30/11-11 A
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General information
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Wellbore history
GeneralWell 30/11-11 A is a geological sidetrack to well 30/11-11 S on the East flank of the Fensal Sub-basin in the North Sea. It was drilled to test the Viti prospect in a fault block separate from and to the east of the 30/11-11 S Madam Felle oil discovery. The primary objective was to test the hydrocarbon potential in the Middle Jurassic Tarbert Formation.Operations and resultsWildcat well 30/11-11 A Viti was kicked off by milling a window inside the 13 3/8" casing in well 30/11-11 S at a depth of 1092 m in the Hordaland Group claystone. The well was drilled to a total depth of 4016 m (3362.8 m TVD) in the Tarbert Formation. No significant problem was encountered in the operations. The well was drilled with XP07 oil-based mud from kick-off to TD.Top Brent Group, Tarbert Formation came in at 3796 m (3168.1 m TVD). All Brent Group reservoirs were water wet. No shows were seen in the well.Due to no discovery, no cores and no fluid samples were taken.The well was permanently abandoned on 7 April 2016 as a dry 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]1120.004016.00 -
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 typeCONDUCTOR30185.036185.00.00LINER9 5/83505.412 1/43508.01.59FITOPEN HOLE4016.04016.00.00 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]AIT PEX HNGS XPT38023975MDT38023975MWD - ARCVIS TELE10834016 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit13513542668968915321634190023732460246025172552271129083037303734043501363736473647365037963796 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured2851.3719.0XP-0711511.3621.0XP-0714521.4827.0XP-0717081.4821.0XP-0724601.4825.0XP-0726391.4923.0XP-0730701.4923.0XP-0734341.5025.0XP-0738151.3519.0XP-0740161.3520.0XP-07 -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory3500.0[m]DCPETROSTR3510.0[m]DCPETROS3520.0[m]DCPETROS3530.0[m]DCPETROS3540.0[m]DCPETROS3550.0[m]DCPETROS3560.0[m]DCPETROS3570.0[m]DCPETROS3578.0[m]DCPETROS3584.0[m]DCPETROS3600.0[m]DCPETROS3603.0[m]DCPETROS3615.0[m]DCPETROS3624.0[m]DCPETROS3633.0[m]DCPETROS3642.0[m]DCPETROS3648.0[m]DCPETROS3657.0[m]DCPETROS3666.0[m]DCPETROS3675.0[m]DCPETROS3684.0[m]DCPETROS3693.0[m]DCPETROS3702.0[m]DCPETROS3711.0[m]DCPETROS3720.0[m]DCPETROS3729.0[m]DCPETROS3738.0[m]DCPETROS3747.0[m]DCPETROS3756.0[m]DCPETROS3765.0[m]DCPETROS3774.0[m]DCPETROS3783.0[m]DCPETROS3792.0[m]DCPETROS3801.0[m]DCPETROS3810.0[m]DCPETROS3819.0[m]DCPETROS3828.0[m]DCPETROS3837.0[m]DCPETROS3846.0[m]DCPETROS3855.0[m]DCPETROS3864.0[m]DCPETROS3873.0[m]DCPETROS3882.0[m]DCPETROS3891.0[m]DCPETROS3900.0[m]DCPETROS3909.0[m]DCPETROS3918.0[m]DCPETROS3927.0[m]DCPETROS3936.0[m]DCPETROS3945.0[m]DCPETROS3954.0[m]DCPETROS3963.0[m]DCPETROS3972.0[m]DCPETROS3981.0[m]DCPETROS3987.0[m]DCPETROS3999.0[m]DCPETROS4008.0[m]DCPETROS4016.0[m]DCPETROS