15/6-4
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General information
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Wellbore history
GeneralWell 15/6-4 was drilled on the southern end of the Gudrun Terrace in the North Sea. The objective was to test the hydrocarbon potential of Middle Jurassic (Dogger) sandstones.Operations and resultsWildcat well 15/6-4 was spudded with the semi-submersible installation Norjarl on 28 June 1976 and drilled to TD at 3505 m in the Triassic Smith Bank Formation. The well was drilled water based with lignosulphonate/CMC/lignite below 3097 mTop Draupne Formation was encountered at 3157 m. The target sandstone unit was encountered at 3222 m and was found to be water bearing.Four cores were cut. Cores 1 and 2 were cut from 3226.3 m to 3247.6 m and cores 3 and 4 were cut from 3271.5 m to 3308 m. FIT fluid samples were taken on wire line at 3312 m (small amounts of gas and 10.2 l water) and at 3222.5 m (small amounts of gas and 10.2 l water).The well was permanently abandoned on 16 August 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]180.003505.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom110585.010604.0[ft ]210607.010651.2[ft ]33271.33290.1[m ]43290.13308.1[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]56.1Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1100.0[m]DC1130.0[m]DC1130.0[m]SWC1160.0[m]DC1190.0[m]DC1220.0[m]DC1240.0[m]DC1250.0[m]DC1250.0[m]SWC1280.0[m]DC1310.0[m]DC1340.0[m]DC1370.0[m]DC1400.0[m]DC1410.0[m]DC1430.0[m]DC1460.0[m]DC1490.0[m]DC1500.0[m]DC1520.0[m]DC1550.0[m]DC1580.0[m]DC1610.0[m]DC1640.0[m]DC1650.0[m]DC1670.0[m]DC1700.0[m]DC1700.0[m]SWC1720.0[m]DC1730.0[m]DC1750.0[m]SWC1760.0[m]DC1790.0[m]DC1820.0[m]DC1845.0[m]SWC1850.0[m]DC1850.0[m]DC1880.0[m]DC1885.0[m]SWC1910.0[m]DC1940.0[m]DC1970.0[m]DC1995.0[m]SWC2000.0[m]DC2030.0[m]DC2040.0[m]DC2050.0[m]DC2050.0[m]SWC2060.0[m]DC2090.0[m]DC2100.0[m]DC2110.0[m]DC2120.0[m]DC2130.0[m]DC2150.0[m]SWC2160.0[m]DC2176.0[m]SWC2180.0[m]DC2190.0[m]DC2200.0[m]DC2220.0[m]DC2220.0[m]SWC2249.0[m]SWC2250.0[m]DC2270.0[m]DC2280.0[m]DC2290.0[m]DC2295.0[m]SWC2300.0[m]DC2310.0[m]DC2310.0[m]SWC2326.0[m]SWC2340.0[m]DC2370.0[m]DC2400.0[m]DC2408.0[m]SWC2430.0[m]DC2433.0[m]SWC2460.0[m]DC2490.0[m]DC2490.0[m]DC2520.0[m]DC2550.0[m]DC2580.0[m]DC2612.0[m]DC2635.0[m]SWC2642.0[m]DC2672.0[m]DC2702.0[m]DC2732.0[m]DC2762.0[m]DC2792.0[m]DC2822.0[m]DC2852.0[m]DC2882.0[m]DC2912.0[m]DC2942.0[m]DC2972.0[m]DC3002.0[m]DC3032.0[m]DC3062.0[m]DC3065.0[m]SWC3092.0[m]DC3122.0[m]DC3131.0[m]DC3152.0[m]DC3160.0[m]SWC3161.0[m]DC3170.0[m]SWC3170.0[m]DC3175.0[m]SWC3180.0[m]SWC3182.0[m]DC3185.0[m]SWC3190.0[m]SWC3205.0[m]SWC3207.0[m]SWC3210.0[m]SWC3212.0[m]DC3213.0[m]SWC3215.0[m]SWC3218.0[m]SWC3218.0[m]DC3222.5[m]SWC3223.0[m]SWC3224.0[m]SWC3225.0[m]SWC3227.6[m]C3228.3[m]CRRI3228.5[m]C3228.8[m]CRRI3229.6[m]C3229.6[m]C3230.4[m]C3230.7[m]C3231.0[m]C3231.3[m]C3231.8[m]CRRI3231.8[m]C3232.8[m]C3233.2[m]C3234.4[m]C3234.6[m]C3234.8[m]CRRI3235.3[m]C3236.5[m]C3237.0[m]C3238.0[m]C3238.3[m]C3239.2[m]C3239.7[m]C3243.0[m]C3243.5[m]C3244.0[m]CRRI3244.0[m]C3244.4[m]C3244.9[m]CRRI3250.0[m]SWC3251.0[m]DC3263.0[m]SWC3267.5[m]SWC3272.0[m]DC3274.0[m]CRRI3279.3[m]C3283.9[m]C3287.0[m]C3290.5[m]C3294.0[m]C3295.4[m]C3297.2[m]C3298.1[m]C3307.6[m]C3308.0[m]C3311.0[m]DC3341.0[m]DC3350.0[m]SWC3365.0[m]DC3371.0[m]DC3400.0[m]DC3401.0[m]DC3431.0[m]DC3450.0[m]SWC3461.0[m]DC3488.0[m]DC3491.0[m]DC3505.0[m]DC3505.0[m]SWC -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit1367451017171821742174222522872327260526052667315731573187322232683268 -
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]pdf1.96pdf25.25 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]BHC SON1702742CBL17002518CDM27763505DLL27763505FDC CNL27763511ISF10792753ISF SON3793505MUD1703505VELOCITY1703505 -
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 typeCONDUCTOR30170.036177.00.00SURF.COND.20379.026394.00.00INTERM.13 3/81083.017 1/21097.00.00INTERM.9 5/82775.012 1/42789.00.00OPEN HOLE3530.08 1/23530.00.00 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured1681.06waterbased10971.10waterbased23561.16waterbased27581.15waterbased27881.16waterbased -
Pressure plots
Pressure plots The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.Pressure plots Document nameDocument formatDocument size [MB]pdf0.21