{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1673,
    "wlbName" : "30/9-11",
    "wlbHistory" : "\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eGeneral\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 30/9-11was drilled on the eastern\r\nsegment of the J-structure on the Oseberg Sør field in the North Sea. Neighbouring\r\nwells 30/9-9 on the J-West and 30/9-5 S on the J-Central proved oil and gas,\r\nrespectively. The primary objective of well 30/9-11 was to prove reservoir\r\nsands and oil within the Brent Group of the J-East segment and define oil/water\r\ncontacts for the Tarbert/Ness and Oseberg-Rannoch-Etive reservoirs. The well\r\nwas planned to be drilled 50 m into the Dunlin Formation to a total depth of\r\napproximately 2540 m.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eOperations and results\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWildcat well 30/9-11 was spudded with the\r\nsemi-submersible installation Vildkat on 27 October 1990 and drilled to TD at 2570\r\nm in the Early Jurassic Drake Formation. No significant problem was encountered\r\nin the operations. The well was drilled with spud mud down to 922 m and with\r\nKCl/polymer mud from 922 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTop Viking Group, Heather Formation was\r\nencountered at 2291 m. Top Brent Group, Tarbert Formation was encountered at\r\n2384 m. The Brent Group was entirely water bearing. Poor, patchy shows on thin\r\nsandstone lamina in the Heather Formation were the only indications of\r\nhydrocarbons in the well. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eFour cores were cut with good recovery.\r\nCore 1 was cut from 2382 m to 2403 m in the Tarbert and Ness formations, cores\r\n2 and 3 were cut from 2450 to 2464.5 m in the Ness Formation, and core 4 was\r\ncut from 2484 m to 2511 m in the Ness and Rannoch formations. RFT water samples\r\nwere taken at 2493 m in the Ness Formation.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was plugged back for\r\nsidetracking on 19 November 1990. It is classified as a dry well.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eTesting\u003c/span\u003e\u003c/b\u003e",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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