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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 64,
    "wlbName" : "2/6-3",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 2/6-3 is located on the north western\r\nflank of the Mandal High between the Søgne Basin and the Central Graben in the\r\nNorth Sea.It was drilled to\r\ntest possible hydrocarbon accumulations in Late and Middle Jurassic sandstones.\r\nA third objective was to reconnoitre below base Permian.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 2/6-3 was spudded with the\r\nsemi-submersible installation Byford Dolphin on 9 November 1982 and drilled to\r\nTD at 4060 m, 270 meter into pre-Late Devonian basement rock. Technical\r\nproblems occurred in the 12 1/4" section due to twist-off of Kelly saver,\r\nloss of 2700 m logging cable in hole, and 9 5/8" casing hanger collapse,\r\ncausing a total of 203 hrs lost time. In the 8 1/2" section an anchor\r\nchain parted during a storm and four days were lost waiting on weather and\r\nre-anchoring. The well was drilled with water based mud.\u003c/p\u003e\r\n\r\n\u003cp\u003eIn the Late Jurassic only marine shales\r\nwere encountered. At 3545 m, 200 m higher than prognosed a Middle Jurassic,\r\nfluvial sandstone of Bajocian age (Bryne Formation) was found water bearing. A\r\nsequence of anhydrite, dolomite and pure anhydrite was found below the Triassic\r\nred-shales, but no salt or Rotliegendes reservoir rocks were encountered. The\r\nPermian anhydrite was followed by a series of slated shales and phyllitic\r\nrocks, getting progressively more and more deformed, and with an introduction\r\nof metamorphism towards TD. Rb-Sr dating on 1-micron fraction material from\r\n3875 m gave an age of 376 Ma in the Late Devonian. No oil shows were reported\r\nfrom the well. Background gas was recorded down to top Permian. No gas was\r\nrecorded below top Permian.\u003c/p\u003e\r\n\r\n\u003cp\u003eThree cores were cut. K1was cut at 3551 -\r\n3560 m in Bryne Formation sandstone with 85% recovery. K2 was cut at 3886 -\r\n3895 m in basement rock with 11% recovery (one meter, presumed to be from the\r\ntop of the interval), and K3 was cut in basement at TD with 58% recovery. RFT\r\npressure points were obtained but no wire l",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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