6608/11-4
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General information
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Wellbore history
GeneralWell 6608/11-4 was drilled on the northeast segment of the Linerle prospect, ca 8 km NNE of the Falk discovery on the Dønna Terrace. The primary objective of the well was to prove hydrocarbons in the Early Jurassic sandstones of the Tilje and Åre Formations.Operations and resultsWildcat well 6608/11-4 was spudded from the drill ship West Navigator on 1 May 2004 and drilled to TD at 2317 m in the Triassic Red Beds. The well was designed with a 36", 12 ¼" and 8 ½" section. A 32" conductor was planned hammered down. This attempt failed and a conventional 30" conductor was set. The 9 5/8" casing was set above a prognosed pressure build-up zone. The well was drilled with seawater and hi-vis sweeps down to 1357 m, and with Glydril (water based KCl/PAC/glycol) from 1357 m to TD. Wire line logs were only run in the 8 1/2" section (1349 m to 2317 m). No shallow gas was observed, as prognosed.The top of the reservoir, the Tilje Formation, was encountered at 1656 m. An oil column of 18 m (1656 - 1674 m) was present in the Tilje and Åre Formation, proved by pressure points and three oil samples from 1657.6 m, 1663 m and 1672.4 m. The oil is heavy (23.1 deg API) and geochemical analyses showed that it is strongly biodegraded. Three water samples were taken at 1677.5 m, 1680.5 m and 1708 m. Sandstones with good reservoir properties were also encountered in the Åre Formation and in the Triassic Grey Beds. Two mini DSTs were performed using the MDT dual packer set up.Two cores were cut in the interval 1662 to 1714 m in the Tilje and Åre Formation.The well was permanently abandoned on 23 May 2004 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]1370.002317.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom11662.01681.0[m ]21688.01713.3[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]44.2Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Oil samples at the Norwegian Offshore Directorate
Oil samples at the Norwegian Offshore Directorate Test typeBottle numberTop depth
MD [m]Bottom depth
MD [m]Fluid typeTest timeSamples availableDST1657.600.00WATER16.05.2004 - 00:00YES -
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 typeCONDUCTOR30426.036425.00.00LOTSURF.COND.9 5/81349.012 1/41357.01.55LOTOPEN HOLE2317.08 1/22317.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CMR+16281725CMR+ BVI16402310FMI13462310MDT DST16631663MDT DST16771677MDT DST16801680MDT DST17721772MDT PRESS15642247MDT SAMPLE16561657MDT SAMPLE16641665MDT SAMPLE17081708MWD MPR - GR RES DIR PRESS4281357MWD RNT - GR RES DIR PRESS13571662MWD RNT - GR RES DIR PRESS17142317PEX HRLA ECS DSI13462318VSP17152300VSP CSI5002272VSP MSIP11001910VSP MSIP EMS16001850 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit3783781390143414341527152715931593165016561656166821532215 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.37 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf3.06 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured8301.0319.0SW / BENTONITE 113571.3024.0SW / BENTONITE 114151.3016.0GLYDRIL 7414651.3015.0GLYDRIL 74