{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 83,
    "wlbName" : "30/6-9",
    "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 30/6-9 was drilled on the Gamma\r\nstructure on the Oseberg Field in the northern North Sea. The Gamma structure\r\nlies on the west side of the Alpha structure and is separated from it by a\r\nlarge northwest-southeast fault. The primary objectives of well 30/6-9 were to\r\ntest hydrocarbon accumulations in the Brent Group and find additional\r\nhydrocarbon accumulations within the Early Jurassic. This was the first well\r\nlocated on the Gamma structure. Planned depth for the well was ca 3360 m or 75\r\nm into the Triassic Lunde Formation. \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 30/6-9 was spudded with the\r\nsemi-submersible installation Nortrym on 28 August 1982 and drilled to TD at 3476\r\nm in the Late Triassic Lunde Formation. No significant problems occurred while\r\ndrilling the well. The well was drilled with seawater, bentonite and hi-vis\r\npills down to 975 m, with KCl/polymer mud from 975 m to 2750 m, and with\r\nlignite/lignosulphonate/freshwater mud from 2750 m to TD\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWeak to strong shows were reported mainly\r\nin soft limestone stringers in the lowermost part of the Lista Formation in the\r\nLate Paleocene, in the Danian, and through the Maastrichtian. Further shows above\r\nthe Brent Group were reported in cuttings in limestones from 2410 to 2422.5 m,\r\njust above the Late Jurassic unconformity. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe main target, Brent Group was penetrated\r\nfrom 2458 to 2620 m. It was hydrocarbon bearing over the entire interval with\r\nthe gas/oil contact calculated from FMT pressure recordings at ca 2520 m. This\r\nis the same, as the GOC on the Alpha structure. No oil/water contact was\r\nencountered. The net pay in the Brent Group is calculated to be 98 m giving a\r\nnet/gross ratio of 0.60. The average porosity is 22.7% with ",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}