{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "893",
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    "OBJECTID" : 893,
    "wlbNpdidWellbore" : 2430,
    "wlbName" : "30/8-1 S",
    "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 30/8-1 S was drilled in the Viking\r\nGraben of the North Sea, just west of the Oseberg Fields.\u003c/span\u003e\u003cspan lang=EN-US\u003eThe objective was to \u003c/span\u003e\u003cspan\r\nlang=EN-GB\u003etest the hydrocarbon potential of the Jurassic Brent Group and\r\nStatfjord Formation. The well was committed to drill into the Hegre Group or to\r\na maximum depth of 5026 m TVD.\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 30/8-1 S was spudded with\r\nthe semi-submersible installation Treasure Saga on 1 November 1994 and drilled\r\nto TD at 4688 m in the Early Jurassic Amundsen Formation. No shallow gas was\r\nobserved in the well. A kick was taken at 4055 m, where 0.8 m3 was gained over\r\na 30 minute interval on drilling and 1.8 m3 gained on flow checking before\r\nshutting in the well. The kick was circulated out through the choke manifold\r\nand the well was killed with heavy mud. When logging the 12 1/4" section\r\nthe tools got stuck several times. On a short wiper trip to the 9 5/8"\r\ncasing shoe a 2.5 m3 kick was taken when circulating and 1.67 m3 while flow\r\nchecking. Again the well was killed with heavy mud. Frequent mud losses were\r\nexperienced in the final 8 3/8" section from 4332 to TD. The well was\r\ndrilled with spud mud down to 1360 m, with KCl/polymer mud from 1360 m to 4058\r\nm, and with Ancoterm High Temperature water based mud from 4058 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe main reservoir interval consisted of\r\nthe Middle and Lower Tarbert Formations, but the Ness and the ORE Formations\r\nwere also encountered. Hydrocarbons were encountered in the Tarbert Formation\r\nin a gas-down-to situation at 3687 m (3525.8 m TVD). Net sand is 109.9 m, with\r\nnet pay of 84.7 m. An additional thin hydrocarbon-bearing zone is indicated in\r\nsandstones of the Ness Formation at 3884 - 3888 m. The formation pressure data",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}