6610/3-1
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General information
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Wellbore history
GeneralWildcat well 6610/3-1 is located ca 80 km southwest of the Røst Island in the Lofoten archipelago of Northern Norway. The main objective was to test the hydrocarbon potential in the Early Jurassic (Tilje Formation) sandstones. A secondary objective was to test the possibility of development of sandy fans from Early Tertiary (Paleocene) to Early Cretaceous.Operations and resultsWildcat well 6610/3-1 was spudded with the semi-submersible installation Deepsea Bergen on 29 October 1992 and drilled to TD at 3126 m in the Late Cretaceous, Lange Formation. Caving bridges caused wire line tools to hang-up and the severe weather conditions magnified the hole stability problems by the rig being disconnected several times. Due to long periods of wait on weather and upcoming drilling restrictions the decision was made to temporarily plug and abandon. No logs exist from seabed to 402 m. The intervals 402 m to 919 m and 2877.5 m to 3126 m were logged with MWD only. The well was drilled with seawater and hi-vis pills down to 938 m and with gypsum/pac mud from 938 m to TDThe well encountered sandy fans of Paleocene and Late Cretaceous age. Shows were recorded in Intra Nise Sandstone at 2282 m to 2320 m, in Lysing sandstone from 2661 m to 2680 m, and in thin limestone stringers in the Lange Formation at 3073 m and at 3167 m. FMT pressure points gave water gradients in all reservoir sequences. Organic geochemical analyses confirm good, scattered oil shows in Intra Nise sandstone from 2293.75 m to 2309.45 m. The shows were characterised as severely biodegraded stains in an irregular pattern with no obvious relation to lithology. The other shows recorded while drilling were not confirmed by these analyses, but they revealed an additional weak show on a sample from an intra Tang Formation sandstone at 1675 m as well as a trace of oil in the FMT water sample from 1645 m. The thin claystones encountered in the Top Intra-Nise Sandstone exhibit the best source rock potential in the well. These claystones contain dominantly terrigenous organic matter, with fair to good potential, for generation of light oil, or gas/condensate. Maturity indicators showed that the well was immature down to ca 2600 m to 2700 m, and in the early oil window from this level to TD.Eight conventional cores were cut in the well bore. Two of these were cut in intra Tang Formation sandstones, three in intra-Nise Formation sandstones, and three in Lysing Formation sandstones. Segregated formation fluid samples were taken with the FMT tool at 1645 m and at 2664 m. Both contained water and mud filtrate.The well was suspended on 17 February 1993 as a well with shows.TestingNo drill stem test was conducted in this well bore. -
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]940.003124.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom11580.01584.8[m ]21708.01714.7[m ]32292.02301.2[m ]42301.22305.3[m ]52305.52313.9[m ]62514.02531.5[m ]72661.02668.1[m ]82668.12692.5[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]82.2Cores 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 typeCONDUCTOR30393.036395.00.00LOTSURF.COND.20919.026920.01.65LOTINTERM.13 3/81744.017 1/21746.01.75LOTOPEN HOLE3126.012 1/43126.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CBL VDL GR8331742CORGUN GR403765CORGUN GR9421378CORGUN GR13901744CORGUN GR18072502DIFL DAC CN CDL GR9191750DIFL DAC CN CDL GR17252877FMT GR15951735FMT GR17632674HRDIP GR9191746HRDIP GR17412871 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit3323323495555551366136614721556158516401805184018402039228223222504250425432655269128893050 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf2.21 -
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]pdf42.35 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured5501.0317.08.0WATER BASED02.11.19929381.0320.07.0WATER BASED02.11.19929381.0320.06.5WATER BASED02.11.19929381.0320.06.5WATER BASED03.11.19929381.0318.06.0WATER BASED04.11.19929381.03WATER BASED05.11.19929381.0322.05.5WATER BASED06.11.19929961.1526.07.5WATER BASED09.11.199214181.3326.05.5WATER BASED09.11.199214561.3324.05.5WATER BASED10.11.199214581.3323.04.0WATER BASED11.11.199215601.3330.07.0WATER BASED12.11.199215871.3333.07.0WATER BASED13.11.199216251.3331.06.5WATER BASED16.11.199216251.3329.06.5WATER BASED16.11.199216251.3329.06.5WATER BASED17.11.199216251.3329.07.0WATER BASED18.11.199216251.3329.06.0WATER BASED19.11.199216301.4535.08.0WATER BASED15.02.199316401.3333.07.0WATER BASED16.11.199217081.3331.06.5WATER BASED16.11.199217241.3329.06.5WATER BASED16.11.199217591.3329.07.0WATER BASED18.11.199217591.3329.06.5WATER BASED17.11.199217591.3329.06.0WATER BASED19.11.199217591.3328.05.5WATER BASED23.11.199217590.0026.05.5WATER BASED23.11.199217631.0326.05.0WATER BASED23.11.199218501.2032.08.0WATER BASED24.11.199219991.2025.05.5WATER BASED26.11.199219991.2030.06.0WATER BASED26.11.199219991.2029.06.0WATER BASED01.12.199221261.4031.06.5WATER BASED08.02.199321721.2029.06.0WATER BASED01.12.199222721.2026.05.0WATER BASED01.12.199222721.2027.05.0WATER BASED01.12.199222721.2025.05.0WATER BASED01.12.199222721.2027.05.0WATER BASED02.12.199222721.2025.05.0WATER BASED03.12.199222721.2026.05.0WATER BASED04.12.199222721.2028.07.5WATER BASED17.12.199222721.2027.07.0WATER BASED18.12.199222721.2021.04.0WATER BASED14.12.199222721.2019.03.5WATER BASED15.12.199222721.2025.05.5WATER BASED16.12.199222721.2025.05.0WATER BASED07.12.199222721.2021.04.5WATER BASED07.12.199222721.2024.05.5WATER BASED09.12.199222721.2025.05.0WATER BASED07.12.199222721.2025.05.5WATER BASED11.12.199222721.2014.03.0WATER BASED14.12.199222921.2526.05.0WATER BASED01.12.199223011.2527.05.0WATER BASED01.12.199223061.2525.05.0WATER BASED01.12.199223141.2527.05.0WATER BASED02.12.199224051.2525.05.0WATER BASED03.12.199224901.2526.05.0WATER BASED04.12.199225101.2525.05.0WATER BASED07.12.199225261.2525.05.0WATER BASED07.12.199225321.2521.04.5WATER BASED07.12.199225411.2524.05.5WATER BASED09.12.199226621.2525.05.5WATER BASED11.12.199226681.2514.03.0WATER BASED14.12.199226921.2521.04.0WATER BASED14.12.199227431.2519.03.5WATER BASED15.12.199228701.2525.05.5WATER BASED16.12.199229131.2528.07.5WATER BASED17.12.199229131.2527.05.5WATER BASED21.12.199229131.2527.07.0WATER BASED18.12.199229131.2525.06.5WATER BASED21.12.199229511.2522.05.0WATER BASED23.12.199230031.2524.05.5WATER BASED23.12.199230151.2931.07.5WATER BASED28.12.199230151.2931.07.5WATER BASED28.12.199230151.2931.07.5WATER BASED28.12.199230151.2931.07.5WATER BASED28.12.199230151.2921.07.0WATER BASED28.12.199230301.2925.06.0WATER BASED29.12.199231101.2925.05.5WATER BASED04.01.199331261.4031.07.0WATER BASED04.01.199331261.4033.08.0WATER BASED04.01.199331261.4029.07.0WATER BASED04.01.199331261.4032.08.0WATER BASED04.01.199331261.4031.07.0WATER BASED05.01.199331261.4032.07.5WATER BASED06.01.199331261.4036.09.5WATER BASED08.01.199331261.4034.08.5WATER BASED12.01.199331261.4033.07.5WATER BASED12.01.199331261.4033.07.5WATER BASED12.01.199331261.4033.07.5WATER BASED13.01.199331261.4032.07.0WATER BASED14.01.199331261.4030.07.5WATER BASED18.01.199331261.4030.07.5WATER BASED18.01.199331261.4032.07.5WATER BASED18.01.199331261.4030.06.5WATER BASED20.01.199331261.4028.07.5WATER BASED20.01.199331261.4028.05.5WATER BASED25.01.199331261.4032.07.0WATER BASED26.01.199331261.4030.07.0WATER BASED26.01.199331261.4033.06.0WATER BASED28.01.199331261.4029.04.5WATER BASED29.01.199331261.4030.05.0WATER BASED01.02.199331261.4033.06.0WATER BASED01.02.199331261.4031.06.0WATER BASED01.02.199331261.4030.05.0WATER BASED02.02.199331261.4033.06.0WATER BASED03.02.199331261.4034.05.5WATER BASED05.02.199331261.4036.05.5WATER BASED08.02.199331261.4032.08.0WATER BASED04.01.199331261.4025.05.0WATER BASED07.01.199331261.4035.08.0WATER BASED12.01.199331261.4032.05.5WATER BASED26.01.199331261.4031.06.5WATER BASED27.01.199331261.4034.06.0WATER BASED04.02.199331261.4035.07.5WATER BASED09.02.199331261.4031.06.5WATER BASED10.02.199331261.4034.06.5WATER BASED08.02.199331261.4539.08.0WATER BASED11.02.199331261.4535.08.0WATER BASED12.02.199331261.4536.08.5WATER BASED15.02.1993 -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory460.0[m]SWCOD480.0[m]SWCOD502.0[m]SWCOD525.0[m]SWCOD555.0[m]SWCOD555.0[m]SWCSTATOIL585.8[m]SWCSTATOI611.0[m]SWCSTATOI643.0[m]SWCSTATOI684.0[m]SWCSTATOI715.0[m]SWCSTATOI733.0[m]SWCSTATOI942.5[m]SWCSTATOI977.0[m]SWCSTATOI1012.5[m]SWCSTATOI1070.0[m]SWCSTATOI1097.0[m]SWCSTATOI1121.0[m]SWCSTATOI1138.5[m]SWCSTATOI1150.0[m]SWCSTATOI1170.0[m]DCSTATOI1190.0[m]DCSTATOI1202.0[m]CSTATOI1217.0[m]DCSTATOI1240.0[m]CSTATOI1259.0[m]SWCSTATOI1275.0[m]SWCSTATOI1290.0[m]DCSTATOI1310.0[m]DCSTATOI1330.0[m]DCSTATOI1345.0[m]SWCSTATOI1357.5[m]SWCSTATOI1378.0[m]SWCSTATOI1393.0[m]SWCSTATOI1423.0[m]SWCSTATOI1440.0[m]SWCSTATOI1456.0[m]SWCSTATOI1475.0[m]SWCSTATOI1480.0[m]SWCSTATOI1488.0[m]SWCSTATOI1502.0[m]SWCSTATOI1516.0[m]SWCSTATOI1532.0[m]SWCSTATOI1547.5[m]SWCSTATOI1580.4[m]SWCSTATOI1584.8[m]CSTATOI1630.0[m]SWCSTATOI1640.0[m]SWCSTATOI1647.0[m]SWCSTATOI1664.0[m]SWCSTATOI1708.4[m]CSTATOI1730.0[m]DCSTATOI1750.0[m]DCSTATOI1770.0[m]DCSTATOI1807.5[m]SWCSTATOI1815.0[m]SWCSTATOI1830.0[m]SWCSTATOI1841.0[m]SWCSTATOI1849.5[m]SWCSTATOI1866.0[m]SWCSTATOI1884.5[m]SWCSTATOI1904.0[m]SWCSTATOI1915.0[m]SWCSTATOI1930.0[m]SWCSTATOI1982.0[m]SWCSTATOI2000.0[m]SWCSTATOI2027.0[m]SWCSTATOI2062.0[m]SWCSTATOI2081.5[m]SWCSTATOI2102.0[m]SWCSTATOI2128.0[m]SWCSTATOI2162.0[m]SWCSTATOI2176.0[m]SWCSTATOI2212.0[m]SWCSTATOI2238.0[m]SWCSTATOI2267.0[m]SWCSTATOI2281.0[m]SWCSTATOI2293.4[m]CSTATOI2296.5[m]CSTATOI2300.3[m]CSTATOI2306.6[m]CSTATOI2309.5[m]CSTATOI2313.9[m]CSTATOI2318.0[m]SWCSTATOI2339.0[m]SWCSTATOI2365.0[m]SWCSTATOI2378.0[m]SWCSTATOI2400.0[m]SWCSTATOI2417.0[m]SWCSTATOI2428.5[m]SWCSTATOI2451.0[m]SWCSTATOI2463.5[m]SWCSTATOI2482.0[m]SWCSTATOI2502.0[m]SWCSTATOI2515.2[m]CSTATOI2520.9[m]CSTATOI2525.5[m]CSTATOI2530.4[m]CSTATOI2545.0[m]DCSTATOI2560.0[m]DCSTATOI2575.0[m]DCSTATOI2590.0[m]DCSTATOI2605.0[m]DCSTATOI2620.0[m]DCSTATOI2635.0[m]DCSTATOI2650.0[m]DCSTATOI2661.1[m]COD2662.8[m]COD2664.2[m]COD2666.8[m]CSTATOIL2667.7[m]COD2673.7[m]COD2673.7[m]CSTATOIL2673.7[m]CSTATOI2676.4[m]COD2678.7[m]COD2679.2[m]COD2679.2[m]CSTATOIL2680.1[m]CSTATOI2680.2[m]COD2682.5[m]COD2685.7[m]COD2685.7[m]CSTATOIL2686.6[m]COD2688.7[m]COD2691.4[m]COD2692.0[m]COD2710.0[m]DCSTATOIL2725.0[m]DCSTATOI2740.0[m]DCSTATOI2755.0[m]DCSTATOI2770.0[m]DCSTATOI2785.0[m]DCSTATOI2800.0[m]DCSTATOI2815.0[m]DCSTATOI2830.0[m]DCSTATOI2845.0[m]DCSTATOI2860.0[m]DCSTATOI2875.0[m]DCSTATOI2890.0[m]DCSTATOI2905.0[m]DCSTATOI2920.0[m]DCSTATOI2935.0[m]DCSTATOI2950.0[m]DCSTATOI2959.0[m]DCSTATOI2968.0[m]DCSTATOI2977.0[m]DCSTATOI2986.0[m]DCSTATOI2995.0[m]DCSTATOI3004.0[m]DCSTATOI3013.0[m]DCSTATOI3022.0[m]DCSTATOI3031.0[m]DCSTATOI3040.0[m]DCSTATOI3049.0[m]DCSTATOI3058.0[m]DCSTATOI3067.0[m]DCSTATOI