34/10-37
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General information
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Wellbore history
GeneralWildcat well 34/10-37 was drilled in the Tampen Spur area, ca 8 km WNW of the Gullfaks Sør Field. The main objective of the well was to test the potential for hydrocarbons in the sandstones of Middle Jurassic age (Brent Group) on the Delta prospect.Operations and resultsWell 34/10-37 was spudded with the semi-submersible installation Deepsea Bergen on 26 January 1995 and drilled to TD at 2873 m in the Early Jurassic Drake Formation. No significant problems were encountered in the operations. The well was drilled with bentonite/CMC EHV down to 1525 m, and with KCl/PAC from 1525 m to TD.Well 34/10-37 penetrated the Brent Group at 2613 m; about 58 m deeper than prognosed and the Tarbert Formation was found to be absent. The Brent Group proved to be hydrocarbon bearing with an OWC at 2645 m (2622 m TVD MSL).Two conventional cores were cut from 2626 m to 2673 m in the Ness Formation. Segregated FMT samples were taken at 2624.7 m (both contained oil and gas), 2629 m (oil and gas), 2642 m (oil and gas), and at 2670 m (water with gas). The results from 34/10-37 indicated a more complex fault pattern at the crest of the structure than expected and it was decided to drill a side track. The well bore was plugged back to 2055 m on 22 February 1995 and abandoned as an oil discovery.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]1530.002873.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom12626.02644.7[m ]22645.02672.1[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]45.8Cores 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 typeCONDUCTOR30222.036228.00.00LOTINTERM.13 3/81504.017 1/21525.01.65LOTINTERM.9 5/82353.012 1/42369.02.04LOTOPEN HOLE2873.08 1/22873.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]DIPLOG GR25452872DLL MLL DAC ZDL CN DSL23512872FMT QDYNE GR26162780FMT QDYNE GR26242624FMT QDYNE GR26242624FMT QDYNE GR26292629FMT QDYNE GR26702670MWD - DPR2281525MWD - RGD15252873SWC GR25002824SWC GR25072840VSP5002870 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit1639169581754175418301858251725172613261327302750279628102810 -
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]pdf33.54 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured1851.03WATER BASED5711.03WATER BASED14151.03WATER BASED15251.03WATER BASED21741.5732.0WATER BASED23691.4829.0WATER BASED26121.5736.0WATER BASED26401.5732.0WATER BASED28251.5736.0WATER BASED -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1530.0[m]DCGEOST1540.0[m]DCGEOST1560.0[m]DCGEOST1570.0[m]DCGEOST1590.0[m]DCGEOST1600.0[m]DCGEOST1620.0[m]DCGEOST1630.0[m]DCGEOST1650.0[m]DCGEOST1660.0[m]DCGEOST1680.0[m]DCGEOST1690.0[m]DCGEOST1710.0[m]DCGEOST1720.0[m]DCGEOST1740.0[m]DCGEOST1750.0[m]DCGEOST1770.0[m]DCGEOST1780.0[m]DCGEOST1800.0[m]DCGEOST1810.0[m]DCGEOST1830.0[m]DCGEOST1840.0[m]DCGEOST1860.0[m]DCGEOST1870.0[m]DCGEOST1890.0[m]DCGEOST1900.0[m]DCGEOST1920.0[m]DCGEOST1930.0[m]DCGEOST1950.0[m]DCGEOST1960.0[m]DCGEOST1980.0[m]DCGEOST2000.0[m]DCGEOST2010.0[m]DCGEOST2020.0[m]DCGEOST2040.0[m]DCGEOST2050.0[m]DCGEOST2070.0[m]DCGEOST2080.0[m]DCGEOST2100.0[m]DCGEOST2110.0[m]DCGEOST2130.0[m]DCGEOST2140.0[m]DCGEOST2160.0[m]DCGEOST2170.0[m]DCGEOST2190.0[m]DCGEOST2200.0[m]DCGEOST2220.0[m]DCGEOST2230.0[m]DCGEOST2250.0[m]DCGEOST2260.0[m]DCGEOST2280.0[m]DCGEOST2290.0[m]DCGEOST2300.0[m]DCGEOST2330.0[m]DCGEOST2340.0[m]DCGEOST2350.0[m]DCGEOST2360.0[m]DCGEOST2380.0[m]DCGEOST2390.0[m]DCGEOST2410.0[m]DCGEOST2420.0[m]DCGEOST2440.0[m]DCGEOST2450.0[m]DCGEOST2456.0[m]DCGEOST2462.0[m]DCGEOST2468.0[m]DCGEOST2477.0[m]DCGEOST2483.0[m]DCGEOST2489.0[m]DCGEOST2495.0[m]DCGEOST2501.0[m]DCGEOST2507.0[m]DCGEOST2513.0[m]DCGEOST2519.0[m]DCGEOST2525.0[m]DCGEOST2528.0[m]DCGEOST2534.0[m]DCGEOST2540.0[m]DCGEOST2546.0[m]DCGEOST2549.0[m]DCGEOST2558.0[m]DCGEOST2563.0[m]SWCSTATO2570.0[m]DCGEOST2579.0[m]DCGEOST2583.0[m]DCSTATO2591.0[m]DCGEOST2596.0[m]SWCSTATO2603.0[m]DCGEOST2608.0[m]DCWESTL2609.0[m]DCGEOST2611.0[m]DCWESTL2612.0[m]SWCSTATO2614.0[m]DCWESTL2617.0[m]DCWESTL2619.0[m]SWCSTATO2619.0[m]SWCWESTL2620.0[m]DCWESTL2624.0[m]DCGEOST2626.0[m]DCWESTL2626.0[m]CSTATO2629.0[m]CSTATO2631.0[m]CSTATO2633.0[m]CSTATO2637.0[m]CSTATO2639.0[m]CSTATO2641.0[m]CSTATO2644.0[m]CSTATO2645.0[m]CSTATO2648.0[m]CSTATO2651.0[m]CSTATO2655.0[m]CSTATO2658.0[m]CSTATO2661.0[m]CSTATO2663.0[m]CSTATO2665.0[m]CSTATO2667.0[m]CSTATO2671.0[m]CSTATO2678.0[m]DCGEOST2684.0[m]DCGEOST2690.0[m]DCGEOST2694.0[m]SWCSTATO2703.0[m]SWCSTATO2710.0[m]SWCSTATO2720.0[m]DCGEOST2729.0[m]SWCSTATO2734.0[m]SWCSTATO2741.0[m]DCGEOST2747.0[m]DCGEOST2759.0[m]DCGEOST2765.0[m]DCGEOST2774.0[m]DCGEOST2780.0[m]DCGEOST2786.0[m]DCGEOST2792.0[m]DCGEOST2799.0[m]SWCSTATO2806.0[m]SWCSTATO2810.0[m]DCGEOST2815.0[m]SWCSTATO2822.0[m]DCGEOST2828.0[m]DCGEOST2834.0[m]DCGEOST2840.0[m]SWCSTATO2846.0[m]DCGEOST2852.0[m]DCGEOST2858.0[m]DCGEOST2864.0[m]DCGEOST2870.0[m]DCGEOST2873.0[m]DCGEOST