{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 72,
    "wlbName" : "30/2-1",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 30/2-1 is located roughly mid-way\r\nbetween the Oseberg Field complex and the Kvitebjørn Field in the Northern\r\nNorth Sea. The primary objective of the well was sandstones of Middle Jurassic\r\nage. Secondary objectives were sandstones of Paleocene and Late/Early Triassic\r\nage. \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 30/2-1 was spudded with the\r\nsemi-submersible installation Dyvi Delta on 17 May 1982 and drilled to TD at 4243 m, 133 m into the Early Jurassic Statfjord Formation. A total of 125 days\r\nwere spent on the drilling phase, which was 5 days more than prognosed. Twelve\r\ndays were lost due to problems with lost circulation, gas influx, stuck pipe\r\nand a leaking liner overlap in the 8 1/2" hole section. Three and a half\r\ndays were lost to free the 13 3/8" casing when this got stuck at 1998 m. Most\r\nof those days were caught up because total depth was reached 357 m shallower\r\nthan prognosed, and because of successfully turbodrilling with diamond bits in\r\nthe 12 1/4" and 6" hole section. The well was drilled with spud mud\r\ndown to 1035 m, with Gypsum mud from 1035 m to 1860 m, and with\r\nGypsum/Lignosulphonate mud from 1860 m to 2155 m. An oilfaze/pipelax and an\r\nImco spot/pipelax pill was spotted at 1998 m to free the pipe. From 2155 to TD\r\nthe well was drilled with Spersene XP 20 (Lignosulphonate).\u003c/p\u003e\r\n\r\n\u003cp\u003eHydrocarbons were encountered in the\r\nBrent group. The secondary prospects were found to be water wet, although oil shows\r\nwere recorded in dolomite between 1852 m and 1911 m in the Eocene and in a 30\r\ncm thick sandstone bed at 1952 m in the Late Paleocene Balder Formation. Weak\r\nshows were also recorded on sandstones from 4119 m to 4202 m in the Statfjord\r\nFormation.\u003c/p\u003e\r\n\r\n\u003cp\u003eEleven cores were cut with a total\r\nrecovery of 108.8 metres. Two cores were cut from 1952 m to 1969.5 m in the Late\r\nPaleocene Balder Formation, while 9 cores were cut from 3696 m to 3794 m in the\r\n Ness, Etive, and Rannoch Formations of the Brent Group. Fi",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}