7219/9-1
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General information
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Wellbore history
GeneralWell 7219/9-1 is located in the Bjørnøya Sør area between the Veslemøy High and the Polheim Sub-platform. The main target in the well was the reservoir and hydrocarbon potential of Early-Middle Jurassic sandstones. Late Triassic sandstone of the Snadd Formation was a secondary target. The wildcat well should also provide good seismic tie and gain velocity information to enable more detailed mapping of the area. It should further provide maximum amounts of information on source, seal and reservoir intervals. The well was positioned to leave a minimum of untested reserves up-dip with respect to the primary objective.Operations and resultsWildcat well 7219/9-1 was spudded with the semi-submersible installation Polar Pioneer on 17 November 1987 and drilled to TD at 4300 m in the Triassic Snadd Formation. The hole was drilled without riser to the 20" casing depth. It was drilled to 1625 m without problems when loss of drilling mud occurred. The hole was stabilised, logged, sidewall cores were cut, and it was cemented. During cementing there were problems in the top hole with the BOP and permanent guide base. Upper part of the 30" section was cemented. Coring equipment did not get past dog leg at 2208 m. Attempts to open the hole were made but the equipment got stuck. Fishing was unsuccessful. A cement plug was set from 2185 m to 2004 m, and the hole was sidetracked at ca 2078 m. Further drilling to TD went without significant problems. The well was drilled with seawater and hi-vis pills down to 718 m and with KCl / polymer mud from 718 m to 2723 m. From 2723 m the KCl was allowed to deplete naturally and the well was drilled with a polymer mud to TD.Top reservoir, Stø Formation, was encountered from 1950.5 m to 2062 m with 99 m net sand of 17.8% average porosity. Nordmela Formation was penetrated from 2062 m to 2205.5 m with 59.5 m net sand with 16.5 % average porosity. The Tubåen Formation from 2205.5 m to 2305 m had 64.5 % net sand with 17.3% average porosity. Logs and RFT data indicated the reservoir to be water bearing with possible residual oil. Top Snadd Formation came in at 2876.5 m, approximately 372 m higher than prognosed. Logs and RFT tests indicated the sandstone zones to be water bearing.Shows were recorded in cuttings, sidewall cores and conventional cores in sandstones from 1855 m to 3040 m. The strongest shows were recorded on sandstone stringers in the intervals 1855 m to 1902 and in the more massive sandstones in the cored section from 1950 m to 2114 m.A total of ten cores were cut in the well. Cores 1-9 were cut in the first hole in the Jurassic Fuglen, Stø and Nordmela Formations in the interval 1922.5 - 2114.4 m. Core 10 was taken in the sidetrack hole in the Late Triassic, Fruholmen Formation from 2742.0 m to 2769.8 m. No fluid samples were taken in the well.The well was permanently abandoned 25 February 1988 as dry with residual hydrocarbons in Jurassic and Late Triassic sandstones.TestingNo drill stem test was performed -
Cuttings at the Norwegian Offshore Directorate
Cuttings at the Norwegian Offshore Directorate Cuttings available for sampling?NOCuttings at the Norwegian Offshore Directorate Cutting sample, top depth [m]Cutting samples, bottom depth [m]720.004300.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom11922.51929.5[m ]21930.01958.0[m ]31958.01984.9[m ]41984.91987.8[m ]51988.02015.8[m ]62015.92044.0[m ]72044.02071.7[m ]82071.72099.4[m ]92099.42114.0[m ]102742.02767.6[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]216.3Cores 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 typeCONDUCTOR30441.036443.00.00LOTSURF.COND.20701.026718.01.44LOTINTERM.13 3/81586.017 1/21625.01.60LOTINTERM.9 5/82701.012 1/42751.01.75LOTOPEN HOLE4300.08 1/24300.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]AMS15902179AMS15902708AMS27014151AMS41004303CBL VDL6001580CBL VDL14002680CST445705CST7121592CST16532694CST17252163CST27923834CST38404295DIL BHC SP GR441705DIL BHC SP GR7011596DIL BHC SP GR27014151DIL BHC SP GR41004301DIL LSS SP GR15902179DIL LSS SP GR19002710LDL CNL GR CAL441689LDL CNL GR CAL7011580LDL CNL GR CAL41004303LDL CNL NGT CAL15702180LDL CNL NGT CAL19002707LDL CNL NGT CAL27014145MSFL7011596MSFL19002710MSFL27014145MWD3793767RFT18562153RFT27494191SHDT GR7011596SHDT GR15902708SHDT GR27014153VSP7002705VSP16003944 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit37948348314681468183618931919195119512062220623052877 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.86 -
Geochemical information
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Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured3771.00WATER BASED25.02.19884291.03WATER BASED24.02.19884341.05WATER BASED19.11.19874411.06WATER BASED20.11.19874431.06WATER BASED23.11.19875941.05WATER BASED23.11.19877181.06WATER BASED25.11.19877181.06WATER BASED23.11.19877181.06WATER BASED24.11.19877181.0820.011.0WATER BASED26.11.19877551.1017.09.0WATER BASED27.11.198711091.1118.014.0WATER BASED30.11.198713921.1521.012.0WATER BASED30.11.198714201.2619.08.0WATER BASED23.02.198816251.1313.08.0WATER BASED01.12.198716251.2219.012.0WATER BASED30.11.198716251.1520.015.0WATER BASED02.12.198716251.1520.015.0WATER BASED03.12.198716251.1719.010.0WATER BASED04.12.198716251.1718.019.0WATER BASED07.12.198716251.1717.010.0WATER BASED07.12.198716251.1714.08.0WATER BASED08.12.198717911.1818.09.0WATER BASED09.12.198719071.2018.010.0WATER BASED10.12.198719231.2718.010.0WATER BASED11.12.198719311.2719.010.0WATER BASED14.12.198719581.2719.012.0WATER BASED14.12.198719851.2718.011.0WATER BASED14.12.198720041.3121.09.0WATER BASED08.01.198820151.2718.010.0WATER BASED15.12.198720421.2718.010.0WATER BASED16.12.198720581.3119.08.0WATER BASED08.01.198820641.3122.011.0WATER BASED05.01.198820641.3122.012.0WATER BASED06.01.198820721.2719.010.0WATER BASED17.12.198720981.3123.08.0WATER BASED11.01.198820991.2719.010.0WATER BASED18.12.198721141.2719.010.0WATER BASED21.12.198721391.3123.07.0WATER BASED11.01.198822101.2715.010.0WATER BASED21.12.198722271.3024.08.0WATER BASED11.01.198823021.2716.09.0WATER BASED21.12.198723451.2715.08.0WATER BASED22.12.198723471.3124.09.0WATER BASED12.01.198823981.3128.09.0WATER BASED13.01.198824201.2716.08.0WATER BASED23.12.198724441.2714.08.0WATER BASED28.12.198724531.2614.010.0WATER BASED28.12.198725031.3125.09.0WATER BASED14.01.198825571.2314.09.0WATER BASED28.12.198725951.2619.08.0WATER BASED22.02.198826041.3125.09.0WATER BASED15.01.198826571.2314.07.0WATER BASED28.12.198726921.3126.011.0WATER BASED18.01.198827201.3126.011.0WATER BASED18.01.198827231.3126.011.0WATER BASED19.01.198827231.1516.08.0WATER BASED22.01.198827231.3026.011.0WATER BASED20.01.198827351.2314.07.0WATER BASED28.12.198727511.2314.07.0WATER BASED29.12.198727511.2314.07.0WATER BASED30.12.198727511.2718.010.0WATER BASED04.01.198827511.2820.010.0WATER BASED04.01.198827511.3021.011.0WATER BASED04.01.198827511.2314.07.0WATER BASED04.01.198827561.1616.07.0WATER BASED22.01.198828101.1614.06.0WATER BASED25.01.198829331.1512.06.0WATER BASED25.01.198829961.1515.07.0WATER BASED25.01.198831181.1612.06.0WATER BASED26.01.198831681.1615.06.0WATER BASED27.01.198832631.1514.06.0WATER BASED28.01.198833421.1516.06.0WATER BASED01.02.198833871.1516.06.0WATER BASED01.02.198834051.1515.06.0WATER BASED01.02.198834851.1514.06.0WATER BASED01.02.198835121.1514.05.0WATER BASED02.02.198835851.1516.06.0WATER BASED03.02.198836131.1716.06.0WATER BASED04.02.198836771.1717.06.0WATER BASED05.02.198837081.1716.06.0WATER BASED08.02.198837541.1715.06.0WATER BASED08.02.198837861.1714.06.0WATER BASED08.02.198838801.1914.06.0WATER BASED09.02.198839411.1915.06.0WATER BASED10.02.198839431.1914.06.0WATER BASED11.02.198839911.2014.06.0WATER BASED12.02.198840441.2013.06.0WATER BASED15.02.198841071.2014.06.0WATER BASED15.02.198841501.2014.07.0WATER BASED15.02.198841501.2014.07.0WATER BASED16.02.198842181.2013.07.0WATER BASED17.02.198842241.2013.06.0WATER BASED18.02.198842781.2519.09.0WATER BASED19.02.198843001.2518.09.0WATER BASED22.02.198843001.2519.08.0WATER BASED22.02.1988 -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory445.0[m]SWCHYDRO457.0[m]SWCHYDRO460.0[m]SWCHYDRO480.0[m]SWCHYDRO484.5[m]SWCHYDRO490.0[m]SWCHYDRO523.0[m]SWCHYDRO564.0[m]SWCHYDRO605.0[m]SWCHYDRO663.5[m]SWCHYDRO685.0[m]SWCHYDRO705.0[m]SWCHYDRO712.0[m]SWCHYDRO720.0[m]DCGEARH740.0[m]DCGEARH760.0[m]SWCHYDRO760.0[m]DCGEARH780.0[m]DCGEARH783.5[m]SWCHYDRO800.0[m]DCGEARH820.0[m]DCGEARH835.0[m]SWCHYDRO835.0[m]DCGEARH855.0[m]DCGEARH875.0[m]DCGEARH895.0[m]DCGEARH915.0[m]DCGEARH935.0[m]SWCHYDRO935.0[m]DCGEARH955.0[m]DCGEARH975.0[m]DCGEARH995.0[m]DCGEARH1015.0[m]DCGEARH1035.0[m]DCGEARH1048.0[m]SWCHYDRO1055.0[m]DCGEARH1075.0[m]DCGEARH1095.0[m]DCGEARH1115.0[m]DCGEARH1135.0[m]DCGEARH1155.0[m]DCGEARH1175.0[m]DCGEARH1190.0[m]DCGEARH1210.0[m]DCGEARH1230.0[m]DCGEARH1250.0[m]DCGEARH1259.0[m]SWCHYDRO1270.0[m]DCGEARH1290.0[m]DCGEARH1296.0[m]SWCHYDRO1310.0[m]DCGEARH1316.0[m]SWCHYDRO1330.0[m]DCGEARH1336.5[m]SWCHYDRO1350.0[m]DCGEARH1370.0[m]DCGEARH1390.0[m]DCGEARH1410.0[m]DCGEARH1423.0[m]SWCHYDRO1430.0[m]DCGEARH1438.0[m]SWCHYDRO1450.0[m]DCGEARH1466.0[m]SWCHYDRO1467.0[m]SWCHYDRO1468.0[m]SWCHYDRO1470.0[m]SWCHYDRO1470.0[m]DCGEARH1490.0[m]DCGEARH1494.7[m]SWCHYDRO1503.0[m]SWCHYDRO1510.0[m]DCGEARH1530.0[m]DCGEARH1535.0[m]SWCHYDRO1550.0[m]DCGEARH1558.0[m]SWCHYDRO1570.0[m]SWCHYDRO1570.0[m]DCGEARH1590.0[m]DCGEARH1592.0[m]SWCHYDRO1610.0[m]DCGEARH1620.0[m]DCGEARH1625.0[m]DCGEARH1670.0[m]DCGEARH1692.5[m]SWCHYDRO1725.0[m]SWCHYDRO1730.0[m]DCGEARH1740.0[m]SWCHYDRO1750.0[m]DCGEARH1770.0[m]DCGEARH1775.0[m]SWCHYDRO1790.0[m]DCGEARH1793.5[m]SWCHYDRO1800.0[m]DCOD1810.0[m]SWCHYDRO1810.0[m]DCGEARH1830.0[m]DCOD1831.0[m]SWCHYDRO1835.0[m]SWCHYDRO1839.5[m]SWCHYDRO1840.0[m]DCOD1845.0[m]SWCHYDRO1848.0[m]SWCHYDRO1850.0[m]DCOD1850.5[m]SWCHYDRO1853.0[m]SWCHYDRO1855.0[m]SWCHYDRO1857.0[m]DCOD1860.0[m]SWCHYDRO1865.0[m]SWCHYDRO1865.0[m]DCOD1869.0[m]SWCHYDRO1872.0[m]DCOD1875.0[m]SWCHYDRO1880.0[m]SWCHYDRO1880.0[m]DCOD1885.0[m]SWCHYDRO1890.0[m]SWCHYDRO1890.0[m]DCOD1895.0[m]DCOD1897.0[m]SWCHYDRO1900.0[m]DCOD1901.0[m]SWCHYDRO1907.0[m]SWCHYDRO1907.0[m]DCOD1909.0[m]SWCHYDRO1915.0[m]DCOD1917.0[m]SWCHYDRO1920.0[m]SWCHYDRO1920.0[m]DCOD1922.5[m]COD1922.6[m]CHYDRO1927.6[m]COD1929.4[m]CHYDRO1932.5[m]COD1935.2[m]CHYDRO1940.3[m]CHYDRO1941.8[m]COD1945.0[m]CHYDRO1945.8[m]COD1947.3[m]COD1948.2[m]COD1949.0[m]CGEARH1949.5[m]COD1949.5[m]CHYDRO1950.1[m]CHYDRO1950.9[m]COD1954.9[m]COD1958.2[m]CHYDRO1958.2[m]COD1958.4[m]CHYDRO1962.4[m]COD1969.0[m]CGEARH1979.0[m]CGEARH1990.0[m]CGEARH1991.6[m]COD2005.7[m]COD2008.6[m]CHYDRO2010.0[m]CGEARH2020.0[m]CGEARH2023.9[m]COD2030.0[m]CGEARH2036.6[m]COD2036.6[m]CHYDRO2040.0[m]CGEARH2042.8[m]COD2047.5[m]COD2050.0[m]CGEARH2053.7[m]COD2057.6[m]CHYDRO2059.0[m]CGEARH2061.5[m]CHYDRO2069.8[m]COD2070.0[m]CGEARH2080.0[m]CGEARH2080.4[m]COD2090.0[m]CGEARH2092.7[m]CHYDRO2100.0[m]CGEARH2101.0[m]COD2108.5[m]COD2108.8[m]CGEARH2113.5[m]CHYDRO2120.0[m]DCOD2125.0[m]DCGEARH2130.0[m]SWCHYDRO2130.0[m]DCOD2135.0[m]SWCHYDRO2137.0[m]DCGEARH2140.0[m]DCOD2140.5[m]SWCHYDRO2147.0[m]DCGEARH2150.0[m]DCOD2157.0[m]SWCHYDRO2157.0[m]DCGEARH2158.0[m]SWCHYDRO2160.0[m]DCOD2167.0[m]DCGEARH2170.0[m]DCOD2177.0[m]DCGEARH2180.0[m]SWCHYDRO2180.0[m]DCOD2185.0[m]DCGEARH2190.0[m]DCOD2197.0[m]DCGEARH2200.0[m]DCOD2203.5[m]SWCHYDRO2210.0[m]DCOD2220.0[m]DCOD2230.0[m]DCOD2230.5[m]SWCHYDRO2240.0[m]DCOD2250.0[m]DCOD2255.0[m]SWCHYDRO2260.0[m]DCOD2275.0[m]SWCHYDRO2335.5[m]SWCHYDRO2352.0[m]SWCHYDRO2360.0[m]SWCHYDRO2462.0[m]SWCHYDRO2487.0[m]SWCHYDRO2507.0[m]SWCHYDRO2542.5[m]SWCHYDRO2575.0[m]SWCHYDRO2647.5[m]SWCHYDRO2676.0[m]SWCHYDRO2694.5[m]SWCHYDRO2720.0[m]DCOD2750.0[m]DCOD2762.0[m]CHYDRO2763.0[m]CHYDRO2764.0[m]CHYDRO2765.0[m]CHYDRO2792.0[m]SWCHYDRO2821.5[m]SWCHYDRO2852.0[m]SWCHYDRO2886.0[m]SWCHYDRO2954.0[m]SWCHYDRO3007.0[m]SWCHYDRO3037.5[m]SWCHYDRO3085.5[m]SWCHYDRO3208.5[m]SWCHYDRO3292.0[m]SWCHYDRO3341.5[m]SWCHYDRO3490.5[m]SWCHYDRO3652.0[m]SWCHYDRO3821.0[m]SWCHYDRO3840.0[m]SWCHYDRO3971.0[m]SWCHYDRO4033.5[m]SWCHYDRO4135.0[m]SWCHYDRO4193.0[m]SWCHYDRO4239.0[m]SWCHYDRO4295.3[m]SWCHYDRO -
Thin sections at the Norwegian Offshore Directorate
Thin sections at the Norwegian Offshore Directorate DepthUnit2109.50[m ]2090.60[m ]2078.50[m ]2037.70[m ]2018.50[m ]2010.60[m ]1967.25[m ]1963.25[m ]1955.00[m ]