{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "225",
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    "OBJECTID" : 225,
    "wlbNpdidWellbore" : 230,
    "wlbName" : "34/10-8",
    "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 34/10-8 was drilled on the southern\r\npart of the Gullfaks Field. The primary objective was to test sandstones of\r\nMiddle Jurassic age. Secondary objectives were sandstones in the Early\r\nJurassic.\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 34/10-8 was spudded with\r\nthe semi-submersible installation Deepsea Saga on 8 March and drilled to TD at 2214\r\nm in the Early Jurassic Cook Formation. Some problems with lost circulation was\r\nencountered when circulating prior to cementing the 13 3/8" casing. Also\r\nthe drill string became stuck during plug back operations at 2037 m and 9 days\r\nwere lost when fishing for it. The well was drilled with Gel/spud mud down to 875\r\nm and with gel/lignosulphonate from 875 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe Middle Jurassic Brent Group sandstones\r\ncame in with Tarbert Formation on top at 1821 m and the Ness Formation at 1853\r\nm. The Tarbert and Ness formations were hydrocarbon-bearing with a 151 m gross\r\npay zone from1821 to 1972 m. The Early Jurassic sandstones of the Cook\r\nFormation were water saturated. Above the reservoir good oil shows were\r\nrecorded on limestone from 1712 to 1745 m and on limestone/mudstone/siltstone\r\nfrom 1665 to 1705 m. Otherwise traces of oil shows were recorded above the\r\nreservoir up to a depth of 1220 m. No shows were recorded below the oil bearing\r\nreservoir.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eA total of 13 cores were taken from 1823 to\r\n1976 m, with a total recovery of 140 m. The RFT tool was run in the Brent sand\r\nand good data was obtained from 1826 to 2006 m. Fifteen out of seventeen tests\r\nwere successful. In the Ness zone a fluid sample was taken at 1950 m.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was permanently abandoned on 25\r\nMay 1980 as an oil appraisal well.\u003c/s",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}