{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 73,
    "wlbName" : "30/6-7",
    "wlbHistory" : "\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 30/6-7 is an appraisal well on the\r\nOseberg Field, discovered by well 30/6-1 in 1979.The primary objective was to\r\ntest for hydrocarbon accumulations in the Late Jurassic sandstones of the Brent\r\nformation and the Late and Early Jurassic sandstones of the Dunlin and\r\nStatfjord formations in the Alpha north structure. Secondary objectives were to\r\nestablish the type of communication between the Alpha and Alpha North\r\nstructures and to define the oil/water contact on Alpha North. The well was\r\nplanned to reach total depth at 3225 +- 50 m, 75 m into the Statfjord\r\nFormation.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well is Type well for the Oseberg\r\nFormation and Reference well for the Amundsen, Cook, Drake, Etive, Ness, and\r\nTarbert Formations.\u003cb\u003e \u003c/b\u003e\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\u003eWell 30/6-7 was spudded with the\r\nsemi-submersible installation Nortrym on 20 May 1982 and drilled to TD at 3236\r\nm in Early Jurassic rocks of the Statfjord Formation. The 26" section was\r\ninitiated by a 17 1/2" pilot hole. One small pocket of shallow gas was\r\ndetected at 358 m (5.6% C1). The well was drilled with seawater and hi-vis\r\npills down to 952 m and with KCl/polymer mud from 952 m to 2285 m. At 2285 m\r\nthe 13 3/8" casing got stuck and a pill of EZY spot and diesel was pumped\r\nin the hole, without effect. The drilling fluid used in the 12 1/4"\r\nsection from 2285 m to 2915 m the well was drilled with a Dextrid/KCl mud. From\r\n2915 m to TD the mud was converted to a dispersed system by adding\r\nlignosulfonate.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe Brent Group was encountered at 2631.5\r\nm. The Brent Group was hydrocarbon bearing with a total gross thickness of\r\n154.5 m and a net sand interval of 106.9 m. The net pay was 50.7 m. Sandstone\r\nintervals were also encountered in",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}