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    "wlbNpdidWellbore" : 2319,
    "wlbName" : "15/9-20 S",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 15/9-20 S was drilled from\r\nthe Sleipner A platform on the Sleipner øst Field. It started off as\r\ndevelopment well 15/9-A-22, which was designed to provide gas production from\r\nthe Heimdal reservoir in the central part of the Sleipner Øst Field, and to\r\ncontribute with geological and reservoir technical data for optimal reservoir\r\nmanagement in this area. Due to unexpected geology in the deeper part of the\r\nwell the Cretaceous and below was reclassified to exploration well 15/9-20 S.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 15/9-20 S was spudded from the fixed\r\ninstallation Sleipner A on 16 February 1994 and drilled deviated to TD at 3624\r\nm in the Triassic Smith Bank Formation. No significant problems were reported\r\nfrom the operations. The well was drilled with seawater/PAC mud from below\r\n26" conductor to 506 m, with KCl/PHPA/PAC mud from 506 m to 1735 m, with\r\nKCl/PHPA/PAC/Glycol mud from 1735 m to 2928 m, and with ester mud from 2928 m\r\nto TD. No shallow gas was encountered.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well penetrated the Heimdal Formation\r\ntarget at 2931 m (2279.6 m TVD MSL), 11.6 m TVD deeper than prognosis. The\r\nHeimdal Formation was 104 m thick (71.2 m TVD) and proved to be gas filled as\r\nexpected. Under the Heimdal Formation the well drilled 204 m Late Cretaceous\r\nlimestone overlying 8 m Blodøks Formation. At 3247 m (2490.2 m TVD MSL) the\r\nwell drilled unexpected into Jurassic/Triassic sandy sediments, which proved to\r\nhave a 30 - 50 m TVD hydrocarbon leg.\u003c/p\u003e\r\n\r\n\u003cp\u003eFive conventional cores were cut from\r\n2940 - 3043 m in the Heimdal and into the top of the Tor Formation. A sixth\r\ncore was cut from 3216 - 3244 m, from base Hod Formation and into the Blodøks\r\nFormation. One RFT segregated sample was taken at 3272.6 m in the Skagerrak\r\nFormation.\u003c/p\u003e\r\n\r\n\u003cp\u003eWell bore 15/9-20 S was plugged back and\r\npermanently abandoned on 1 June 1994 as a gas discovery.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was perforated on wire line over\r\nthe interval 3229 - 3238 m ",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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