6506/11-3
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General information
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Wellbore history
GeneralThe well 6506/11-3 is located in the Haltenbanken region, north west of the Smørbukk area. The objectives of well 6506/11-3 were: to prove oil in the Lysing, Lange (Cretaceous) and the Rogn (Jurassic) Formation; to test the hydrocarbon potential of the Nise Formation and the Åre Formation; and to penetrate the Upper Triassic and test the reservoir potential in order to prepare for relinquishment.Operations and resultsWell 6506/11-3 was spudded with the semi-submersible installation Ross Rig on 8 July 1992 and drilled to TD at 4350 m in the Middle Jurassic Not Formation. The well was drilled with seawater and hi-vis pills down to 1020 m, with Gypsum/PAC-Polymer mud from 1020 m to 2020 m, with Gypsum/PAC/Thermopol/Ancotemp mud from 2020 m to 3717 m, and with Ancotherm mud from 3717 m to TD. Due to high pressure the well was terminated at a shallower depth than prognosisTop Nise Formation was encountered at 2357 m and proved to be 196 m thick. It was predominantly Clay/Claystone with some thin sandstone layers, mostly in the upper part. The Lysing Formation was tested and produced water with minor amounts of gas. Only 2 m Spekk Formation was encountered and the Rogn Formation was not developed. Sandstones of the Jurassic Garn Formation were water bearing. Shows were recorded in the Lysing and Garn Formation.Post-well geochemical screening of cores showed shales of good potential in the interval 3920 m to 3990 m across the Cenomanian ? Turonian in the Lange Formation. This may possibly be seen as an equivalent to the Blodøks Formation in the North Sea.Ten cores were cut in the well. Core 1 was cut from 3143.5 m to 3170.5 m in the Lysing Formation. Cores 2, 3, and 4 were cut in the interval 3919 m to 3945.6 m in Upper Cenomanian ? Turonian sediments of the Lange Formation. Cores 5, 6, and 7 were cut in the interval 3976 m to 4003 m in Albian to Cenomanian sediments of the Lange Formation. Cores 8, 9, and 10 were cut in the interval 4172 m to 4224 m in the Garn Formation. Two FMT samples were taken: one at 3933.5 m TVD RKB in the Lange Formation and one at 4189.7 m TVD RKB in the Garn Formation. A thin hydrocarbon film was observed on the sample from the Lange Formation. The well was permanently abandoned on 2 October 1992 as a dry well with shows.TestingOne DST in the interval 3122 m to 3142 m in the Lysing Formation was performed. The test flowed 482 Sm3 water and 1817 Sm3 gas per day through a 12.7 mm choke -
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]1030.004350.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom13143.53170.0[m ]23919.03929.7[m ]33930.03943.6[m ]43943.63945.0[m ]53976.03984.4[m ]63986.03993.0[m ]73993.04000.9[m ]84172.04173.7[m ]94174.04202.0[m ]104202.04223.8[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]127.0Cores 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 typeCONDUCTOR30411.036414.00.00LOTINTERM.201012.0221014.01.61LOTINTERM.162005.0202010.01.75LOTINTERM.9 5/83700.012 1/43717.02.10LOTOPEN HOLE4350.08 1/24350.00.00LOT -
Drill stem tests (DST)
Drill stem tests (DST) Test numberFrom depth MD
[m]To depth MD
[m]Choke size
[mm]1.03120314212.7Drill stem tests (DST) Test numberFinal shut-in pressure
[MPa]Final flow pressure
[MPa]Bottom hole pressure
[MPa]Downhole temperature
[°C]1.03.00034.000105Drill stem tests (DST) Test numberOil
[Sm3/day]Gas
[Sm3/day]Oil density
[g/cm3]Gas grav. rel.airGOR
[m3/m3]1.01817 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]DIFL ACL GR SP4504349DIFL ACL GR SP36954063DIFL ACL GR SP41234217DIFL CDL ACL GR SP10091420DIFL DAC GR20043716DIFL ZDL ACL GR SP13501908DIPLOG37024057DIPLOG40244350DLL MLL SL36954019FMT GR30443090FMT GR41744206FMT GR42064323MWD4202020MWD - CDR37824350MWD - CDR CDN20203782SWC21833701SWC41434347VSP19804330ZDENS CN GR36954063ZDENS CN GR41264215 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit3521527194419442049204921392191219123572553312131213202414241674167416941694330 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.57 -
Geochemical information
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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]pdf23.01 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured11861.1217.0WATER BASED16671.3521.0WATER BASED20151.5029.0WATER BASED20161.5035.0WATER BASED20201.5232.0WATER BASED23001.7029.0WATER BASED30241.7029.0WATER BASED31201.7029.0WATER BASED37171.7029.0WATER BASED37981.7025.0WATER BASED39191.7027.0WATER BASED39231.7524.0WATER BASED39371.9231.0WATER BASED39441.7727.0WATER BASED39761.8430.0WATER BASED39871.8428.0WATER BASED40031.8430.0WATER BASED40631.9234.0WATER BASED41001.8834.0WATER BASED41741.8837.0WATER BASED41961.8833.0WATER BASED42021.8835.0WATER BASED42241.8826.0WATER BASED42551.9049.0WATER BASED43101.9027.0WATER BASED43231.9036.0WATER BASED43241.9035.0WATER BASED43501.9333.0WATER BASED -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1940.0[m]DCRRI1960.0[m]DCRRI1970.0[m]DCRRI1990.0[m]DCRRI2000.0[m]DCRRI2030.0[m]DCRRI2040.0[m]DCRRI2050.0[m]DCRRI2060.0[m]DCRRI2183.0[m]SWCSTATO2186.5[m]SWCSTATO2205.0[m]SWCSTATO2740.0[m]DCRRI2770.0[m]DCRRI2800.0[m]DCRRI2830.0[m]DCRRI2860.0[m]DCRRI2890.0[m]DCRRI2920.0[m]DCRRI2950.0[m]DCRRI2980.0[m]DCRRI3010.0[m]DCRRI3040.0[m]DCRRI3056.0[m]SWCSTATO3082.0[m]SWCSTATO3107.0[m]SWCSTATO3120.0[m]DCRRI3126.0[m]SWCSTATO3130.0[m]DCRRI3132.0[m]SWCSTATO3145.1[m]CSTATO3147.6[m]CSTATO3155.4[m]CSTATO3158.5[m]CSTATO3166.7[m]CSTATO3178.0[m]DCRRI3184.0[m]DCRRI3191.0[m]SWCSTATO3219.0[m]DCRRI3234.0[m]DCRRI3246.0[m]DCRRI3260.0[m]DCRRI3300.0[m]DCRRI3310.0[m]DCRRI3330.0[m]DCRRI3350.0[m]SWCSTATO3360.0[m]DCRRI3380.0[m]DCRRI3400.0[m]DCRRI3420.0[m]DCRRI3440.0[m]DCRRI3460.0[m]DCRRI3480.0[m]DCRRI3500.0[m]DCRRI3520.0[m]DCRRI3540.0[m]DCRRI3560.0[m]DCRRI3580.0[m]DCRRI3600.0[m]DCRRI3620.0[m]DCRRI3640.0[m]DCRRI3661.0[m]SWCSTATO3680.0[m]DCRRI3700.0[m]DCRRI3720.0[m]DCRRI3730.0[m]DCRRI3750.0[m]DCRRI3760.0[m]DCRRI3780.0[m]DCRRI3790.0[m]DCRRI3805.0[m]DCRRI3815.0[m]DCRRI3825.0[m]DCRRI3840.0[m]DCRRI3855.0[m]DCRRI3870.0[m]DCRRI3885.0[m]DCRRI3900.0[m]DCRRI3915.0[m]DCRRI3919.6[m]CSTATO3927.6[m]CSTATO3933.5[m]CSTATO3942.8[m]CSTATO3945.4[m]CSTATO3960.0[m]DCRRI3979.1[m]CSTATO3981.4[m]CSTATO3985.3[m]CSTATO4000.8[m]CSTATO4020.0[m]DCRRI4040.0[m]DCRRI4050.0[m]DCRRI4070.0[m]DCRRI4080.0[m]DCRRI4100.0[m]DCRRI4110.0[m]DCRRI4130.0[m]DCRRI4168.5[m]SWCSTATO4171.5[m]SWCSTATO4186.8[m]CSTATO4190.9[m]CSTATO4199.8[m]CSTATO4201.5[m]CSTATO4215.9[m]CSTATO4259.0[m]SWCSTATO4295.5[m]SWCSTATO4296.0[m]SWCSTATO4301.0[m]SWCSTATO4332.0[m]SWCSTATO4344.0[m]DCRRI4344.0[m]SWCSTATO4350.0[m]DCRRI -
Thin sections at the Norwegian Offshore Directorate
Thin sections at the Norwegian Offshore Directorate DepthUnit3144.48[m ]3145.84[m ]3148.68[m ]3149.49[m ]3152.64[m ]3159.16[m ]3423.50[m ]3937.00[m ]3937.25[m ]