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    "wlbNpdidWellbore" : 415,
    "wlbName" : "33/9-10",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\u003cp\u003eWildcat well 33/9-10 is located on the Tampen Spur North of the Murchinson Field.\r\nThe Middle Jurassic Brent sand was the primary objective with the Early Jurassic\r\nStatfjord sand as a secondary objective. Planned TD was 3695 m, interpreted to be 30 m\r\ninto the Statfjord Formation. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\u003cp\u003eWildcat well 33/9-10 was spudded with the semi-submersible installation Fernstar\r\non 7 April 1978 and drilled to TD at 3715 m in the Early Jurassic Statfjord Formation.\r\nThe well was drilled with Spud down to 516 m, with seawater/FCL polymer mud\r\nfrom 516 to 1820 m, with lignosulphonate/fresh water from1820 to 3491 m, and with\r\nQbroxin/CC-16/fresh water from 3491 m to TD. Spots of diesel and protectomagic\r\n(water or diesel-dispersed asphalt) was added to the mud, beginning at 1820 m.\r\nFrom 1820 m, oil in the mud was reported at contents varying between 3% and 20%. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe electric log pick of the top of the Early Cretaceous Cromer Knoll Group was\r\ntaken at 3113 m, giving an Early Cretaceous thickness of 146.8 m. The Early Cretaceous\r\nconsisted of 20.3 m of Barremian limestone at the base with red marl interbedded with\r\nthe overlying claystone section. \u003c/p\u003e\r\n\r\n\u003cp\u003eTop Late Jurassic Viking Group was picked at 3259.8 m, 15.7 m high to prognosis.\r\nThe thickness was 88.2 m of which the upper 69.2 m was the Draupne Formation and the\r\nlower 19 m was the Heather Formation. The lithology of the Viking Group was grey to\r\ndark grey, silty claystone. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe primary objective Brent Group was penetrated at 3348 m, 37.5 m high to prognosis.\r\nThe sandstone was argillaceous, medium grained, and had fair to poor porosity.\r\nOf the expected 140 m of Brent Group, only 67.5 m was found. Of this 37 m was net sand.\r\nThe Brent Group was water bearing. No shows were seen in the ditch samples. One core\r\nwas cut from 3358 m to 3376 m. Very poor shows were observed in the core, but electric\r\nlogs and Schlumberger Coriband analysis indicated the Brent Formation to be water wet.",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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