6306/3-1 S
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General information
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Wellbore history
GeneralWell 6306/3-1 S was drilled to evaluate the Fat Canyon prospect on the Fr ya High south of the Fenja Field in the Norwegian Sea. The primary objective was to prove and evaluate the potential Early Cretaceous to Late Jurassic sandstone reservoir of the Fat Canyon prospect and to test if the reservoir contained economically recoverable hydrocarbons.Operations and resultsWildcat well 6306/3-1 S was spudded with the semi-submersible installation Borgland Dolphin on 30 September 2021. After drilling the top 36" hole to 338 m a 9 7/8" pilot was drilled to 976 m. The pilot encountered shallow gas at 468 m and 793 m. The upper zone was killed dynamically and drained controllably. The lower zone was plugged back with cement and the pilot was opened to 26" down to 657. The 20" casing was set at 650 and drilling commenced with a 17 1/2" section and 12 1/4" section to 2365 m. Here, the 9 5/8" casing stuck before reaching the planned setting and this led to several days NPT and in the end a technical sidetrack (6306/3-1 ST2) was made with kick-off at 1076 m. This bore holed was drilled to final TD at 2384 m (2384 m TVD) in Basement rocks. The well was drilled with seawater and hi-vis pills down to 657 m, with Glydril Plus from 657 to 2100 m and with Versatec oil-based mud from 2100 m to TD.The target Rogn Formation reservoir was penetrated from 2318 to 2345 m and consisted of very well cemented calcareous Sandstones and sandy Limestones. The potential Early Cretaceous Lyr Formation reservoir was not present and only Claystone lithologies were encountered. There were no hydrocarbon indicators observed whilst drilling.Due to dry well no cores were cut, no logs were run on wire line and no wire line fluid sample was taken.The well was permanently abandoned on 10 December 2021 as a dry well.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]660.002363.00 -
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 typeCONDUCTOR30337.836338.20.00INTERM.20651.526657.01.47FITINTERM.13 3/81041.017 1/21048.01.71FITINTERM.9 5/82091.212 1/42100.01.86LOT2365.012 1/42365.00.00OPEN HOLE2383.88 1/22383.80.00 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]LWD - DI272336LWD - DI PWD RES GR SM CAL DEN N10482365LWD - ECD GR RES DI338657LWD - GR ECD DEN NEU RES DI SON338972LWD - GR ECD DI338976LWD - PRES RES GR DI6571048T2 LWD - DI RES GR SON PWD10762104T2 LWD - RES GR PWD DEN CAL NEU-21042384T2 LWD - SPEC DI PRO SON21042384 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit272272991100110011358135815001665166517661936220822082313231823182345 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured1401.4626.025.0GlyDril Plus3271.491.01.0Spud mud4181.2916.07.0GlyDrill Plus5101.4722.040.0Glydril Plus6571.249.034.0Glydril Plus6921.491.01.0Kill mud7201.491.01.0Spud mud7231.379.034.0Spud mud7751.2421.016.0GlyDril Plus8021.2718.09.0GlyDrill Pluss9651.2523.015.0Glydril Plus9761.491.01.0Kill mud10151.2521.014.0GlyDril Plus10411.4623.011.0Glydril Plus10481.3022.015.0GlyDril Plus10801.4623.014.0Glydril Plus21301.4622.016.0GlyDril Plus21401.3022.011.0Versatec OBM21421.4621.013.0GlyDril Plus22431.2928.014.0OBM Versatec22781.4625.016.0GlyDril Plus23001.2929.014.0Versatec OBM23351.4624.014.0GlyDril Plus23841.2928.07.0Versatec OBM