{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 35,
    "wlbName" : "31/6-3",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe primary objective of the wildcat\r\n31/6-3 was to assess possible hydrocarbon accumulations in the sands and\r\nsandstones of the Late Jurassic Sognefjord Formation. The target was prospect\r\nC, a structural trap in the southeastern corner of block 31/6 extending into\r\nthe adjacent blocks 31/9, 32/4 and 32/7. The well was located on the apex of\r\nprospect C. The secondary objective of the well was to obtain Sedimentological\r\ndata for the Sognefjord Formation sandstones in the well location. The well was\r\nplanned to reach total depth at ca 2200 m, approximately 100 m into the\r\nTriassic.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was spudded with the\r\nsemi-submersible installation Nortrym on 1 November 1983. Repositioning of the\r\nrig had to be done due to anchoring problems. At 1950 m the drill string was\r\nhung off. Problems when attempting to retrieve the drill string resulted in\r\npulling of BOP. When running in hole after 7 days, 10 m of fill was found. No\r\nother major problems occurred during drilling and the well reached planned TD\r\nat 2250 m in the Triassic Hegre Group. The well was drilled with seawater and\r\nhi-vis pills down to 618 m and with KCl/Polymer mud from 618 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well encountered water-bearing\r\nsandstones in the Late/Middle Jurassic Sognefjord Formation as well as in the\r\nlower lying sandstones. No oil shows were noted on cores, sidewall cores or\r\ncuttings in any section of the well. Gas readings were low or nil throughout\r\nexcept for a 2.6% methane reading in a shallow sand unit at 414 m. The Sognefjord\r\nFormation sandstones (1511-1647 m) are very fine to fine, occasionally medium\r\ngrained, micaceous, occasionally carbonaceous and slightly argillaceous. In\r\nplaces the sandstones grade into siltstones. They are well to moderately sorted\r\nand have fair visible porosity. The underlying Sognefjord, Fensfjord, and\r\nKrossfjord Formations (1647-1931.5m) are dominated by fine to medium, locally\r\nvery fine or coarse grained sandstones which are o",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}