35/6-2 S
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General information
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Wellbore history
GeneralWell 35/6-2 S was drilled on the Måløy Slope in the Northern North Sea, in the block just north of the Gjøa field and the 35/9-3 Discovery. The main objectives were to prove hydrocarbons in the Early Cretaceous Grosso prospect and the Late Cretaceous Silius prospect. It is a replacement well for well 35/6-1 S, which was abandoned due to a shallow water flow.Operations and resultsA 12 1/4" pilot well (35/6-U-1) was spudded with the semi-submersible installation Ocean Vanguard 10 February 2009 and drilled to 585 m, the expected TD of 20" casing in the new well 35/6-2 S, in order to check for high pressure shallow water. The pilot well was flow checked and no flow was seen. Wildcat well 35/6-2 S was spudded on 4 February 2009 and drilled to TD at 3700 m (3583 m TVD) in Hauterivian aged sandstones within the Cromer Knoll Group where drilling was terminated due to hole problems. The well path was vertical down to ca 1830 m. From there the deviation angle increased up to maximum 33.6 deg at 2800 m and dropped of to ca 9 deg at TD. The well was drilled with seawater and hi-vis pills down to 585 m, with Performadril water based mud with 2.5 - 5% glycol from 585 m to 1662 m, and with Spec 12c yellow oil based mud from 1662 m to TD.The well penetrated rocks of Quaternary, Tertiary and Cretaceous age. The well encountered the Silius reservoir at 2195 m (2190.2 m TVD) and the extensive Grosso sandstones (Agat Formation) at 3015 m (2931 m TVD). Both reservoirs were water wet. A third sand-prone interval from 3500 m to 3700 m (TD) was penetrated. This interval was dated as earliest Late Hauterivian to Early Hauterivian and is therefore of age-equivalence to the Ran Sandstone Units of the Åsgard Formation. No shows were recorded in the well.No cores were cut and no wire line fluid samples were taken.The well was permanently abandoned on 4 April 2009 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]588.003690.00 -
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 typeCONDUCTOR30426.036426.00.00LOTSURF.COND.20581.026582.01.57LOTINTERM.13 3/81654.017 1/21662.01.51LOTINTERM.9 5/83007.012 1/43008.01.50LOTOPEN HOLE3700.08 1/23700.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]DSI PEX16593008DSI PEX30093620MDT21012208MDT30403580MWD LWD - ARCVRES8 POWERPULSE16593008MWD LWD - ARCVRS9 POWERPULSE4291659MWD LWD - GVR6 ARCVRS6 TELESCOPE30123620MWD LWD - TELE & ACOSCOPE VSONIC36203700VSP6703500 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit36653260762262762766973085213351355135514112195221123752620265729462946301533913500 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured5801.1721.0Spud Mud6101.1420.0HPWBM6251.1517.0HPWBM6551.1220.0HPWBM8011.1528.0HPWBM9191.1431.0HPWBM13601.1525.0HPWBM16591.1432.0HPWBM18101.2439.0OBM-Standard29701.2021.0OBM-Standard29771.2820.0OBM-Standard33551.2820.0OBM-Standard36201.2822.0OBM-Standard36931.3624.0OBM-Standard37001.2721.0OBM-Standard -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory590.0[m]DCMILLENNI600.0[m]DCMILLEN610.0[m]DCMILLEN620.0[m]DCMILLEN630.0[m]DCMILLEN640.0[m]DCMILLEN650.0[m]DCMILLEN660.0[m]DCMILLEN670.0[m]DCMILLEN680.0[m]DCMILLEN690.0[m]DCMILLEN700.0[m]DCMILLEN710.0[m]DCMILLEN720.0[m]DCMILLEN730.0[m]DCMILLEN740.0[m]DCMILLEN750.0[m]DCMILLEN760.0[m]DCMILLEN770.0[m]DCMILLEN780.0[m]DCMILLEN790.0[m]DCMILLEN800.0[m]DCMILLEN810.0[m]DCMILLEN820.0[m]DCMILLEN830.0[m]DCMILLEN840.0[m]DCMILLEN850.0[m]DCMILLEN860.0[m]DCMILLEN870.0[m]DCMILLEN880.0[m]DCMILLEN890.0[m]DCMILLEN900.0[m]DCMILLEN910.0[m]DCMILLEN920.0[m]DCMILLEN930.0[m]DCMILLEN940.0[m]DCMILLEN950.0[m]DCMILLEN960.0[m]DCMILLEN970.0[m]DCMILLEN980.0[m]DCMILLEN990.0[m]DCMILLEN1000.0[m]DCMILLEN1010.0[m]DCMILLEN1020.0[m]DCMILLEN1030.0[m]DCMILLEN1040.0[m]DCMILLEN1050.0[m]DCMILLEN1060.0[m]DCMILLEN1070.0[m]DCMILLEN1080.0[m]DCMILLEN1090.0[m]DCMILLEN1100.0[m]DCMILLEN1110.0[m]DCMILLEN1120.0[m]DCMILLEN1130.0[m]DCMILLEN1140.0[m]DCMILLEN1150.0[m]DCMILLEN1160.0[m]DCMILLEN1170.0[m]DCMILLEN1180.0[m]DCMILLEN1190.0[m]DCMILLEN1200.0[m]DCMILLEN1210.0[m]DCMILLEN1220.0[m]DCMILLEN1230.0[m]DCMILLEN1240.0[m]DCMILLEN1250.0[m]DCMILLEN1260.0[m]DCMILLEN1270.0[m]DCMILLEN1280.0[m]DCMILLEN1290.0[m]DCMILLEN1300.0[m]DCMILLEN1310.0[m]DCMILLEN1320.0[m]DCMILLEN1330.0[m]DCMILLEN1340.0[m]DCMILLEN1350.0[m]DCMILLEN1360.0[m]DCMILLEN1370.0[m]DCMILLEN1380.0[m]DCMILLEN1390.0[m]DCMILLEN1400.0[m]DCMILLEN1410.0[m]DCMILLEN1420.0[m]DCMILLEN1430.0[m]DCMILLEN1440.0[m]DCMILLEN1450.0[m]DCMILLEN1460.0[m]DCMILLEN1470.0[m]DCMILLEN1480.0[m]DCMILLEN1490.0[m]DCMILLEN1500.0[m]DCMILLEN1510.0[m]DCMILLEN1520.0[m]DCMILLEN1530.0[m]DCMILLEN1540.0[m]DCMILLEN1550.0[m]DCMILLEN1560.0[m]DCMILLEN1570.0[m]DCMILLEN1580.0[m]DCMILLEN1590.0[m]DCMILLEN1600.0[m]DCMILLEN1610.0[m]DCMILLEN1620.0[m]DCMILLEN1630.0[m]DCMILLEN1640.0[m]DCMILLEN1650.0[m]DCMILLEN1674.0[m]DCMILLEN1683.0[m]DCMILLEN1692.0[m]DCMILLEN1701.0[m]DCMILLEN1710.0[m]DCMILLEN1719.0[m]DCMILLEN1728.0[m]DCMILLEN1737.0[m]DCMILLEN1746.0[m]DCMILLEN1755.0[m]DCMILLEN1764.0[m]DCMILLEN1782.0[m]DCMILLEN1791.0[m]DCMILLEN1800.0[m]DCMILLEN1809.0[m]DCMILLEN1818.0[m]DCMILLEN1827.0[m]DCMILLEN1836.0[m]DCMILLEN1845.0[m]DCMILLEN1854.0[m]DCMILLEN1863.0[m]DCMILLEN1872.0[m]DCMILLEN1881.0[m]DCMILLEN1890.0[m]DCMILLEN1899.0[m]DCMILLEN1908.0[m]DCMILLEN1917.0[m]DCMILLEN1926.0[m]DCMILLEN1935.0[m]DCMILLEN1944.0[m]DCMILLEN1953.0[m]DCMILLEN1962.0[m]DCMILLEN1974.0[m]DCMILLEN1983.0[m]DCMILLEN1992.0[m]DCMILLEN2001.0[m]DCMILLEN2010.0[m]DCMILLEN2013.0[m]DCMILLEN2028.0[m]DCMILLEN2037.0[m]DCMILLEN2046.0[m]DCMILLEN2055.0[m]DCMILLEN2064.0[m]DCMILLEN2076.0[m]DCMILLEN2085.0[m]DCMILLEN2094.0[m]DCMILLEN2103.0[m]DCMILLEN2112.0[m]DCMILLEN2121.0[m]DCMILLEN2130.0[m]DCMILLEN2139.0[m]DCMILLEN2148.0[m]DCMILLEN2156.0[m]DCMILLEN2168.0[m]DCMILLEN2178.0[m]DCMILLEN2187.0[m]DCMILLEN2199.0[m]DCMILLEN2211.0[m]DCMILLEN2217.0[m]DCMILLEN2229.0[m]DCMILLEN2238.0[m]DCMILLEN2247.0[m]DCMILLEN2256.0[m]DCMILLEN2265.0[m]DCMILLEN2274.0[m]DCMILLEN2283.0[m]DCMILLEN2292.0[m]DCMILLEN2301.0[m]DCMILLEN2310.0[m]DCMILLEN2319.0[m]DCMILLEN2328.0[m]DCMILLEN2337.0[m]DCMILLEN2346.0[m]DCMILLEN2355.0[m]DCMILLEN2364.0[m]DCMILLEN2373.0[m]DCMILLEN2382.0[m]DCMILLEN2391.0[m]DCMILLEN2400.0[m]DCMILLEN2409.0[m]DCMILLEN2418.0[m]DCMILLEN2424.0[m]DCMILLEN2439.0[m]DCMILLEN2448.0[m]DCMILLEN2457.0[m]DCMILLEN2466.0[m]DCMILLEN2478.0[m]DCMILLEN2493.0[m]DCMILLEN2502.0[m]DCMILLEN2511.0[m]DCMILLEN2520.0[m]DCMILLEN2529.0[m]DCMILLEN2538.0[m]DCMILLEN2547.0[m]DCMILLEN2562.0[m]DCMILLEN2571.0[m]DCMILLEN2580.0[m]DCMILLEN2589.0[m]DCMILLEN2598.0[m]DCMILLEN2607.0[m]DCMILLEN2616.0[m]DCMILLEN2625.0[m]DCMILLEN2646.0[m]DCMILLEN2655.0[m]DCMILLEN2664.0[m]DCMILLEN2673.0[m]DCMILLEN2682.0[m]DCMILLEN2691.0[m]DCMILLEN2700.0[m]DCMILLEN2709.0[m]DCMILLEN2718.0[m]DCMILLEN2727.0[m]DCMILLEN2736.0[m]DCMILLEN2745.0[m]DCMILLEN2754.0[m]DCMILLEN2763.0[m]DCMILLEN2772.0[m]DCMILLEN2781.0[m]DCMILLEN2790.0[m]DCMILLEN2799.0[m]DCMILLEN2808.0[m]DCMILLEN2817.0[m]DCMILLEN2826.0[m]DCMILLEN2835.0[m]DCMILLEN2853.0[m]DCMILLEN2862.0[m]DCMILLEN2871.0[m]DCMILLEN2880.0[m]DCMILLEN2889.0[m]DCMILLEN2907.0[m]DCMILLEN2916.0[m]DCMILLEN2925.0[m]DCMILLEN2934.0[m]DCMILLEN2943.0[m]DCMILLEN2952.0[m]DCMILLEN2961.0[m]DCMILLEN2970.0[m]DCMILLEN2979.0[m]DCMILLEN2988.0[m]DCMILLEN2997.0[m]DCMILLEN3006.0[m]DCMILLEN3015.0[m]DCMILLEN3024.0[m]DCMILLEN3033.0[m]DCMILLEN3041.0[m]DCMILLEN3051.0[m]DCMILLEN3057.0[m]DCMILLEN3066.0[m]DCMILLEN3075.0[m]DCMILLEN3085.0[m]DCMILLEN3093.0[m]DCMILLEN3102.0[m]DCMILLEN3111.0[m]DCMILLEN3120.0[m]DCMILLEN3129.0[m]DCMILLEN3138.0[m]DCMILLEN3147.0[m]DCMILLEN3156.0[m]DCMILLEN3165.0[m]DCMILLEN3174.0[m]DCMILLEN3183.0[m]DCMILLEN3195.0[m]DCMILLEN3204.0[m]DCMILLEN3213.0[m]DCMILLEN3222.0[m]DCMILLEN3231.0[m]DCMILLEN3240.0[m]DCMILLEN3249.0[m]DCMILLEN3258.0[m]DCMILLEN3267.0[m]DCMILLEN3276.0[m]DCMILLEN3285.0[m]DCMILLEN3294.0[m]DCMILLEN3303.0[m]DCMILLEN3312.0[m]DCMILLEN3321.0[m]DCMILLEN3330.0[m]DCMILLEN3339.0[m]DCMILLEN3348.0[m]DCMILLEN3357.0[m]DCMILLEN3366.0[m]DCMILLEN3375.0[m]DCMILLEN3384.0[m]DCMILLEN3393.0[m]DCMILLEN3402.0[m]DCMILLEN3411.0[m]DCMILLEN3420.0[m]DCMILLEN3429.0[m]DCMILLEN3438.0[m]DCMILLEN3447.0[m]DCMILLEN3456.0[m]DCMILLEN3465.0[m]DCMILLEN3474.0[m]DCMILLEN3483.0[m]DCMILLEN3492.0[m]DCMILLEN3501.0[m]DCMILLEN3510.0[m]DCMILLEN3519.0[m]DCMILLEN3528.0[m]DCMILLEN3537.0[m]DCMILLEN3546.0[m]DCMILLEN3555.0[m]DCMILLEN3564.0[m]DCMILLEN3573.0[m]DCMILLEN3582.0[m]DCMILLEN3591.0[m]DCMILLEN3600.0[m]DCMILLEN3615.0[m]DCMILLEN3630.0[m]DCMILLEN3645.0[m]DCMILLEN3660.0[m]DCMILLEN3675.0[m]DCMILLEN3690.0[m]DCMILLEN