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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 2476,
    "wlbName" : "25/9-1",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 25/9-1 is\r\nlocated East of the Jotun area and Southwest of the small 25/6-1 Discovery.\r\nWell 25/9-1 was drilled to test the hydrocarbon potential of Middle Jurassic\r\nHugin Formation sandstones (Rummel prospect) with sandstones of the Lower\r\nPalaeocene Ty Formation as a secondary target.\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 25/9-1\r\nwas spudded with the semi-submersible "Vildkat Explorer" 28 March\r\n1995 and drilled to a total depth of 2525 m as prognosed, 110.5 m into\r\nsediments of the Late Triassic Smith Bank Formation. The well was drilled with\r\nbentonite / sea water down to 1056 m and with "Anco 2000" mud with ca\r\n3% "Anco 208" glycols from 1056 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eNo shallow gas or\r\nboulder beds were encountered in the uppermost well section. The well penetrated\r\nmainly clays and claystones in the Nordland, Hordaland and Rogaland groups. A\r\nclean Quaternary sandstone was seen between 275 and 319 m. The Utsira (754.5 m\r\n- 1000 m) and Skade (1284.5 m -1344.5 m) Formation sandstones were also\r\npresent. Top Våle Formation was reached at 2030.5 m but no Ty Formation sands\r\nwere present and the lithology consisted mainly of limestones and chalk, which\r\ncontinued down to top Shetland Group at 2043.5 m. The Shetland Group consisted\r\nmainly of chalk with the Cromer Knoll Group consisting of limestones\r\ninterbedded with clay stones and marls. The Hugin Formation sandstones came in\r\nas prognosed at 2184.5 m and were found to be water bearing. One 11.5 metre\r\ncore was cut. The core showed excellent reservoir parameters. \u003c/p\u003e\r\n\r\n\u003cp\u003eNo hydrocarbons were\r\nfound in the Våle Formation. Weak shows were seen in drilled cuttings from two\r\nintervals; the Lista Formation from 1951 m to 2017 m and in the Draupne and\r\nHeather formations from 2167 to 2184.5 m and in a number of sidewall cores\r\nrecovered from wire line log run 2F, interval 1988 m to 2413 m. Post well\r\norganic geochemical analysis confirmed traces of migrated hydrocarbons present\r\nin ",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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