6507/8-6
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General information
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Wellbore history
GeneralWildcat well 6507/8-6 was drilled on a structure ca 4.5 km NE of the Heidrun Nord 6507/8-4 Discovery well. The main objective was to test the potential for hydrocarbons in Middle and Early Jurassic sandstones in the Fangst and BÅt Groups.Operations and resultsWildcat well was spudded with the semi-submersible installation Deepsea Bergen on 29 August 1993 and drilled to TD at 2850 m in the Triassic Red Beds. After setting the 13 3/8 casing shoe at 1605 m 213.5 hours rig time was spent due to problems with running the pack off assembly. The interval from seafloor to 1605 m was logged by MWD only. No other significant deviation from planned operations occurred. The well was drilled with seawater and hi-vis pills down to 685 m and with gypsum/PAC from 685 m to TD.In addition to sandstones of Middle and Early Jurassic age also Melke sandstones of Late Jurassic age were encountered. The well was 100% water wet all through. Fluorescence but no cut was observed in two samples from 2073 (siltstone/limestone in base intra-Melke sandstone) and 2232 m (sandstone in Tilje Formation). One conventional core was cut in the interval 2054 m to 2072 m in the intra-Melke sandstone. Only 5.3 m (24.9%) was recovered. One segregated sample was taken at 2049.0 m in the intra-Melke sandstone. Both chambers contained water and mud filtrate.The well was permanently abandoned on 9 October 1993 as a dry well.TestingNo drill stem test was performed in the well. -
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]690.002850.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom12054.02059.3[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]5.3Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Core photos
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Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1610.0[m]DCGEOST1630.0[m]DCGEOST1640.0[m]DCGEOST1660.0[m]DCGEOST1672.5[m]SWCSTATO1689.9[m]SWCSTATO1700.0[m]DCGEOST1718.1[m]SWCSTATO1727.1[m]SWCSTATO1735.1[m]SWCSTATO1755.1[m]SWCSTATO1775.6[m]SWCSTATO1790.0[m]DCGEOST1797.6[m]SWCSTATO1815.0[m]DCGEOST1829.6[m]SWCSTATO1877.5[m]SWCSTATO1910.0[m]SWCSTATO1915.0[m]SWCSTATO1917.7[m]SWCSTATO1930.0[m]DCGEOST1936.0[m]SWCSTATO1948.0[m]SWCSTATO1957.0[m]SWCSTATO1962.0[m]SWCSTATO1967.5[m]SWCSTATO1976.0[m]SWCSTATO1985.0[m]DCGEOST1986.5[m]SWCSTATO1995.0[m]SWCSTATO2005.0[m]SWCSTATO2019.0[m]SWCSTATO2030.0[m]DCGEOST2031.5[m]SWCSTATO2042.5[m]SWCSTATO2054.0[m]DCSTATO2054.3[m]CRRI2056.0[m]CGEOST2057.0[m]CSTATO2057.5[m]CRRI2058.5[m]CRRI2058.7[m]CSTATO2058.8[m]CRRI2059.0[m]CGEOST2064.0[m]SWCGEOST2069.0[m]SWCSTATO2072.0[m]SWCSTATO2074.0[m]SWCSTATO2075.5[m]SWCGEOST2083.0[m]SWCSTATO2085.0[m]SWCGEOST2089.0[m]SWCGEOST2090.0[m]DCSTATO2092.0[m]SWCSTATO2095.5[m]SWCSTATO2102.5[m]SWCSTATO2110.0[m]SWCSTATO2112.0[m]DCGEOST2122.0[m]SWCGEOST2124.0[m]DCGEOST2126.5[m]SWCGEOST2139.5[m]SWCSTATO2151.0[m]SWCSTATO2154.0[m]DCGEOST2158.0[m]SWCSTATO2172.0[m]DCGEOST2177.0[m]SWCSTATO2190.0[m]DCGEOST2200.0[m]DCGEOST2207.0[m]SWCSTATO2219.0[m]SWCSTATO2235.0[m]DCGEOST2250.0[m]DCGEOST2256.0[m]SWCSTATO2271.0[m]DCGEOST2286.0[m]DCGEOST2300.0[m]DCGEOST2316.0[m]SWCSTATO2330.0[m]SWCSTATO2346.0[m]DCGEOST2361.0[m]DCGEOST2373.0[m]DCGEOST2379.0[m]SWCSTATO2391.0[m]DCGEOST2412.0[m]DCGEOST2427.0[m]DCGEOST2440.0[m]SWCSTATO2457.0[m]DCGEOST2469.0[m]DCGEOST2484.0[m]DCGEOST2499.0[m]DCGEOST2514.0[m]DCGEOST2522.0[m]SWCSTATO2534.0[m]SWCSTATO2550.0[m]DCGEOST2565.0[m]DCGEOST2580.0[m]DCGEOST2590.0[m]SWCSTATO2604.0[m]DCGEOST2619.0[m]DCGEOST2631.0[m]DCGEOST2649.0[m]DCGEOST2664.0[m]DCGEOST2679.0[m]DCGEOST2694.0[m]DCGEOST2709.0[m]DCGEOST2721.0[m]DCGEOST2742.0[m]DCGEOST2754.0[m]DCGEOST2769.0[m]DCGEOST2784.0[m]DCGEOST2802.0[m]DCGEOST2814.0[m]DCGEOST2829.0[m]DCGEOST2850.0[m]DCGEOST -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit379379141717221722186818681957197419742033204720752096209621202128214721472165227526562743 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf5.51 -
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]pdf44.99 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CBIL GR20352808CBL VDL GR15121690DIFL ACL ZDL GR16051899DIFL MAC GR18502582DIFL MAC GR25822822FMT QDYNE GR20492612HXDIP GR19022814MWD - DIR450685MWD - GR RES DIR6852850VELOCITY5002810ZDL CNL GR19022827 -
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 typeCONDUCTOR30441.036441.00.00LOTINTERM.20673.026673.01.38LOTINTERM.13 3/81605.017 1/21605.01.72LOTINTERM.9 5/81902.012 1/41902.01.76LOTOPEN HOLE2850.08 1/22850.00.00LOT -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured5651.03DUMMY01.09.19936851.20DUMMY03.09.19936851.03DUMMY06.09.19936851.03DUMMY06.09.19936851.03DUMMY02.09.199310761.3019.04.0WATER BASED06.09.199314681.3019.06.5WATER BASED07.09.199316201.3022.06.5WATER BASED09.09.199316201.3018.05.0WATER BASED09.09.199316201.3018.05.0WATER BASED13.09.199316201.3018.05.0WATER BASED13.09.199316201.3016.04.0WATER BASED13.09.199316201.3019.05.5WATER BASED13.09.199316201.3019.06.0WATER BASED15.09.199316201.3020.05.5WATER BASED17.09.199316201.3020.07.0WATER BASED17.09.199316201.3022.07.0WATER BASED20.09.199316201.3019.05.5WATER BASED20.09.199317601.4023.07.0WATER BASED20.09.199318151.4023.07.0WATER BASED20.09.199318401.4024.06.0WATER BASED22.09.199318401.4525.06.0WATER BASED22.09.199319191.4024.06.0WATER BASED22.09.199320541.2022.06.5WATER BASED28.09.199320721.2021.06.5WATER BASED28.09.199323051.2022.07.0WATER BASED28.09.199324841.2021.05.5WATER BASED28.09.199327681.2022.05.0WATER BASED30.09.199328501.2021.04.5WATER BASED01.10.199328501.2021.04.5WATER BASED04.10.199328501.2021.04.5WATER BASED04.10.199328501.2023.05.5WATER BASED30.09.199328501.2021.04.5WATER BASED04.10.1993 -
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]pdf0.28