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    "wlbName" : "30/9-16",
    "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 30/9-16 was drilled on the Bjørgvin\r\nArch south of the Oseberg Fault block in the North Sea. The primary objective\r\nwas to prove hydrocarbon accumulations in the Tarbert Formation and the “NORE”\r\n(lower Brent Group) reservoir. Secondary objective was to test the hydrocarbon\r\npotential in the Cook Formation and Statfjord Group reservoirs within closure.\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 30/9-16 was spudded with the\r\nsemi-submersible installation West Vanguard on 14 June 1994 and drilled to TD\r\nat 3550 m in the Early Jurassic Eiriksson Formation. No significant problem was\r\nencountered in the operations. The well was drilled with spud mud down to 165\r\nm, with ANCO 2000 mud from 165 m to 2668 m, and with KCl/polymer mud from 2668\r\nm to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eIntra Heather Formation sandstone came in\r\nat 2685 m and proved to be gas bearing with GOC at 2706 m, based on geochemical\r\ndata. Based on RFT pressure gradients the GOC is at 2711 m. The Tarbert\r\nFormation came in at 2718 m and was 101 m thick, 11 m thicker than prognosed. It\r\nwas oil-bearing with an OWC at 2764 m. There is a 10 bars pressure difference\r\nin the oil zone, between 30/9-13 S and 30/9-16. The 30/9-9 Lower Ness oil\r\ngradient is 14 bars higher than the 30/9-16 oil gradient. The water gradient is\r\nonly 1.5 bars higher than 30/9-13 S and three bars lower than 30/9-9. No hydrocarbons\r\nor shows were reported below OWC in the Brent Group, but weak shows, with gas\r\nshows at the top and oil shows below, were reported from the Statfjord Group at\r\n3455 – 3475 m. Further, down to TD, these shows disappeared or became localised.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eFour cores were cut. The three first were\r\ncut from 2694 m in the Heather Formation sandstone to 2796.4 m in the Tarbert\r\nFormat",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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