6406/12-2
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General information
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Wellbore history
GeneralWell 6406/12-2 is located approximately mid way between the Njord Field and the small 6406/11-1 S oil discovery. The main objective of the well was to prove oil accumulation in Upper Jurassic Sandstones in the Lambda prospect.Operations and resultsExploration well 6406/12-2 was spudded with the semi-submersible installation "Deepsea Bergen" on 1 September 1995 and drilled to a total depth of 4367 m in Middle Jurassic Melke Formation sandstones. The well was drilled with Bentonite / CMC EHV down to 917 m, with "ANCO 2000" mud from 917 m to 2316 m, and with oil based "ANCOVERT" from 2316 m to TD.Drilling performance was good down to 3731 m but very low penetration rate was experienced below this level to TD due to very hard formation.Three cores were cut, one in Spekk Formation (shale), one in Rogn Formation II and one in Melke Formation. One FMT run was performed in the Rogn and Melke sandstone sections. The FMT log was run with sample chambers to collect a sample of the formation fluid if possible. All the pressure points showed tight formation. The well was permanently abandoned on 17 October 1995 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]930.004367.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom13731.03758.4[m ]23797.03823.7[m ]33999.04006.2[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]61.3Cores 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 typeCONDUCTOR30418.036418.00.00LOTSURF.COND.20906.026907.01.65LOTINTERM.9 5/82308.012 1/42308.02.02LOTOPEN HOLE4367.08 1/24367.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]DIFL AC ZDL GR9062309DIPL MAC ZDL CN GR CHT22574370FMT-QD GR CHT37984307HEXDIP GR CHT36504372MWD DPR - TF436603727MWD DPR - TF5A23013312MWD DPR - TF5A37224350MWD RGD4152316SWC23504298VSP6404360 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit35735791411361136191019102001217721772446279629542954371137113790387339073912 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.62 -
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]pdf27.76 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured4221.03SEAWATER/BENT.20001.5525.0ANCO 200023001.5526.0ANCO 200026561.6042.0ANCO VERT32401.7042.0ANCO VERT36721.7046.0ANCO VERT37311.7046.0ANCO VERT37581.70DUMMY37971.7045.0ANCO VERT38971.70DUMMY -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1600.0[m]DCUOS1620.0[m]DCUOS1640.0[m]DCUOS1660.0[m]DCUOS1680.0[m]DCUOS1700.0[m]DCUOS1720.0[m]DCUOS1740.0[m]DCUOS1760.0[m]DCUOS1780.0[m]DCUOS1800.0[m]DCUOS1820.0[m]DCUOS1830.0[m]DCUOS1850.0[m]DCUOS1870.0[m]DCUOS1890.0[m]DCUOS2170.0[m]DCUOS2190.0[m]DCUOS2210.0[m]DCUOS2230.0[m]DCUOS2250.0[m]DCUOS2270.0[m]DCUOS2290.0[m]DCUOS2310.0[m]DCUOS2340.0[m]DCUOS2350.0[m]SWCWESTL2360.0[m]DCUOS2370.0[m]DCUOS2390.0[m]DCUOS2410.0[m]DCUOS2430.0[m]DCUOS2450.0[m]DCUOS2470.0[m]DCUOS2480.0[m]SWCWESTL2490.0[m]DCUOS2510.0[m]DCUOS2530.0[m]DCUOS2550.0[m]DCUOS2570.0[m]DCUOS2580.0[m]DCUOS2600.0[m]DCUOS2620.0[m]DCUOS2640.0[m]DCUOS2660.0[m]DCUOS2680.0[m]DCUOS2690.0[m]DCUOS2710.0[m]DCUOS2730.0[m]DCUOS2750.0[m]DCUOS2770.0[m]DCUOS2790.0[m]DCUOS2810.0[m]DCUOS2830.0[m]DCUOS2850.0[m]DCUOS2870.0[m]DCUOS2890.0[m]DCUOS2910.0[m]DCUOS2930.0[m]DCUOS2950.0[m]DCUOS2970.0[m]DCUOS2990.0[m]DCUOS3010.0[m]DCUOS3030.0[m]DCUOS3050.0[m]DCUOS3070.0[m]DCUOS3090.0[m]DCUOS3110.0[m]DCUOS3140.0[m]DCUOS3160.0[m]DCUOS3180.0[m]DCUOS3200.0[m]DCUOS3220.0[m]DCUOS3240.0[m]DCUOS3260.0[m]DCUOS3280.0[m]DCUOS3300.0[m]SWCWESTL3300.0[m]DCUOS3320.0[m]DCUOS3340.0[m]DCUOS3360.0[m]DCUOS3380.0[m]DCUOS3400.0[m]DCUOS3405.0[m]SWCWESTL3420.0[m]DCUOS3440.0[m]DCUOS3460.0[m]DCUOS3480.0[m]DCUOS3520.0[m]DCUOS3540.0[m]DCUOS3560.0[m]DCUOS3568.0[m]SWCWESTL3580.0[m]DCUOS3600.0[m]DCUOS3620.0[m]DCUOS3635.0[m]SWCWESTL3640.0[m]DCUOS3650.0[m]DCUOS3670.0[m]DCUOS3680.0[m]DCUOS3690.0[m]DCUOS3700.0[m]DCUOS3703.0[m]DCUOS3709.0[m]DCUOS3715.0[m]SWCWESTL3721.0[m]SWCWESTL3731.5[m]CWESTL3733.6[m]CWESTL3736.6[m]CWESTL3739.9[m]CWESTL3743.9[m]CWESTL3747.5[m]CWESTL3751.6[m]CWESTL3755.7[m]CWESTL3775.0[m]SWCWESTL3785.0[m]SWCWESTL3798.1[m]CWESTL3802.8[m]CWESTL3806.3[m]CWESTL3810.4[m]CWESTL3813.2[m]CWESTL3815.5[m]CWESTL3818.7[m]CWESTL3870.0[m]SWCWESTL3909.1[m]CWESTL3937.0[m]SWCWESTL3950.0[m]SWCWESTL3957.0[m]SWCWESTL3990.0[m]SWCWESTL4002.0[m]CWESTL4006.2[m]CWESTL4045.0[m]SWCWESTL4066.0[m]DCUOS4078.0[m]DCUOS4090.0[m]DCUOS4102.0[m]DCUOS4111.0[m]DCUOS4123.0[m]DCUOS4132.0[m]DCUOS4141.0[m]DCUOS4153.0[m]DCUOS4162.0[m]DCUOS4174.0[m]DCUOS4189.0[m]DCUOS4204.0[m]DCUOS4216.0[m]DCUOS4233.0[m]SWCWESTL4234.0[m]DCUOS4252.0[m]DCUOS4264.0[m]DCUOS4298.0[m]SWCWESTL4321.0[m]DCUOS4339.0[m]DCUOS4357.0[m]DCUOS4367.0[m]DCUOS