17/11-2
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General information
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Wellbore history
GeneralThe prospect lay in the Egersund Basin West of Phillips' marginal Bream and Brisling discoveries. Well 17/11-2 was located to penetrate Middle Jurassic/Triassic sands on the west flank of a NNE-SSW piercement salt wall. A pair of prominent west-dipping growth faults marks the western edge of the salt wall.The well is reference well for the Åsgard Formation and Ran sandstone units.Operations and resultsWildcat well 17/11-2 was spudded with the semi-submersible installation Chris Chenery on 12 April 1976 and drilled to TD at 2644 m in the Triassic sediments. The well was drilled without significant problems with bentonite/seawater spud mud down to 436 m and with Lime/PAC (Drispac)/seawater from 436 m to TD.Top chalk was picked at 1323 m. Dipmeter evidence indicated several faults within the Early Cretaceous sequence, at 2025 m, 2244 m and 2382 m. Apart from minor gas shows while drilling in the Early Cretaceous/Late Jurassic shales, no hydrocarbon indications (shows and logs) were seen in the well. Dark grey to black carbonaceous Kimmeridgian shales were penetrated from 2495 m to 2521 m. The top of the target ?Triassic sandstone at 2521 m was marked by a sudden increase in penetration rate and sand grains in the cuttings. A total of 35 m net sand with 17 - 30 % porosity was evaluated, the thickest single sand unit was 7.5 m. One conventional core was cut from 2532.7m to 2540.4 m. No fluid samples were taken.The well was permanently abandoned on 24 March 1969 as dry hole.TestingNo drill stem test was performed. -
Cuttings at the Norwegian Offshore Directorate
Cuttings at the Norwegian Offshore Directorate Cuttings available for sampling?NOCuttings at the Norwegian Offshore Directorate Cutting sample, top depth [m]Cutting samples, bottom depth [m]210.002645.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom18310.08323.0[ft ]28323.08335.0[ft ]Cores at the Norwegian Offshore Directorate Total core sample length [m]7.6Cores 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 typeCONDUCTOR30188.036198.00.00LOTSURF.COND.20427.026429.00.00LOTINTERM.13 3/81306.017 1/21322.00.00LOTOPEN HOLE2644.012 1/42644.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]BHC GR189436CBL110590CDM13072627DLL MSFL GR11502631FDC CNL GR11502638ISF SONIC GR SP2681025ISF SONIC GR SP8752635SRS1892636 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit112689122012201245127013101323132313541640170017871787180224102410242224952513252125212608 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.35 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf0.72 -
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]pdf5.37pdf1.27pdf0.97pdf2.01pdf1.48pdf2.12 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured1980.00seawater4341.11water based13221.14water based21651.15water based26441.14water based