34/11-3
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General information
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Wellbore history
GeneralAppraisal well 34/11-3 was drilled on the 34/11-1 Kvitebj ørn Discovery in the Northern North Sea. The primary objective was to confirm hydrocarbon reserves in the Brent Group in this discovery. Secondary objective was to test the Early Jurassic Statfjord and Cook Formations. A third objective was to investigate properties of the Lista Formation of the Rogaland Group, which had significant shows in 34/11-1.Operations and resultsWell 34/11-3 was spudded with the semi-submersible installation Deepsea Trym on 1 August 1996 and drilled to TD at 4482 m in the Early Jurassic Statfjord Formation. When drilling 8 1/2" hole at 4032 m a kick situation was experienced. A total of 23.8 days was spent before the operation could be continued. After drilling to TD problems occurred with the BOP connector. A cement plug was set and the well suspended for repairs of the connector. When drilling out the cement plug the well was unintentionally sidetracked at 4009 m. 34/11-3T2 was drilled to final TD at 4230 m (4234 m loggers depth). The well was drilled with bentonite and seawater down to 1115 m, with ANCO-2000 mud from 1115 m to 3985 m, and with ANCO THERM mud from 3985 m to TD (including sidetrack).No shows were observed in cuttings from the Rogaland Group, but in core 1 thin sandstone laminae with weak shows were observed. The top of the Brent Group was penetrated 14.5 m shallower than prognosed, and was proven to be gas/condensate bearing down to 4196.2 m. No GWC was found. No visual shows were observed in the Cook Formation.In the Statfjord Formation, weak shows were seen, and a weak HC odour from the core was noted.All conventional cores were cut in the original hole while all reservoir logging was performed in the sidetrack. Only MWD logs exist from the lower part of the original hole. A total of 101.8 m conventional core was recovered in 12 cores. Core 1 was cut from 2027 m to 2035.6 m in the Lista Formation, cores 2 - 11 were cut in the interval 4040 m to 4183 m in the Brent Group, and core 12 was cut from 4480 m to 4480.3 m at final TD. An FMT segregated fluid sample was taken at 4044.6 m (gas, filtrate, and 0.5 l condensate), and two MDT fluid samples were taken at 4044.5 m, and 4144.7 m. The 1-gallon MDT sample chambers contained only small volumes of mud, filtrate, some solids and hydrocarbons, the 450 cc chambers were sent to PVT lab.The well was permanently abandoned on 16 January 1997 as a gas/condensate appraisal well.TestingNo drill stem test was performed -
Cuttings at the Norwegian Offshore Directorate
Cuttings at the Norwegian Offshore Directorate Cuttings available for sampling?YESCuttings at the Norwegian Offshore Directorate Cutting sample, top depth [m]Cutting samples, bottom depth [m]1120.004481.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom12027.02035.6[m ]24040.04047.4[m ]34048.54050.6[m ]44054.04060.0[m ]54060.54068.3[m ]64071.54072.6[m ]74073.54078.3[m ]84078.54082.1[m ]94082.14085.6[m ]104095.04111.3[m ]114142.04182.5[m ]124480.04480.3[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]101.9Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Core photos
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Casing and leak–off tests
Casing and leak–off tests Casing typeCasing diam.
[inch]Casing depth
[m]Hole diam.
[inch]Hole depth
[m]LOT/FIT mud eqv.
[g/cm3]Formation test typeCONDUCTOR30293.036293.00.00LOTSURF.COND.201089.0261115.01.66LOTINTERM.13 3/83465.017 1/23477.01.98LOTINTERM.9 5/83972.012 1/43985.02.10LOTOPEN HOLE4230.08 1/24230.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]DIPLOG GR CHT39724205DLL MAC CNL ZDL GR SPL10893458DLL MAC ZDL GR34663982DPIL GR CHT39724226DPIL ZDL CNL DSL CHT39724227FMT GR40314036FMT GR40404144FMT QD GR CHT00HDIL MLL MAC DGR CHT37504227MDT GR00MDT GR40374156MDT GR40404186MWD - DPR2931100MWD - DPR39814488MWD - DPR MDP34773981MWD - DPR2 TF411102344MWD - DPR2A TF423443463SWC GR40084209VSP GR15403452VSP GR32854095VSP GR40804224ZDL CNL GR34523452 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit23391298619041904195919642118377139603960401040354035405041404155419741974261430443604471 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf2.78 -
Documents – reported by the production licence (period for duty of secrecy expired)
Documents – reported by the production licence (period for duty of secrecy expired) Document nameDocument formatDocument size [MB]pdf16.38pdf21.02 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured11151.2019.0BENTONITE/FW11751.3924.0KCL/PAC/XANVIS16491.3926.0KCL/PAC/XANVIS17651.3918.0KCL/PAC/XANVIS22171.5321.0KCL/PAC/XANVIS29801.5320.0ANCO 200034771.5528.0ANCO 200034771.5521.0ANCO 200039851.8742.0ANCO 200040221.9842.0ANCOTEMP/BENT.40342.0043.0ANCOTEMP/BENT.40392.0042.0ANCOTEMP/BENT.40402.0045.0ANCOTEMP/BENT.40542.0046.0ANCOTEMP/BENT.40722.0043.0ANCOTEMP/BENT.40792.0035.0ANCOTEMP/BENT.40852.0030.0ANCOTEMP/BENT.42302.0036.0ANCOTEMP/BENT.44822.0039.0ANCOTEMP/BENT. -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1120.0[m]DCGEOSTR1140.0[m]DCGEOSTR1160.0[m]DCGEOSTR1180.0[m]DCGEOSTR1200.0[m]DCGEOSTR1220.0[m]DCGEOSTR1240.0[m]DCGEOSTR1260.0[m]DCGEOSTR1280.0[m]DCGEOSTR1300.0[m]DCGEOSTR1320.0[m]DCGEOSTR1340.0[m]DCGEOSTR1360.0[m]DCGEOSTR1380.0[m]DCGEOSTR1400.0[m]DCGEOSTR1410.0[m]DCGEOSTR1440.0[m]DCGEOSTR1460.0[m]DCGEOSTR1480.0[m]DCGEOSTR1500.0[m]DCGEOSTR1520.0[m]DCGEOSTR1540.0[m]DCGEOSTR1560.0[m]DCGEOSTR1580.0[m]DCGEOSTR1600.0[m]DCGEOSTR1620.0[m]DCGEOSTR1640.0[m]DCGEOSTR1660.0[m]DCGEOSTR1680.0[m]DCGEOSTR1700.0[m]DCGEOSTR1720.0[m]DCGEOSTR1740.0[m]DCGEOSTR1760.0[m]DCGEOSTR1780.0[m]DCGEOSTR1800.0[m]DCGEOSTR1820.0[m]DCGEOSTR1840.0[m]DCGEOSTR1860.0[m]DCGEOSTR1870.0[m]DCGEOSTR1879.0[m]DCGEOSTR1888.0[m]DCGEOSTR1894.0[m]DCGEOSTR1906.0[m]DCGEOSTR1915.0[m]DCGEOSTR1924.0[m]DCGEOSTR1930.0[m]DCGEOSTR1942.0[m]DCGEOSTR1951.0[m]DCGEOSTR1960.0[m]DCGEOSTR1969.0[m]DCGEOSTR1978.0[m]DCGEOSTR1987.0[m]DCGEOSTR1996.0[m]DCGEOSTR2005.0[m]DCGEOSTR2014.0[m]DCGEOSTR2023.0[m]DCGEOSTR2056.0[m]DCGEOSTR2068.0[m]DCGEOSTR2077.0[m]DCGEOSTR2086.0[m]DCGEOSTR2095.0[m]DCGEOSTR2104.0[m]DCGEOSTR2113.0[m]DCGEOSTR2119.0[m]DCGEOSTR2130.0[m]DCGEOSTR2140.0[m]DCGEOSTR2150.0[m]DCGEOSTR2170.0[m]DCGEOSTR2190.0[m]DCGEOSTR2210.0[m]DCGEOSTR2230.0[m]DCGEOSTR2250.0[m]DCGEOSTR2270.0[m]DCGEOSTR2290.0[m]DCGEOSTR2310.0[m]DCGEOSTR2330.0[m]DCGEOSTR2350.0[m]DCGEOSTR2370.0[m]DCGEOSTR2390.0[m]DCGEOSTR2410.0[m]DCGEOSTR2430.0[m]DCGEOSTR2460.0[m]DCGEOSTR2470.0[m]DCGEOSTR2490.0[m]DCGEOSTR2510.0[m]DCGEOSTR2530.0[m]DCGEOSTR2550.0[m]DCGEOSTR2570.0[m]DCGEOSTR2590.0[m]DCGEOSTR2610.0[m]DCGEOSTR2630.0[m]DCGEOSTR2650.0[m]DCGEOSTR2670.0[m]DCGEOSTR2690.0[m]DCGEOSTR2710.0[m]DCGEOSTR2730.0[m]DCGEOSTR2750.0[m]DCGEOSTR2780.0[m]DCGEOSTR2790.0[m]DCGEOSTR2810.0[m]DCGEOSTR2840.0[m]DCGEOSTR2850.0[m]DCGEOSTR2870.0[m]DCGEOSTR2890.0[m]DCGEOSTR2910.0[m]DCGEOSTR2930.0[m]DCGEOSTR2950.0[m]DCGEOSTR2980.0[m]DCGEOSTR2990.0[m]DCGEOSTR3000.0[m]DCGEOSTR3030.0[m]DCGEOSTR3050.0[m]DCGEOSTR3070.0[m]DCGEOSTR3090.0[m]DCGEOSTR3110.0[m]DCGEOSTR3130.0[m]DCGEOSTR3150.0[m]DCGEOSTR3170.0[m]DCGEOSTR3190.0[m]DCGEOSTR3210.0[m]DCGEOSTR3230.0[m]DCGEOSTR3250.0[m]DCGEOSTR3270.0[m]DCGEOSTR3290.0[m]DCGEOSTR3310.0[m]DCGEOSTR3330.0[m]DCGEOSTR3350.0[m]DCGEOSTR3370.0[m]DCGEOSTR3390.0[m]DCGEOSTR3410.0[m]DCGEOSTR3430.0[m]DCGEOSTR3440.0[m]DCGEOSTR3470.0[m]DCGEOSTR3490.0[m]DCGEOSTR3510.0[m]DCGEOSTR3520.0[m]DCGEOSTR3540.0[m]DCGEOSTR3550.0[m]DCGEOSTR3570.0[m]DCGEOSTR3580.0[m]DCGEOSTR3600.0[m]DCGEOSTR3610.0[m]DCGEOSTR3630.0[m]DCGEOSTR3640.0[m]DCGEOSTR3660.0[m]DCGEOSTR3670.0[m]DCGEOSTR3690.0[m]DCGEOSTR3700.0[m]DCGEOSTR3720.0[m]DCGEOSTR3730.0[m]DCGEOSTR3750.0[m]DCGEOSTR3762.0[m]DCGEOSTR3777.0[m]DCGEOSTR3798.0[m]DCGEOSTR3813.0[m]DCGEOSTR3825.0[m]DCGEOSTR3840.0[m]DCGEOSTR3855.0[m]DCGEOSTR3867.0[m]DCGEOSTR3888.0[m]DCGEOSTR3900.0[m]DCGEOSTR3915.0[m]DCGEOSTR3930.0[m]DCGEOSTR3945.0[m]DCGEOSTR3960.0[m]DCGEOSTR3978.0[m]DCGEOSTR3990.0[m]DCGEOSTR4005.0[m]DCGEOSTR4014.0[m]DCGEOSTR4017.0[m]DCGEOSTR4035.0[m]DCGEOSTR4038.0[m]DCGEOSTR4193.0[m]DCGEOSTR4202.0[m]DCGEOSTR4211.0[m]DCGEOSTR4219.0[m]DCGEOSTR4235.0[m]DCGEOSTR4253.0[m]DCGEOSTR4265.0[m]DCGEOSTR4280.0[m]DCGEOSTR4295.0[m]DCGEOSTR4310.0[m]DCGEOSTR4325.0[m]DCGEOSTR4340.0[m]DCGEOSTR4355.0[m]DCGEOSTR4370.0[m]DCGEOSTR4385.0[m]DCGEOSTR4400.0[m]DCGEOSTR4415.0[m]DCGEOSTR4430.0[m]DCGEOSTR4445.0[m]DCGEOSTR4463.0[m]DCGEOSTR4478.0[m]DCGEOSTR -
Thin sections at the Norwegian Offshore Directorate
Thin sections at the Norwegian Offshore Directorate DepthUnit4095.55[m ]4110.80[m ]4147.00[m ]4163.30[m ]4171.40[m ]