7219/12-1
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General information
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Wellbore history
GeneralWell 7219/12-1 was drilled on the Filicudi prospect in the northern part of Ringvasshøy-Loppa Fault Complex in the Barents Sea. The primary objective was to test the hydrocarbon potential in the Late Triassic – Early Jurassic Tubåen and Fruholmen formations. Secondary objective was to test the hydrocarbon potential in the Triassic Snadd Formation.Operations and resultsWildcat well 7219/12-1 was spudded with the semi-submersible installation Leiv Eriksson on 25 November 2016 and drilled to TD at 2500 m in the Late Triassic Snadd Formation. Below 1500 m the well started to build angle, with maximum deviation of 8 ° at TD, where TVD is 4.5 m short of MD. The well was drilled with Seawater and hi-vis sweeps down to 667 m, and with Performadril water-based mud (3.2 – 4 % glycol) from 667 m to TD.The well encountered top Tubåen Formation primary target at 1503 m with excellent reservoir properties in Rhaetian age sandstone . The Tubåen sandstone was gas and oil filled with GOC at 1568.5 m, and oil down to the FWL at 1630 m. Oil shows, fluorescence and cut, were described on cores down to 1660 m. Apart from this, only weak shows were recorded on two sidewall cores at 1694.7 and 2320 m, and on two cuttings samples at 1687 m and 2176 m.Six cores were cut from 1503.0 m to 1671.4 m with close to 100% total recovery. MDT fluid samples were taken at 1525 m (gas), 1577.8 m (oil), 1593.3 m (oil), 1604.2 m (oil), 1628.6 m (oil), and 1651.5 m (water).The well was permanently abandoned on 19 January 2017 as an oil and gas discovery well.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]670.002500.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom11503.01529.4[m ]21530.01539.6[m ]31540.31560.5[m ]41560.51608.3[m ]51608.31617.4[m ]61617.41671.4[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]167.0Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
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 availableMDT0.000.00YESMDT1628.000.00OILYES -
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 typeCONDUCTOR30414.936414.90.00SURF.COND.20654.526662.01.40LOTPILOT HOLE662.09 7/8662.00.00INTERM.9 5/81443.312 1/41450.01.69LOTOPEN HOLE2500.08 1/22500.00.00 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]FMI MSIP GR JAR3472033FMI MSIP GR JAR19852494HRLA PEX HNGS ECS JAR19712483HRLA PEX HNGS GR JAR14432027MDT GR JAR15142320MDT GR JAR15771604MSCT GR14602444MWD - GR RES PWD DIR AC403662MWD - PWD DIR662667MWD - PWD DIR GR347403MWD - RES GRPWD DIR CAL DEN NEU6672500VSI4 GR6632491XPT ECS SMR GR JAR14432033 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit347485485149814991501150315031653172920722169 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured4151.5042.0DISPLACEMENT MUD4151.0545.0Bentonite Spud Mud4151.021.0Other5111.021.0SPUD-MUD5111.5050.0DISPLACEMENT MUD6521.1413.0Performadril6621.3941.0DISPLACEMENT MUD6621.1413.0Performadril6621.1410.0WBM6621.021.0Other6671.1413.0Performadril11731.1415.0Performadril11731.2823.0Performadril12001.1414.0Performadril12441.2823.0Performadril12501.1513.0Performadril12801.1414.0Performadril14501.2514.0Performadril14501.1413.0Performadril15031.2514.0Performadril15301.2714.0Performadril15301.2515.0Performadril25001.2719.0Performadril