33/9-16
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General information
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Wellbore history
GeneralExploration well 33/9-16 well is located 1.8 km south of the recently drilled 33/9-15 well. It is located just north of Statfjord East and south of Statfjord North in the southern part of License PL 172 updip from the 33/9-15 well and within the same seismically defined Intra Draupne deposits of Volgian age. The primary objective was to evaluate the hydrocarbon potential of the Late Jurassic (Volgian) Intra-Draupne Formation sandstone ("Munin sandstone unit") above the oil/water contact (2719 m subsea), found in the 33/9-15 well. The secondary objective was to evaluate the Middle Jurassic sands of the Brent Group.Operations and resultsWell 33/9-16 was spudded with the semi-submersible installation "Ross Isle" on 28 November 1992 and drilled to TD at 2870 m in the Middle Jurassic Ness Formation. The well was drilled water based with sea water and hi-vis pills down to 407 m, sea water and PHB/PAC from 407 m to 1106 m, and with KCl/PHPA/PHB/PAC mud from 1106 m to TD.In the Upper Jurassic, the Intra Draupne Formation Sandstone was found as sandstones interbedded with thin siltstones. A 4.3 m zone with oil shows was encountered in the uppermost part of this unit based on shows while drilling and MWD. Three cores were cut in the Draupne Formation. Except for the top meter, the entire Intra Draupne sandstone unit was cored. The top 4 m of the core consisted of a sandstone with good porosity and oil shows.In the Middle Jurassic Brent Group, no oil shows were observed in sandstones of the Tarbert and Ness Formations and as a result no cores were cut. An RFT and an MDT sample were taken at 2685 and 2684.5 m respectively and contained water and some gas but only traces of oil. A second MDT sample from 2713 m in the Intra Draupne Formation Sandstone contained water, slight traces of oil, and negligible gas. No wire line samples were taken in the Brent Group.The well was permanently abandoned as a dry hole with oil shows on 20 January 1993.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]410.002870.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom12681.02707.0[m ]22707.02734.2[m ]32734.22748.0[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]67.0Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Core photos
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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 typeCONDUCTOR30296.036296.00.00LOTINTERM.20402.026407.00.00LOTINTERM.13 3/81100.017 1/21106.00.00LOTINTERM.9 5/82172.012 1/42185.00.00LOTOPEN HOLE2870.08 1/22870.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CST GR21802865CST GR22102860DIT BHC GR AMS LSS11002020DIT BHC LDT CNT NGT GR BHT21742873DIT BHC LDT GR AMS11002186DLL MSFL GR21742870MDT GR26842713MWD - GR RES DIR2492870RFT GR26842863SHDT GR21742874VSP4002860 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit249104010731213125113041322166316631737184918781901191219122187262526492654265426622665268026832683268427482753281528152826 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.34 -
Geochemical information
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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]pdf71.56 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured3021.07WATER BASED3821.07WATER BASED4071.10WATER BASED6811.124.0WATER BASED11061.128.0WATER BASED12141.378.0WATER BASED15491.378.0WATER BASED18911.4949.0WATER BASED21851.5039.0WATER BASED22341.5024.0WATER BASED23451.5034.0WATER BASED25461.5034.0WATER BASED26811.5234.0WATER BASED27071.5234.0WATER BASED27751.5227.0WATER BASED28701.5231.0WATER BASED -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory410.0[m]DCMOBIL430.0[m]DCMOBIL450.0[m]DCMOBIL470.0[m]DCMOBIL490.0[m]DCMOBIL510.0[m]DCMOBIL530.0[m]DCMOBIL550.0[m]DCMOBIL570.0[m]DCMOBIL590.0[m]DCMOBIL610.0[m]DCMOBIL630.0[m]DCMOBIL650.0[m]DCMOBIL670.0[m]DCMOBIL690.0[m]DCMOBIL710.0[m]DCMOBIL730.0[m]DCMOBIL750.0[m]DCMOBIL770.0[m]DCMOBIL790.0[m]DCMOBIL810.0[m]DCMOBIL830.0[m]DCMOBIL850.0[m]DCMOBIL870.0[m]DCMOBIL890.0[m]DCMOBIL910.0[m]DCMOBIL930.0[m]DCMOBIL950.0[m]DCMOBIL970.0[m]DCMOBIL990.0[m]DCMOBIL1010.0[m]DCMOBIL1025.0[m]DCMOBIL1040.0[m]DCMOBIL1050.0[m]DCMOBIL1060.0[m]DCMOBIL1070.0[m]DCMOBIL1080.0[m]DCMOBIL1090.0[m]DCMOBIL1100.0[m]DCMOBIL1120.0[m]DCMOBIL1140.0[m]DCMOBIL1160.0[m]DCMOBIL1180.0[m]DCMOBIL1200.0[m]DCMOBIL1220.0[m]DCMOBIL1240.0[m]DCMOBIL1260.0[m]DCMOBIL1280.0[m]DCMOBIL1300.0[m]DCMOBIL1320.0[m]DCMOBIL1330.0[m]DCMOBIL1340.0[m]DCMOBIL1350.0[m]DCMOBIL1360.0[m]DCMOBIL1380.0[m]DCMOBIL1400.0[m]DCMOBIL1420.0[m]DCMOBIL1440.0[m]DCMOBIL1460.0[m]DCMOBIL1480.0[m]DCMOBIL1500.0[m]DCMOBIL1520.0[m]DCMOBIL1540.0[m]DCMOBIL1560.0[m]DCMOBIL1580.0[m]DCMOBIL1600.0[m]DCMOBIL1620.0[m]DCMOBIL1640.0[m]DCMOBIL1660.0[m]DCMOBIL1670.0[m]DCMOBIL1680.0[m]DCMOBIL1700.0[m]DCMOBIL1720.0[m]DCMOBIL1730.0[m]DCMOBIL1740.0[m]DCMOBIL1760.0[m]DCMOBIL1770.0[m]DCMOBIL1790.0[m]DCMOBIL1810.0[m]DCMOBIL1830.0[m]DCMOBIL1850.0[m]DCMOBIL1870.0[m]DCMOBIL1890.0[m]DCMOBIL1900.0[m]DCMOBIL1920.0[m]DCMOBIL1940.0[m]DCMOBIL1960.0[m]DCMOBIL1980.0[m]DCMOBIL2000.0[m]DCMOBIL2020.0[m]DCMOBIL2040.0[m]DCMOBIL2060.0[m]DCMOBIL2080.0[m]DCMOBIL2100.0[m]DCMOBIL2120.0[m]DCMOBIL2140.0[m]DCMOBIL2160.0[m]DCMOBIL2180.0[m]DCMOBIL2200.0[m]DCMOBIL2220.0[m]DCMOBIL2240.0[m]SWCMOBIL2270.0[m]DCMOBIL2280.0[m]DCMOBIL2300.0[m]DCMOBIL2320.0[m]DCMOBIL2340.0[m]DCMOBIL2350.0[m]DCMOBIL2380.0[m]SWCMOBIL2400.0[m]DCMOBIL2409.0[m]DCMOBIL2418.0[m]DCMOBIL2425.0[m]DCMOBIL2433.0[m]DCMOBIL2442.0[m]DCMOBIL2451.0[m]DCMOBIL2460.0[m]DCMOBIL2469.0[m]DCMOBIL2469.0[m]DCMOBIL2478.0[m]DCMOBIL2487.0[m]DCMOBIL2496.0[m]DCMOBIL2505.0[m]DCMOBIL2514.0[m]DCMOBIL2520.0[m]SWCMOBIL2529.0[m]DCMOBIL2538.0[m]DCMOBIL2544.0[m]DCMOBIL2550.0[m]DCMOBIL2559.0[m]DCMOBIL2568.0[m]DCMOBIL2577.0[m]DCMOBIL2583.0[m]DCMOBIL2590.0[m]DCMOBIL2598.0[m]DCMOBIL2605.0[m]SWCMOBIL2613.0[m]DCMOBIL2622.0[m]DCMOBIL2628.0[m]DCMOBIL2635.0[m]SWCMOBIL2643.0[m]DCMOBIL2649.0[m]DCMOBIL2655.0[m]DCMOBIL2664.0[m]SWCMOBIL2668.0[m]SWCMOBIL2676.0[m]DCMOBIL2681.0[m]CMOBIL2682.0[m]CMOBIL2683.0[m]SWCMOBIL2684.0[m]CMOBIL2685.0[m]DCMOBIL2686.0[m]CMOBIL2687.0[m]CMOBIL2690.0[m]CMOBIL2693.0[m]CMOBIL2695.0[m]CMOBIL2698.0[m]CMOBIL2700.0[m]CMOBIL2703.0[m]CMOBIL2705.0[m]CMOBIL2707.2[m]CMOBIL2709.0[m]CMOBIL2711.0[m]CMOBIL2714.0[m]CMOBIL2717.0[m]CMOBIL2720.0[m]CMOBIL2723.0[m]CMOBIL2725.0[m]CMOBIL2727.0[m]CMOBIL2727.0[m]DCMOBIL2729.0[m]CMOBIL2732.0[m]CMOBIL2734.0[m]CMOBIL2735.0[m]CMOBIL2737.0[m]CMOBIL2739.0[m]CMOBIL2741.0[m]CMOBIL2742.0[m]CMOBIL2745.0[m]CMOBIL2747.0[m]CMOBIL2748.5[m]CMOBIL2757.5[m]SWCMOBIL2765.0[m]SWCMOBIL2775.0[m]DCMOBIL2784.0[m]DCMOBIL2793.0[m]DCMOBIL2802.0[m]DCMOBIL2811.0[m]DCMOBIL2817.0[m]DCMOBIL2826.0[m]DCMOBIL2829.0[m]DCMOBIL2832.0[m]DCMOBIL2835.0[m]SWCMOBIL2838.0[m]DCMOBIL2841.0[m]DCMOBIL2844.0[m]DCMOBIL2847.0[m]DCMOBIL2850.0[m]SWCMOBIL2859.0[m]DCMOBIL2865.0[m]SWCMOBIL2865.0[m]DCMOBIL2870.0[m]DCMOBIL -
Thin sections at the Norwegian Offshore Directorate
Thin sections at the Norwegian Offshore Directorate DepthUnit2681.50[m ]2687.77[m ]2701.52[m ]2713.60[m ]2719.50[m ]2721.78[m ]2733.20[m ]2741.45[m ]2743.58[m ]