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    "wlbNpdidWellbore" : 1342,
    "wlbName" : "6506/12-6",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 6506/12-6 was the third on the Alpha\r\nstructure in block 6506/12, and the first appraisal well on this structure.\u003c/p\u003e\r\n\r\n\u003cp\u003e6506/12-1 was a gas/condensate discovery\r\nwell on the Alpha South segment while 6406/12-4 encountered only traces of\r\nhydrocarbons on the high-pressured Alpha North segment. 6506/12-6 was\r\nclassified as an appraisal well, and designed to further examine the\r\nhydrocarbon potential, of the Alpha South segment. The primary objectives were\r\nto verify the structural interpretation of the segment, and to define\r\nhydrocarbon-water contacts.\u003c/p\u003e\r\n\r\n\u003cp\u003ePrimary targets were the Fangst and BÅt\r\nGroup sandstones and the upper Cromer Knoll Group sandstone unit (Lysing\r\nFormation). Prognosed depth was 4780 m.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 6506/12-6 was spudded with\r\nthe semi-submersible installation Dyvi Delta on 31 March 1986 and drilled to TD\r\nat 4741 m, 6 m into Early Jurassic sediments of the Åre Formation. The 26"\r\nsection was drilled first as a 12 1/4" pilot hole and then opened up with a\r\n26" underreamer. At 777 m a survey indicated that the 26" hole was\r\ndeviated from the pilot hole. After pulling out of hole and successfully\r\nreaming into the old pilot, the hole was opened up first to 17 1/2" bit,\r\nand then to 26". This was drilled to 1078 m before it was realised that\r\nthe bit had again entered the deviated hole. After reaming suspected kick-off\r\npoint drilling finally commenced in the vertical path to casing point. No\r\nfurther significant drilling problems occurred. The well was drilled with\r\nseawater down to 414m, with gypsum/polymer mud from 414 m to 1056 m, and with\r\ngypsum/polymer/lignite mud from 1056 m to TD\u003c/p\u003e\r\n\r\n\u003cp\u003eThe Lysing Formation sandstone was\r\npenetrated from 3248 m to 3271 m. Well samples from this interval had weak\r\nshows (fluorescence but no cut). Top Shetland Group came in at 2331 m, top\r\nCromer Knoll Group at 3274 m, and top Spekk Formation 4021 m. Top reservoir was\r\nencountere",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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