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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 167,
    "wlbName" : "7/11-4",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 7/11-4 is located ca 8 km north-east\r\nof the Cod Field in the North Sea. The objective of the well was to test the Late\r\nPaleocene "Cod Formation" sands, gas bearing in the Cod 7/11-1 and -2\r\nwells; and the Early Paleocene, Danian, which had gas and oil shows in the\r\n7/11-1 well. Other objectives with possible but less likely development of\r\nporosity were sands of the Late - Middle Eocene and the top of the Late\r\nCretaceous chalk.\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 7/11-4 was spudded with the\r\nsemi-submersible installation Ocean Viking on 2 July 1969 and drilled to TD at 3321 m in the Late Cretaceous Tor Formation. No significant problems were\r\nencountered in the operations.\u003c/p\u003e\r\n\r\n\u003cp\u003eNone of the objectives, the Late - Middle\r\nEocene, the Paleocene Forties Formation, the Danian,\r\nor the Late Cretaceous materialized as productive zones. Sand was lacking in\r\nthe Eocene, and was shaly and tight in the top of the Paleocene Rogaland Group.\r\nOnly 9 m net of porous sand was encountered in the interval 3082 - 3098 m in\r\nthe Middle and Lower Rogaland Group. This was below the postulated water table\r\nand from logs the net sand interval was water wet. Sands in the Danian section were\r\ntight and calcareous, and no porosity was present in the Late Cretaceous chalk.\r\nShows reported from SWC's from the well were described as "oil\r\nspecks" and "bituminous specks" in sandstones and shales in the\r\ninterval 3024 - 3093 m in the Rogaland Group.\u003c/p\u003e\r\n\r\n\u003cp\u003eNo cores were cut and no wire line fluid\r\nsamples were taken.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 31 July 1969 as a dry well.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe next well on the structure, well\r\n7/11-5, was drilled in 1982 and found oil in Jurassic Ula sands.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eNo drill stem test was performed.\u003c/p\u003e\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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