25/2-16 S
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General information
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Wellbore history
GeneralExploration well 25/2-16 S is located ca 3 km southwest off the 25/2-5 Lille Frøy Discovery. It was aimed at a down faulted, rotated block with the reservoir being primarily in the Hugin Formation in the Middle Jurassic Vestland Group - the "Godzilla" prospect. The structure is situated on the hanging wall Southwest of the Rind Horst in blocks 25/2 and 25/5.The main objectives of the well were to prove an HC-water contact and sufficient HC volumes to be able to initiate a development.Operations and resultsThe well 25/2-16 S was spudded with the semi-submersible installation "Transocean Arctic" on 3 August 2001. Because of hole problems at 3088 m the hole was cemented and plugged back to 1850 m and side tracked. The well was drilled with seawater and bentonite down to 1160 m and with "VERSAVERT" oil based mud from 1160 m to 3088 m. The technical sidetrack, 25/2-16 S T2, was kicked off on 23 August 2001 at 1915 m and was drilled to TD at 4013 m in the Dunlin Group. The sidetrack was drilled with "VERSAVERT" oil based mud from kick off to final TD. No mobile hydrocarbons were encountered in the Hugin or Sleipner Formations though log analysis indicated that residual quantities of hydrocarbons might be present. Pressure measurements in the Hugin and Sleipner Formations indicate that there exist pressure barriers internally in the reservoir section. No core was cut in this well and no fluid samples taken. The well was permanently abandoned as a dry well 13 September 2001.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]1117.003070.00 -
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 typeCONDUCTOR30223.036223.00.00LOTSURF.COND.13 3/81151.017 1/21155.01.54LOTINTERM.9 5/83179.012 1/43185.01.84LOTOPEN HOLE4013.08 1/24013.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]GR MDT27963969GR VSP CSAT23654000MWD139223MWD - VISION ADN ISONIC31854013MWD CDR - APWD2233088MWD CDR - APWD19152912MWD CDR - APWD29123185 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit13944046510351052106522272227224323302364240424452475253825502596260326362706273528682878289829072909290931303488363136403693369337093711371137553796379639213970 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.37 -
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].PDF4.19.PDF2.87 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured1600.00OIL BASED2231.398.0WATER BASED2251.3920.0WATER BASED6341.03WATER BASED11601.03WATER BASED17901.2537.0OIL BASED21011.2532.0OIL BASED26351.3153.0OIL BASED27301.2533.0OIL BASED28371.2534.0OIL BASED28601.4953.0OIL BASED29241.2538.0OIL BASED29831.2537.0OIL BASED29951.3346.0OIL BASED30561.2536.0OIL BASED30681.5066.0OIL BASED30891.2539.0OIL BASED30891.2537.0OIL BASED31851.4152.0OIL BASED32691.4948.0OIL BASED38411.5046.0OIL BASED40131.5056.0OIL BASED -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1605.0[m]DCGEOSTR1635.0[m]DCGEOSTR1665.0[m]DCGEOSTR1695.0[m]DCGEOSTR1725.0[m]DCGEOSTR1755.0[m]DCGEOSTR1785.0[m]DCGEOSTR1815.0[m]DCGEOSTR2340.0[m]DCGEOSTR2350.0[m]DCGEOSTR2360.0[m]DCGEOSTR2370.0[m]DCGEOSTR2380.0[m]DCGEOSTR2390.0[m]DCGEOSTR2400.0[m]DCGEOSTR2410.0[m]DCGEOSTR2420.0[m]DCGEOSTR2430.0[m]DCGEOSTR2440.0[m]DCGEOSTR2450.0[m]DCGEOSTR2460.0[m]DCGEOSTR2470.0[m]DCGEOSTR2480.0[m]DCGEOSTR2490.0[m]DCGEOSTR2500.0[m]DCGEOSTR2510.0[m]DCGEOSTR2520.0[m]DCGEOSTR2530.0[m]DCGEOSTR2540.0[m]DCGEOSTR2550.0[m]DCGEOSTR2560.0[m]DCGEOSTR2570.0[m]DCGEOSTR2580.0[m]DCGEOSTR2590.0[m]DCGEOSTR2600.0[m]DCGEOSTR2610.0[m]DCGEOSTR2620.0[m]DCGEOSTR2630.0[m]DCGEOSTR2640.0[m]DCGEOSTR2650.0[m]DCGEOSTR2660.0[m]DCGEOSTR2670.0[m]DCGEOSTR2680.0[m]DCGEOSTR2690.0[m]DCGEOSTR2700.0[m]DCGEOSTR2710.0[m]DCGEOSTR2720.0[m]DCGEOSTR2730.0[m]DCGEOSTR2740.0[m]DCGEOSTR2750.0[m]DCGEOSTR2760.0[m]DCGEOSTR2770.0[m]DCGEOSTR2780.0[m]DCGEOSTR2790.0[m]DCGEOSTR2800.0[m]DCGEOSTR2810.0[m]DCGEOSTR2820.0[m]DCGEOSTR2830.0[m]DCGEOSTR2840.0[m]DCGEOSTR2850.0[m]DCGEOSTR2860.0[m]DCGEOSTR2870.0[m]DCGEOSTR2880.0[m]DCGEOSTR2890.0[m]DCGEOSTR2900.0[m]DCGEOSTR2910.0[m]DCGEOSTR2920.0[m]DCGEOSTR2950.0[m]DCGEOSTR2980.0[m]DCGEOSTR3010.0[m]DCGEOSTR3040.0[m]DCGEOSTR3070.0[m]DCGEOSTR3105.0[m]DCGEOSTR3135.0[m]DCGEOSTR3150.0[m]DCGEOSTR3165.0[m]DCGEOSTR3195.0[m]DCGEOSTR3225.0[m]DCGEOSTR3255.0[m]DCGEOSTR3285.0[m]DCGEOSTR3315.0[m]DCGEOSTR3345.0[m]DCGEOSTR3375.0[m]DCGEOSTR3405.0[m]DCGEOSTR3435.0[m]DCGEOSTR3465.0[m]DCGEOSTR3495.0[m]DCGEOSTR3525.0[m]DCGEOSTR3555.0[m]DCGEOSTR3585.0[m]DCGEOSTR3615.0[m]DCGEOSTR3645.0[m]DCGEOSTR3675.0[m]DCGEOSTR3690.0[m]DCGEOSTR3705.0[m]DCGEOSTR3720.0[m]DCGEOSTR3735.0[m]DCGEOSTR3750.0[m]DCGEOSTR3765.0[m]DCGEOSTR3780.0[m]DCGEOSTR3795.0[m]DCGEOSTR3801.0[m]DCGEOSTR3807.0[m]DCGEOSTR3810.0[m]DCGEOSTR3816.0[m]DCGEOSTR3819.0[m]DCGEOSTR3825.0[m]DCGEOSTR3831.0[m]DCGEOSTR3837.0[m]DCGEOSTR3843.0[m]DCGEOSTR3849.0[m]DCGEOSTR3855.0[m]DCGEOSTR3861.0[m]DCGEOSTR3867.0[m]DCGEOSTR3870.0[m]DCGEOSTR3876.0[m]DCGEOSTR3882.0[m]DCGEOSTR3885.0[m]DCGEOSTR3891.0[m]DCGEOSTR3897.0[m]DCGEOSTR3900.0[m]DCGEOSTR3906.0[m]DCGEOSTR3912.0[m]DCGEOSTR3915.0[m]DCGEOSTR3921.0[m]DCGEOSTR3927.0[m]DCGEOSTR3930.0[m]DCGEOSTR3936.0[m]DCGEOSTR3942.0[m]DCGEOSTR3945.0[m]DCGEOSTR3951.0[m]DCGEOSTR3957.0[m]DCGEOSTR3960.0[m]DCGEOSTR3966.0[m]DCGEOSTR3972.0[m]DCGEOSTR3975.0[m]DCGEOSTR3981.0[m]DCGEOSTR3987.0[m]DCGEOSTR3990.0[m]DCGEOSTR3996.0[m]DCGEOSTR4002.0[m]DCGEOSTR4005.0[m]DCGEOSTR4011.0[m]DCGEOSTR4013.0[m]DCGEOSTR