6205/3-1
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General information
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Wellbore history
GeneralWell 6205/3-1 is situated in the northern part of the block on the B-prospect, which is an easterly tilted fault block bounded to the west by a northeast-southwest trending normal fault. The reservoir sequences are truncated at the crest of the fault block. The license area is bounded to the east and south by the Møre-Trøndelag Fault Zone, and to the north by the Jan Mayen fracture zone and the Frøya High. The Gossa High is situated in the western part of the license area at the western boundary of the Møre Basin. Well 6205/3-1 was the first obligation well to be drilled in license 154, and the first to be drilled in the Møre area. No direct correlation to the Haltenbanken or northern North Sea was possible. While the commitment was to drill to 4500 m or to Triassic sediments whichever came first, total depth was planned at 5100 m in Jurassic rocks of the Båt Group. The primary objectives for the well 6205/3-1 were to prove oil in the Jurassic sandstones and to verify the structural and sedimentological inteOperations and resultsWell 6205/3-1 was spudded on 24 October 1989 with the semi-submersible rig "Mærsk Jutlander" and re-spudded on 29 October after high angle had developed in the surface hole. A kickoff was carried out at 2800 m using bent sub and motor from 2800 to 2886 m in two bit runs due to problems in receiving tool face from MWD. Apart from some experiences with tight hole, drilling went on without any significant problems. The well was suspended at 4300 m in the Lower Cretaceous Åsgard Formation on 11 February 1990 because of environmental restrictions, which prohibited drilling through any formations containing hydrocarbons after 15 February. None of the objective horizons were penetrated. The well was re-entered on 20 September 1990 and was thereafter designated 6205/3-l R. The bottom of the rathole below the 9 5/8" shoe was encountered 6 m high at 4294 m. The well was drilled to TD of 5264 m on 6 November 1990. The well bores were drilled with spud mud to 1017 m and KCl polymer mud from 1017 m to TD.
Thinly developed Late Jurassic sandstones were encountered, which proved to be water wet. In 6205/3-1 one conventional core was cut in the Åsgard Formation, from 4220 to 4228.4 m. In 6205/3-1 R a total of six cores were cut in Jurassic sediments in the interval 4332 - 5263 m. RFTs were attempted but only one formation pressure and one fluid sample (4337.1 m) were obtained. Well 6205/3-1 R was plugged and abandoned as a dry hole with shows on 30 November 1990.TestingOne production test was performed over the perforated interval 4324.1 - 4344.1 m. Only water was produced to surface during the test. However, gas was brought to surface when reversing out the tubing contents and samples were taken. -
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]1020.005260.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom14220.04227.3[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]7.3Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
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 typeCONDUCTOR30268.036269.00.00LOTINTERM.20975.0261017.01.62LOTINTERM.13 3/82671.017 1/22689.01.70LOTOPEN HOLE4300.012 1/44300.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CBL VDL GR22002665CNL39404292CST12102675CST27194299DIL BHC SP GR267535DIL LSS SP GR9754298FMS GR39704298LDL AMS9754292MSFL26714292VSP12104000 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit182308308122013171482148215732876289131333133317937803956 -
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]pdf19.08 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured1881.05WATER BASED2221.05WATER BASED2481.05WATER BASED2691.05WATER BASED2801.05WATER BASED4501.05WATER BASED8081.05WATER BASED9750.0013.0WATER BASED10171.00WATER BASED12571.2114.0WATER BASED14691.2423.0WATER BASED15261.2312.0WATER BASED16201.2119.0WATER BASED17771.2328.0WATER BASED18121.2324.0WATER BASED18501.2218.0WATER BASED19951.2020.0WATER BASED21031.2020.0WATER BASED21871.2019.0WATER BASED22311.2014.0WATER BASED23291.2017.0WATER BASED23401.2019.0WATER BASED23871.2018.0WATER BASED24561.2118.0WATER BASED25021.2018.0WATER BASED26281.2017.0WATER BASED26861.2018.0WATER BASED26891.2018.0WATER BASED26921.2222.0WATER BASED27761.2223.0WATER BASED28001.2217.0WATER BASED28151.2217.0WATER BASED28861.2223.0WATER BASED29521.2227.0WATER BASED30651.2217.0WATER BASED30731.2216.0WATER BASED31781.2217.0WATER BASED31801.2218.0WATER BASED32051.2216.0WATER BASED32871.2215.0WATER BASED33121.2220.0WATER BASED33681.2221.0WATER BASED34551.2220.0WATER BASED35631.2220.0WATER BASED36121.2222.0WATER BASED36191.2222.0WATER BASED36571.2220.0WATER BASED36901.2220.0WATER BASED37791.2218.0WATER BASED38511.2322.0WATER BASED39731.2221.0WATER BASED40111.2221.0WATER BASED40601.2721.0WATER BASED40961.2720.0WATER BASED42201.2725.0WATER BASED42271.2715.0WATER BASED42321.2821.0WATER BASED42931.2719.0WATER BASED43001.3119.0WATER BASED -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1040.0[m]DCRRI1070.0[m]DCRRI1110.0[m]DCRRI1130.0[m]DCRRI1150.0[m]DCRRI1160.0[m]DCPALEO1170.0[m]DCRRI1180.0[m]DCPALEO1200.0[m]DCRRI1210.0[m]SWCHYDRO1210.0[m]DCRRI1220.0[m]DCRRI1230.0[m]DCRRI1240.0[m]SWCHYDRO1240.0[m]DCRRI1250.0[m]DCRRI1260.0[m]DCRRI1270.0[m]DCRRI1280.0[m]DCRRI1290.0[m]DCRRI1300.0[m]DCRRI1308.0[m]SWCHYDRO1310.0[m]DCRRI1313.0[m]SWCHYDRO1320.0[m]DCRRI1330.0[m]DCRRI1350.0[m]DCRRI1360.0[m]DCRRI1380.0[m]DCRRI1390.0[m]DCRRI1420.0[m]DCRRI1450.0[m]DCRRI1480.0[m]DCRRI1485.0[m]SWCHYDRO1490.0[m]DCRRI1498.0[m]SWCHYDRO1500.0[m]DCRRI1500.0[m]DCOD1510.0[m]DCRRI1530.0[m]SWCHYDRO1547.0[m]SWCHYDRO1550.0[m]DCOD1555.0[m]DCHYDRO1575.0[m]DCHYDRO1600.0[m]DCOD1650.0[m]DCOD1690.0[m]DCRRI1700.0[m]DCOD1720.0[m]DCOD1750.0[m]DCOD1750.0[m]SWCHYDRO1780.0[m]DCRRI1800.0[m]DCOD1810.0[m]DCPALEO1850.0[m]DCOD1893.0[m]SWCHYDRO1900.0[m]DCOD1950.0[m]DCOD2000.0[m]DCOD2010.0[m]DCPALEO2010.0[m]SWCHYDRO2040.0[m]DCPALEO2050.0[m]DCOD2081.0[m]SWCHYDRO2100.0[m]DCOD2150.0[m]DCPALEO2150.0[m]DCOD2170.0[m]SWCHYDRO2180.0[m]DCPALEO2200.0[m]DCOD2224.0[m]SWCHYDRO2250.0[m]DCOD2300.0[m]DCOD2313.0[m]SWCHYDRO2350.0[m]DCOD2400.0[m]DCOD2418.0[m]DCOD2450.0[m]DCOD2550.0[m]DCOD2570.0[m]DCOD2590.0[m]DCOD2600.0[m]DCOD2610.0[m]DCOD2626.0[m]SWCHYDRO2630.0[m]DCPALEO2630.0[m]DCOD2645.0[m]DCPALEO2650.0[m]DCOD2652.0[m]SWCHYDRO2660.0[m]DCPALEO2670.0[m]DCOD2675.0[m]DCPALEO2675.0[m]SWCHYDRO2685.0[m]DCPALEO2705.0[m]DCPALEO2710.0[m]DCOD2719.0[m]SWCHYDRO2720.0[m]DCPALEO2735.0[m]DCPALEO2750.0[m]DCPALEO2750.0[m]DCOD2755.0[m]SWCHYDRO2765.0[m]DCPALEO2780.0[m]DCPALEO2795.0[m]DCPALEO2795.0[m]SWCHYDRO2810.0[m]DCPALEO2825.0[m]DCPALEO2834.0[m]SWCHYDRO2840.0[m]DCPALEO2850.0[m]DCOD2855.0[m]DCPALEO2865.0[m]SWCHYDRO2870.0[m]DCPALEO2885.0[m]DCPALEO2900.0[m]DCPALEO2910.0[m]DCOD2913.0[m]SWCHYDRO2915.0[m]DCPALEO2920.0[m]SWCHYDRO2930.0[m]DCPALEO2945.0[m]DCPALEO2950.0[m]DCOD2960.0[m]DCPALEO2964.0[m]SWCHYDRO2975.0[m]DCPALEO2990.0[m]DCPALEO3005.0[m]DCPALEO3010.0[m]DCOD3020.0[m]DCPALEO3025.0[m]SWCHYDRO3035.0[m]DCPALEO3050.0[m]DCPALEO3050.0[m]DCOD3050.0[m]SWCHYDRO3065.0[m]DCPALEO3080.0[m]DCPALEO3095.0[m]DCPALEO3110.0[m]DCPALEO3110.0[m]DCOD3114.0[m]SWCHYDRO3125.0[m]DCPALEO3130.0[m]DCOD3140.0[m]DCPALEO3141.0[m]SWCHYDRO3149.0[m]SWCHYDRO3155.0[m]DCPALEO3161.0[m]SWCHYDRO3170.0[m]DCOD3175.0[m]DCPALEO3185.0[m]DCPALEO3190.0[m]DCOD3200.0[m]DCPALEO3210.0[m]DCOD3215.0[m]DCPALEO3226.0[m]SWCHYDRO3230.0[m]DCPALEO3230.0[m]DCOD3245.0[m]DCPALEO3250.0[m]DCOD3260.0[m]DCPALEO3267.0[m]SWCHYDRO3270.0[m]DCOD3275.0[m]DCPALEO3290.0[m]DCPALEO3305.0[m]DCPALEO3310.0[m]DCOD3315.0[m]SWCHYDRO3320.0[m]DCPALEO3330.0[m]DCPALEO3335.0[m]DCPALEO3350.0[m]DCPALEO3352.0[m]SWCHYDRO3365.0[m]DCPALEO3370.0[m]DCOD3380.0[m]DCPALEO3390.0[m]DCOD3390.0[m]SWCHYDRO3395.0[m]DCPALEO3410.0[m]DCPALEO3410.0[m]DCOD3420.0[m]DCOD3425.0[m]DCPALEO3430.0[m]SWCHYDRO3435.0[m]DCPALEO3440.0[m]DCOD3450.0[m]DCPALEO3460.0[m]DCOD3469.0[m]SWCHYDRO3470.0[m]DCPALEO3480.0[m]DCOD3485.0[m]DCPALEO3500.0[m]DCPALEO3510.0[m]DCOD3515.0[m]DCPALEO3530.0[m]DCPALEO3530.0[m]DCOD3540.0[m]SWCHYDRO3545.0[m]DCPALEO3550.0[m]DCOD3560.0[m]DCPALEO3570.0[m]DCOD3575.0[m]DCPALEO3580.0[m]SWCHYDRO3590.0[m]DCPALEO3590.0[m]DCOD3605.0[m]DCPALEO3610.0[m]DCOD3620.0[m]DCPALEO3630.0[m]DCOD3635.0[m]DCPALEO3650.0[m]DCPALEO3650.0[m]DCOD3665.0[m]DCPALEO3675.0[m]DCOD3680.0[m]DCPALEO3690.0[m]DCOD3700.0[m]DCPALEO3707.0[m]SWCHYDRO3710.0[m]DCPALEO3710.0[m]DCOD3720.0[m]DCPALEO3730.0[m]DCOD3740.0[m]DCPALEO3748.0[m]SWCHYDRO3750.0[m]DCOD3755.0[m]DCPALEO3770.0[m]DCPALEO3770.0[m]DCOD3785.0[m]DCPALEO3790.0[m]DCOD3800.0[m]DCPALEO3810.0[m]DCOD3815.0[m]DCPALEO3830.0[m]DCPALEO3830.0[m]DCOD3845.0[m]DCPALEO3850.0[m]DCOD3860.0[m]DCPALEO3870.0[m]DCOD3875.0[m]DCPALEO3890.0[m]DCPALEO3890.0[m]DCOD3905.0[m]DCPALEO3910.0[m]DCOD3910.0[m]SWCHYDRO3920.0[m]DCPALEO3930.0[m]DCOD3935.0[m]DCPALEO3950.0[m]DCOD3950.0[m]DCPALEO3965.0[m]DCPALEO3970.0[m]DCOD3985.0[m]DCPALEO3990.0[m]DCOD3990.0[m]SWCHYDRO3995.0[m]DCPALEO4007.0[m]DCPALEO4012.0[m]DCPALEO4025.0[m]DCPALEO4030.0[m]DCOD4032.0[m]SWCHYDRO4037.0[m]DCPALEO4050.0[m]DCOD4057.0[m]DCPALEO4070.0[m]DCPALEO4070.0[m]DCOD4090.0[m]DCOD4090.0[m]SWCHYDRO4100.0[m]DCPALEO4110.0[m]DCOD4120.0[m]DCPALEO4125.0[m]SWCHYDRO4130.0[m]DCOD4140.0[m]DCPALEO4150.0[m]DCOD4160.0[m]DCPALEO4162.0[m]DCPALEO4170.0[m]DCOD4170.0[m]SWCHYDRO4180.0[m]DCPALEO4190.0[m]DCPALEO4190.0[m]DCOD4200.0[m]DCPALEO4210.0[m]DCOD4219.0[m]SWCHYDRO4220.0[m]DCPALEO4220.0[m]COD4221.5[m]CHYDRO4223.1[m]DCPALEO4223.8[m]COD4225.5[m]CHYDRO4226.9[m]CHYDRO4227.3[m]DCOD4230.0[m]DCOD4240.0[m]SWCHYDRO4250.0[m]DCOD4253.0[m]SWCHYDRO4265.0[m]DCPALEO4270.0[m]DCOD4275.0[m]SWCHYDRO4280.0[m]SWCHYDRO4290.0[m]DCOD4290.0[m]SWCHYDRO4295.0[m]SWCHYDRO4910.0[m]DCOD4960.0[m]DCOD5010.0[m]DCOD5060.0[m]DCOD5110.0[m]DCOD5160.0[m]DCOD5210.0[m]DCOD5260.0[m]DCOD