{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "22",
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    "OBJECTID" : 22,
    "wlbNpdidWellbore" : 23,
    "wlbName" : "34/10-18",
    "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 34/10-18 is located in the Tampen\r\nSpur area, south of the Vigdis Field and west-north-west of the Gullfaks Field.\r\nThe primary objective was the Brent Group sandstones of Middle Jurassic age. Secondary\r\nobjectives were Early Jurassic Cook and Statfjord Formation sandstones.\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\u003eWildcat well 34/10-18 was spudded with\r\nthe semi-submersible installation Ross Isle on 17 July 1983. A 12 1/4"\r\npilot hole was drilled from the 30" casing shoe to 765 m to check for shallow\r\ngas. No shallow gas was seen, but lost circulation occurred in shallow sand lenses\r\nwhen the pilot was underreamed to 26". A 17 1/2" hole was drilled and\r\nlogged to 2024 m. Two joints of 13 3/8" casing were dropped in the hole.\r\nThe hole was cemented back to 1882 m and sidetracked from 1900 m and drilled\r\nwithout significant problems to TD at 3025 m in the Early Jurassic Statfjord\r\nFormation. The well was drilled with spud mud down to 765 m and with\r\ngel/Lignosulphonate mud from 765 m to TD. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eNo live oil was seen in the well, but a\r\n3.5 m unproductive oil-zone was encountered in a, sandy/marly and cemented\r\nlimestone at the base of a very thin Cromer Knoll sequence (Mime Formation).\r\nThe average porosity was 24.3% and the average water saturation was 53.4%, but\r\ndue to tight formation the RFT was not able to obtain any pressure points in\r\nthis zone. The permeability range was 0.1 to 1 mD. Only residual hydrocarbons\r\nwere encountered in the Brent sandstones.\u003c/span\u003e\u003cspan lang=EN-GB\u003e \u003c/span\u003e\u003cspan\r\nlang=EN-US\u003eHere, t\u003c/span\u003e\u003cspan lang=EN-GB\u003ehe logs indicated an average water saturation\r\nof 95% and an average porosity of 24.2% in the net sand.\u003c/span\u003e\u003cspan\r\nlang=EN-GB\u003e \u003c/span\u003e\u003cspan lang=EN-GB\u003eThe RFT plot suggested a water gradient of\r\n1.00 g/",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}