{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 278,
    "wlbName" : "2/8-8",
    "wlbHistory" : "\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eGeneral\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 2/8-8 was drilled to appraise the\r\nValhall discovery in the southern North Sea. The well is reference well for the\r\nHod Formation.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eOperations and results\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eAppraisal well 2/8-8 was spudded with the\r\nsemi-submersible installation Deepsea Saga on 10 November 1975 and drilled to\r\nTD at 2667 m in the Early Cretaceous Rødby Formation. While running the 13\r\n3/8-inch casing, returns (125 barrels) were lost while pumping plug. While\r\ncementing the 9 5/8-inch casing, the cement slurry was not properly displaced,\r\nand the casing was cemented back on the inside to 1022 m. Three days were lost\r\ndue to this in drilling out the cement. Otherwise the well was drilled without\r\nsignificant problems. The well was drilled with sea water and hi-vis mud down\r\nto 169 m, with sea water/gel mud from 169 m to 402 m, and with lignosulphonate/gypsum\r\nmud from 402 m to TD. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eOil shows were recorded at several levels\r\nabove the chalk reservoir: 1320 - 1329 m had fair shows on siltstones; 1390 to\r\n1426 m had poor shows in shales and limestone; 1512 to 1676 m had oil staining\r\nwith fluorescence and cut in shales; and 2050 to 2400 m had poor to fair shows\r\nin thin stringers of limestone and dolomite. Top of the chalk reservoir, Tor\r\nFormation, was encountered at 2447. It was oil bearing and had shows down to 2591\r\nm. No shows were recorded below 2591 m.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eAt total of 47.7 m core was recovered in\r\n14 cores from 2450 to 2600.9 m. The overall recovery was 39 %. No wire line\r\nfluid samples were taken.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was permanently abandoned on 15\r\nMarch 1978 as an oil appraisal well.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eTesting\u003c/span\u003e\u003c/b\u003e\u003cspan lang=EN-GB\u003e \u003c/span\u003e\u003c/p\u003e",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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