStart: 1997-11-23T13:00:00+01:00
md: 2131
phase: fixed
proprietaryCode: interruption -- waiting on weather
state: fail
stateDetailActivity: success
comments: CIRCULATED AND CONDITIONED MUD. POOH TO 2096M. CIRCULATED BOTTOMS UP AT 2000 LPM MAX. MAX GAS 8.8% BOTTOMS UP FROM WELLHEAD. GAS STABILIZED  AT 2%. POOH. BROKE OUT EDPHOT AND REMADE EDPHOT STAND AND RACKED IN DERRICK.
dTimEnd: 1997-11-23T16:00:00+01:00
dTimStart: 1997-11-23T13:30:00+01:00
md: 2025
phase: fixed
proprietaryCode: interruption -- waiting on weather
state: fail
stateDetailActivity: success
comments: M/U CEMENTING STAND AND RIH TO 3054M. BROKE CIRCULATION SEVERAL TIMES WHILE RIH TO BALANCE MUD. NO FILL - NO MUD LOSSES.
dTimEnd: 1997-11-23T18:30:00+01:00
dTimStart: 1997-11-23T16:00:00+01:00
md: 3054
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
comments: BROKE CIRCULATION AT 250 LPM WITH NO LOSSES. INCREASED RATE TO 1000 LPM AND BEGAN LOSING MUD AT 15 M3/HR. REDUCED CIRCULATING RATE TO 500 LPM - LOSSES AT 12 M3/HR. REDUCED CIRCULATING RATE TO 250 LPM - LOSSES AT 9 M3/HR. FLOWCHECKED - HOLE STOOD FULL WITH 30 BAR BACK PRESSURE ON DP. BLED OFF DP PRESSURE AND POOH 1 STAND TO 3025. NO MUD GAINED.
dTimEnd: 1997-11-23T21:30:00+01:00
dTimStart: 1997-11-23T18:30:00+01:00
md: 3054
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
comments: CIRCULATED AT 250 LPM - LOSSES AT 2 M3/HR, AT 400 LPM - LOSSES AT 4 M3/HR, AT 500 LPM - LOSSES AT 13 M3/HR. 91T STRING WEIGHT DOWN, 95T STRING WEIGHT UP. BACK PRESSURE ON DP 18-30 BAR EACH TIME PUMPS SHUT DOWN. MEANWHILE CONTINUED REDUCING MUD WEIGHT FROM 1.53SG TO 1.51SG. HAVE NOW LOST 52.6 M3 MUD. MAX GAS 6%.
dTimEnd: 1997-11-23T22:30:00+01:00
dTimStart: 1997-11-23T21:30:00+01:00
md: 3025
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
comments: SLUGGED PIPE AND BEGAN POOH TO CASING WINDOW. NORMAL DRAG.
dTimEnd: 1997-11-24T00:00:00+01:00
dTimStart: 1997-11-23T22:30:00+01:00
md: 2584
phase: fixed
proprietaryCode: interruption -- lost circulation
state: fail
stateDetailActivity: circulation loss
Lithology and shows: