7319/12-1
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General information
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Wellbore history
GeneralWell 7319/12-1 was drilled to test the Pingvin prospect on the Bjørnøya Basin in the Barents Sea. The primary objective was to prove commercial volumes of hydrocarbons in the Lower Tertiary/Upper Cretaceous Sandstone reservoir and to test the observed flatspot in the structure.Operations and resultsWildcat well 7319/12-1 was spudded with the semi-submersible installation Transocean Spitsbergen on 19 August 2014 and drilled to TD at 1540 m in the Late Cretaceous Kolmule Formation. No significant problem was encountered in the operations. The well was drilled with seawater and hi-vis sweeps down to 936 m and with KCl/polymer/GEM mud from 936 m to TD.The well penetrated Tertiary claystones and sandstones as well as Cretaceous claystones, limestones and sandstones. Gas was encountered in the Paleocene reservoir sandstones in the Torsk Formation. Top of reservoir was encountered at 953 m and the gas-water contact was at 967 m. The GWC corresponds to the flatspot at 1028 ms in the seismic. Shows in the cored interval (965 to 984 m) were described as "Faint to moderate Petroleum odour, yellowish white direct Fluorescence, slow streaming bluish white cut Fluorescence, white residual ring". Thin stringers with low GR and increased resistivity reading observed between 988 m to 1200 m could also indicate hydrocarbon bearing sandstones.Three cores with a total recovery of 17.61 m were cut in the interval 965.5 to 988.1 m. Fluid samples were taken at 961.9 m (gas), 973.2 m (water), and 976.3 m (water).The well was permanently abandoned on 22 September 2014 as a technical gas discovery.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]940.001540.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom1965.5970.9[m ]2972.0980.2[m ]3984.0988.1[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]17.6Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory943.0[m]DCROBERTSO946.0[m]DCROBERT949.0[m]DCROBERT952.0[m]DCROBERT955.0[m]DCROBERT958.0[m]DCROBERT961.0[m]DCROBERT964.0[m]DCROBERT966.4[m]CROBERT967.0[m]DCROBERT969.8[m]CROBERT973.4[m]CROBERT976.5[m]CROBERT979.1[m]CROBERT984.6[m]CROBERT988.0[m]CROBERT991.0[m]DCROBERT994.0[m]DCROBERT997.0[m]DCROBERT997.8[m]SWCROBERT1000.0[m]DCROBERT1003.0[m]DCROBERT1006.0[m]DCROBERT1009.0[m]DCROBERT1015.0[m]DCROBERT1021.0[m]DCROBERT1027.0[m]DCROBERT1033.0[m]DCROBERT1039.0[m]DCROBERT1045.0[m]DCROBERT1051.0[m]DCROBERT1063.0[m]DCROBERT1075.0[m]DCROBERT1087.0[m]DCROBERT1099.0[m]DCROBERT1099.5[m]SWCROBERT1111.0[m]DCROBERT1123.0[m]DCROBERT1135.0[m]DCROBERT1147.0[m]DCROBERT1159.0[m]DCROBERT1167.0[m]DCROBERT1171.0[m]DCROBERT1183.0[m]DCROBERT1190.9[m]SWCROBERT1195.0[m]DCROBERT1207.0[m]DCROBERT1208.5[m]SWCROBERT1215.0[m]SWCROBERT1219.0[m]DCROBERT1231.0[m]DCROBERT1243.0[m]DCROBERT1255.0[m]DCROBERT1279.0[m]DCROBERT1291.0[m]DCROBERT1303.0[m]DCROBERT1320.0[m]DCROBERT1330.0[m]DCROBERT1340.0[m]DCROBERT1350.0[m]DCROBERT1370.0[m]DCROBERT1380.0[m]DCROBERT1390.0[m]DCROBERT1400.0[m]DCROBERT1420.0[m]DCROBERT1430.0[m]DCROBERT1440.0[m]DCROBERT1460.0[m]DCROBERT1470.0[m]DCROBERT1490.0[m]DCROBERT1500.0[m]DCROBERT1510.0[m]DCROBERT1520.0[m]DCROBERT1530.0[m]DCROBERT1540.0[m]DCROBERT -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit46246248048098898813851385 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]MDT CMR GR9271159MSCT GR9501215MSCT GR10991208MSIP HRLA PEX ECS HNGS4621535MWD - DIR462516MWD - GR RES DIR APWD SON489936MWD - GVR GR RES APWD DIR9361540VSI4 GR4621520 -
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 typeCONDUCTOR30513.036516.00.00INTERM.13 3/8927.017 1/2936.01.28FITOPEN HOLE1540.012 1/41540.00.00 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured5161.357.0Spud Mud5281.1618.0KCl/Polymer/GEM9101.1226.0KCl/Polymer/GEM9361.2018.0KCl/Polymer/GEM9561.1225.0KCl/Polymer/GEM9661.1225.0KCl/Polymer/GEM10651.1232.0KCl/Polymer/GEM15401.1427.0KCl/Polymer/GEM