7219/9-3
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General information
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Wellbore history
GeneralWell 7219/9-3 was drilled to test the Mist prospect on the border between the Bjørnøyrenna Fault Complex and the Polhem Sub-platform in the Barents Sea. The primary objective was to prove hydrocarbon contacts and commercial oil volumes in the Early Jurassic Tubåen Formation. Secondary objective was to collect data to improve understanding of potential reservoir rocks in the Late Triassic Fruholmen Formation.Operations and resultsA 9 7/8" pilot hole (7219/9-U-1) was spudded 20-25 m away from the main bore location on the 9 July 2020 and drilled down to the planned TD of the 17 ½’’ section at 757 m to check for shallow gas and reduce the depth uncertainty towards a seismic anomaly. No shallow gas was observed during drilling and the geological uncertainty was reduced by using seismic while drilling.Wildcat well 7219/9-3 was spudded with the semi-submersible installation Transocean Enabler on 12 July 2020 and drilled to TD at 1338 m in the Late Triassic Fruholmen Formation. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 757 m and with BaraHIB water-based mud from 757 m to TD.In the primary exploration target, the well encountered the Tubåen Formation with a thickness of 131 metres, of which 50 metres was sandstone layers with very good reservoir properties. Two hundred and sixty-nine metres of the Fruholmen Formation were drilled in the secondary exploration target, whereof several sandstone layers totalling 75 metres with reservoir properties varying from good to very good. The Tubåen and Fruholmen formations were water bearing with low gas readings and no hydrocarbon indications. The only hydrocarbon indications in the well were shows on cuttings and sidewall cores in the Paleocene Torsk Formation: Faint petroleum odour, direct and cut fluorescence were described in siltstones in the interval 811 to 825 m, and in a sandstone sidewall core at 920.5 m.No conventional cores were cut. MDT water samples were taken at 1052 m.The well was permanently abandoned on 29 July 2020 as a dry 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]760.001338.00 -
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 typeCONDUCTOR30407.736409.00.00SURF.COND.13 3/8750.717 1/2757.01.27FITINTERM.9 5/8889.512 1/4895.01.32FITOPEN HOLE1338.08 1/21338.00.00 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CMR MDT8891338HRLA PEX751892MWD - DIR358409MWD - GR RES APWD DIR8951338MWD - GR RES DIR APWD409757MWD - GR RES SON SWD DIR APWD757895VSP GR5601331XLR GR762886XLR GR9071298XPT MSIP HRLA PEX8891338 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit3583584664669389381069 -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory763.0[m]DCCGG772.0[m]DCCGG781.0[m]DCCGG790.0[m]DCCGG799.0[m]DCCGG808.0[m]DCCGG817.0[m]DCCGG826.0[m]DCCGG835.0[m]DCCGG844.0[m]DCCGG853.0[m]DCCGG862.0[m]DCCGG871.0[m]DCCGG880.0[m]DCCGG889.0[m]DCCGG907.0[m]DCCGG907.0[m]SWCCGG916.0[m]DCCGG922.0[m]DCCGG928.0[m]DCCGG934.0[m]DCCGG940.0[m]DCCGG940.0[m]SWCCGG946.0[m]DCCGG952.0[m]DCCGG958.0[m]DCCGG964.0[m]DCCGG970.0[m]DCCGG976.0[m]DCCGG982.0[m]DCCGG988.0[m]DCCGG994.0[m]DCCGG1000.0[m]DCCGG1006.0[m]DCCGG1012.0[m]DCCGG1018.0[m]DCCGG1024.0[m]DCCGG1030.0[m]DCCGG1036.0[m]DCCGG1042.0[m]DCCGG1048.0[m]DCCGG1049.0[m]SWCCGG1054.0[m]DCCGG1060.0[m]DCCGG1066.0[m]DCCGG1070.0[m]SWCCGG1072.0[m]DCCGG1078.0[m]DCCGG1084.0[m]DCCGG1085.0[m]SWCCGG1090.0[m]DCCGG1096.0[m]DCCGG1102.0[m]DCCGG1108.0[m]DCCGG1114.0[m]DCCGG1120.0[m]DCCGG1126.0[m]DCCGG1132.0[m]DCCGG1138.0[m]DCCGG1144.0[m]DCCGG1150.0[m]DCCGG1156.0[m]DCCGG1162.0[m]DCCGG1168.0[m]DCCGG1173.2[m]SWCCGG1174.0[m]DCCGG1180.0[m]DCCGG1186.0[m]DCCGG1192.0[m]DCCGG1198.0[m]DCCGG1204.0[m]DCCGG1210.0[m]DCCGG1216.0[m]DCCGG1222.0[m]DCCGG1228.0[m]DCCGG1234.0[m]DCCGG1240.0[m]DCCGG1245.0[m]SWCCGG1246.0[m]DCCGG1252.0[m]DCCGG1258.0[m]DCCGG1264.0[m]DCCGG1270.0[m]DCCGG1276.0[m]DCCGG1282.0[m]DCCGG1282.5[m]DCCGG1288.0[m]DCCGG1294.0[m]DCCGG1300.0[m]DCCGG1306.0[m]DCCGG1312.0[m]DCCGG1318.0[m]DCCGG1324.0[m]DCCGG1330.0[m]DCCGG1338.6[m]SWCCGG