6506/12-9 S
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General information
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Wellbore history
GeneralThe main objective of well 6506/12-9 S was to appraise the oil and gas potential within the Ile and Tilje Formations.Operations and resultsAppraisal well 6506/12-9 S was spudded 5 April 1993 with the semi-submersible installation "Ross Isle" and drilled to a total depth of 4910 m driller's depth (4903 m TVD), 4915.2 m loggers depth (4908.2 m TVD), into rocks of Early Jurassic age. Oil and gas was encountered in the Early to Middle Jurassic Båt and Fangst Groups. The well was drilled with seawater and hi-vis pills down to 802 m, Gyp/PAC mud from 802 m to 2242 m, Anco 2000 with glycols (Anco 208) from 2242 to 4378 m, and with Ancotherm mud from 4378 to TD. A total of 13 cores were cut in this well. Two were cut in the Paleocene Tang formation but these only 0,35m was recoverd(1%)The other 11 cores were cut in the interval 4415 m to 4846.9 m in the Båt and Fangst Groups. Recoveries for these were from 65 to 100%. Three FMT samples were taken in the Tilje Formation. The well was abandoned as an oil and gas appraisal on 11 September 1993.TestingFive production tests were performed in the Jurassic sandstone section. Drill stem test no 1 in the Åre formation in the interval 4846.0 to 4876 m produced a near-critical gas condensate. The well production was 444 000 Sm3/day of gas and 840 Sm3/day of condensate through a 44/64" (17,46 mm) choke size. Density of the gas was 0.832 (air = 1) and condensate density was 0.814 g/cm3. Drill stem test no 2 tested the Tilje formation in the interval 4805.0 to 4834 m, and it produced a light oil. The well production was 249 000 Sm3/day of gas and 900 Sm3/day of oil through a 56/64" (22,23 mm) choke size. Density of the gas was 0.832 (air = 1) and condensate density was 0.855 g/cm3. Drill stem test no 3 tested the Tilje formation in the interval 4742.0 to 4751.0 m, and it produced a light oil. The well production was 138 000 Sm3/day of gas and 567 Sm3/day of oil through a 44/64" (17.46 mm) choke size. Density of the gas was 0.794 (air = 1) and oil density was 0.825 g/cm3. Drill stem test no 4 perforated two zones in Tilje Formation. First the interval 4712 to 4730 m was perforated. No production was observed from this interval. The zone 4695 to 4709 m was then perforated. Just a minor influx into the well was observed. The rate measured was approximately 60 liter/hrs. Drill stem test no 5 tested the Ile formation in the interval 4477.0 to 4510.0 m, and produced gas condensate. The well production was 33 000 Sm3/day of gas and 17 Sm3/day of condensate through a 110/64" (43.66 mm) choke size. Density of the gas was 0.781 (air = 1) and condensate density was 0.807 g/cm3. -
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]810.004910.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom14415.04434.2[m ]24462.04489.7[m ]34489.74515.0[m ]44598.04634.9[m ]54635.04654.5[m ]64671.54703.0[m ]74703.34741.0[m ]84741.14778.0[m ]94779.04815.3[m ]104815.34825.0[m ]114830.04846.9[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]297.7Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Core photos
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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 availableDSTDST50.000.00OIL29.08.1993 - 18:00YES -
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 typeCONDUCTOR30378.036378.00.00LOTINTERM.20790.026790.01.52LOTINTERM.13 3/82228.017 1/22230.01.89LOTINTERM.9 5/84363.012 1/44365.01.87LOTLINER74910.08 1/24910.00.00LOT -
Drill stem tests (DST)
Drill stem tests (DST) Test numberFrom depth MD
[m]To depth MD
[m]Choke size
[mm]1.04846487617.52.04805483422.23.04742475117.54.0473047120.05.04477451043.6Drill stem tests (DST) Test numberFinal shut-in pressure
[MPa]Final flow pressure
[MPa]Bottom hole pressure
[MPa]Downhole temperature
[°C]1.02.01633.01644.05.0Drill stem tests (DST) Test numberOil
[Sm3/day]Gas
[Sm3/day]Oil density
[g/cm3]Gas grav. rel.airGOR
[m3/m3]1.08404440000.8150.8327492.09002490000.8500.8303903.05671380000.8250.7942924.05.017330000.8070.7811379 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CBL VDL GR12002229CBL VDL GR32054892COREGUN33214904DIFL AC CHT GR22294914DIP GR22352460DIP GR43654914DLL MLL SP GR43654914FMT CHT GR33343845FMT GR43904886MWD3874910VSP18804903ZDL CN SL22294914 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit317145819031903221822182307237023702530278033443344338341284169416941974379437944364464453345334601466046724837 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.63 -
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]pdf54.33 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured6061.03WATER BASED8081.0312.0WATER BASED10501.2515.0WATER BASED14911.2519.0WATER BASED16401.2520.0WATER BASED19821.3921.0WATER BASED22101.5024.0WATER BASED22421.5225.0WATER BASED23231.7028.0WATER BASED23571.7031.0WATER BASED24151.7028.0WATER BASED27291.7025.0WATER BASED28841.7027.0WATER BASED29651.7028.0WATER BASED30571.7030.0WATER BASED30771.7030.0WATER BASED31461.7029.0WATER BASED32221.7032.0WATER BASED32271.7032.0WATER BASED32521.7031.0WATER BASED33111.7032.0WATER BASED33561.7031.0WATER BASED33571.7030.0WATER BASED34051.7027.0WATER BASED34091.7025.0WATER BASED34341.7025.0WATER BASED34921.7036.0WATER BASED35351.7035.0WATER BASED35781.7035.0WATER BASED36401.7034.0WATER BASED36991.7035.0WATER BASED37631.7028.0WATER BASED38261.7528.0WATER BASED38851.7532.0WATER BASED39271.7530.0WATER BASED39951.7530.0WATER BASED40001.7530.0WATER BASED40641.7529.0WATER BASED41301.7530.0WATER BASED41951.7530.0WATER BASED42581.7536.0WATER BASED43141.7534.0WATER BASED43631.2023.0DUMMY43631.2014.0WATER BASED43751.7536.0WATER BASED43781.7531.0WATER BASED44151.2020.0WATER BASED44381.2016.0WATER BASED44621.2014.0WATER BASED44771.2328.0WATER BASED44901.2017.0WATER BASED45161.2017.0WATER BASED45981.2015.0WATER BASED46351.2017.0WATER BASED46691.2019.0WATER BASED47031.2021.0WATER BASED47411.2019.0WATER BASED47421.1224.0WATER BASED47651.2024.0DUMMY48051.2016.0DUMMY48051.1224.0WATER BASED48051.12WATER BASED48141.2050.0DUMMY48461.14WATER BASED48501.2023.0DUMMY49101.14WATER BASED -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory1910.0[m]DCRRI1930.0[m]DCRRI1950.0[m]DCRRI1970.0[m]DCRRI1990.0[m]DCRRI2010.0[m]DCRRI2030.0[m]DCRRI2050.0[m]DCRRI2070.0[m]DCRRI2090.0[m]DCRRI2110.0[m]DCRRI2130.0[m]DCRRI2150.0[m]DCRRI2170.0[m]DCRRI2190.0[m]DCRRI2210.0[m]DCRRI2230.0[m]DCRRI2250.0[m]DCRRI2270.0[m]DCRRI2290.0[m]DCRRI2310.0[m]DCRRI2330.0[m]DCRRI2350.0[m]DCRRI2370.0[m]DCRRI2390.0[m]DCRRI2410.0[m]DCRRI2430.0[m]DCRRI2450.0[m]DCRRI2470.0[m]DCRRI2490.0[m]DCRRI2510.0[m]DCRRI2530.0[m]DCRRI2550.0[m]DCRRI2570.0[m]DCRRI2590.0[m]DCRRI2610.0[m]DCRRI2630.0[m]DCRRI2650.0[m]DCRRI2670.0[m]DCRRI2690.0[m]DCRRI2710.0[m]DCRRI2730.0[m]DCRRI2750.0[m]DCRRI2770.0[m]DCRRI2790.0[m]DCRRI2810.0[m]DCRRI2830.0[m]DCRRI2850.0[m]DCRRI2870.0[m]DCRRI2890.0[m]DCRRI2910.0[m]DCRRI2930.0[m]DCRRI2950.0[m]DCRRI2970.0[m]DCRRI2990.0[m]DCRRI3010.0[m]DCRRI3030.0[m]DCRRI3070.0[m]DCRRI3090.0[m]DCRRI3110.0[m]DCRRI3130.0[m]DCRRI3150.0[m]DCRRI3170.0[m]DCRRI3190.0[m]DCRRI3210.0[m]DCRRI3230.0[m]DCRRI3250.0[m]DCRRI3271.0[m]DCRRI3289.0[m]DCRRI3310.0[m]DCRRI3321.0[m]SWCSTATO3332.5[m]SWCSTATO3350.0[m]SWCSTATO3373.0[m]SWCSTATO3391.0[m]DCRRI3421.0[m]DCSTATO3440.0[m]DCRRI3460.0[m]DCRRI3480.0[m]DCRRI3500.0[m]DCRRI3520.0[m]DCRRI3540.0[m]DCRRI3560.0[m]DCRRI3580.0[m]DCRRI3600.0[m]DCRRI3620.0[m]DCRRI3640.0[m]DCRRI3660.0[m]DCRRI3700.0[m]DCRRI3720.0[m]DCRRI3740.0[m]DCRRI3760.0[m]DCRRI3807.0[m]SWCSTATO3837.0[m]SWCSTATO3860.0[m]DCRRI3880.0[m]DCRRI3896.0[m]SWCSTATO3909.0[m]SWCSTATO3960.0[m]DCRRI4000.0[m]DCRRI4020.0[m]DCRRI4040.0[m]DCRRI4060.0[m]DCRRI4130.0[m]SWCSTATO4137.5[m]SWCSTATO4171.0[m]SWCSTATO4185.0[m]SWCSTATO4193.0[m]SWCSTATO4198.0[m]SWCSTATO4207.5[m]SWCSTATO4370.0[m]DCRRI4374.0[m]SWCSTATO4377.0[m]SWCSTATO4378.0[m]DCRRI4388.0[m]DCRRI4412.0[m]DCRRI4416.5[m]CRRI4419.3[m]CRRI4426.8[m]CRRI4432.0[m]CRRI4433.3[m]CRRI4443.0[m]SWCSTATO4451.0[m]DCRRI4454.0[m]SWCSTATO4459.0[m]SWCSTATO4461.0[m]SWCSTATO4462.2[m]CRRI4466.8[m]CRRI4469.1[m]CRRI4472.7[m]CRRI4478.7[m]CRRI4484.9[m]CRRI4491.8[m]CRRI4497.3[m]CRRI4500.2[m]CRRI4503.3[m]CRRI4506.7[m]CRRI4508.7[m]CRRI4511.9[m]CRRI4525.0[m]SWCSTATO4535.0[m]SWCSTATO4537.0[m]SWCSTATO4545.0[m]SWCSTATO4559.6[m]SWCSTATO4573.0[m]SWCSTATO4583.0[m]SWCSTATO4589.5[m]SWCSTATO4596.0[m]SWCSTATO4598.9[m]CRRI4607.3[m]CRRI4627.2[m]CRRI4638.6[m]CRRI4643.1[m]CRRI4646.7[m]CRRI4650.0[m]CRRI4654.3[m]CRRI4660.5[m]SWCSTATO4664.0[m]SWCSTATO4668.0[m]SWCSTATO4671.6[m]CRRI4678.0[m]CRRI4681.6[m]CRRI4684.0[m]CRRI4690.9[m]CRRI4691.9[m]CRRI4696.1[m]CRRI4696.8[m]CRRI4699.6[m]CRRI4701.6[m]CRRI4708.1[m]CRRI4708.7[m]CRRI4712.7[m]CRRI4716.4[m]CRRI4719.8[m]CRRI4723.4[m]CRRI4728.0[m]CRRI4729.0[m]CRRI4731.4[m]CRRI4734.6[m]CRRI4737.1[m]CRRI4737.5[m]CRRI4741.8[m]CRRI4744.4[m]CRRI4748.7[m]CRRI4752.1[m]CRRI4755.8[m]CRRI4758.2[m]CRRI4759.7[m]CRRI4763.4[m]CRRI4766.6[m]CRRI4768.5[m]CRRI4772.8[m]CRRI4776.6[m]CRRI4780.1[m]CRRI4783.0[m]CRRI4810.0[m]CRRI4812.4[m]CRRI4815.0[m]CRRI4819.6[m]CRRI4823.3[m]CRRI4830.8[m]CRRI4837.6[m]CRRI4841.3[m]CRRI4845.2[m]CRRI4855.0[m]SWCSTATO4861.3[m]SWCSTATO4864.0[m]SWCSTATO4884.0[m]SWCSTATO4889.5[m]SWCSTATO4895.3[m]SWCSTATO4904.0[m]SWCSTATO4910.0[m]DCRRI