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    "wlbName" : "31/2-14",
    "wlbHistory" : "\r\n\r\n\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 31/2-14 was drilled on the\r\nnorth-western margin of the Troll field. The main objectives of the well were\r\nto demonstrate the production potential for oil in the northern part of the\r\nTroll oil province, to evaluate the proposed template development scheme and to\r\nconfirm the predicted extension of high energy progradation sands in the\r\nnorthern region. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 31/2-14 was spudded with the\r\nsemi-submersible installation Borgny Dolphin on 23 April 1984 and drilled to TD\r\nat 1725 m in the Middle Jurassic Fensfjord Formation. The site survey before\r\nspud showed, as usual for the area, a seabed with numerous pockmarks (12\r\npockmarks/km3 on average). After setting the 13 3/8" casing shoe at 1498 m\r\na leak in the kill-line was discovered, leading to repairs of the BOP and\r\nreplacement of the marine riser. After 10 days lost time normal operations\r\ncould resume. The well was drilled with seawater and hi-vis pills down to 814\r\nm, with KCl/polymer mud from 814 m to 1513 m, and with chalk mud from 1513 m to\r\nTD. \u003c/p\u003e\r\n\r\n\u003cp\u003eNo sands were encountered above the\r\nJurassic.The well encountered hydrocarbons in the Late Jurassic Sognefjord\r\nFormation. Top reservoir was penetrated at 1533 m (1508 m SS). The GOC was at\r\n1566 m (1541 m SS) and the FWL was at 1592 m (1567 m SS). The oil-bearing\r\ninterval consists of medium to low quality sands with a very clean layer (7m)\r\nsome 3 m above the OWC. Below 1595 m (top Heather Formation) the sands are\r\nmicaceous. The core measured permeability values range from 10 mD to 10 Darcy.\r\nIn the gas bearing part of the cored interval no to weak fluorescence was\r\nrecorded. In the oil zone (1561 - 1592 m) the fluorescence varied from weak to\r\nstrong. Below 1594 m no fluorescence was recorded. Seven cores were cut from\r\n1535 m to 1599 m in the Late Jurassic sequence. No samples were taken on wire\r\nline.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 21\r\nJune as a gas and oil appraisal.\u003c/p\u003e\r\n\r\n\u003cp\u003e",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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