{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "572",
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    "OBJECTID" : 572,
    "wlbNpdidWellbore" : 1014,
    "wlbName" : "2/12-1",
    "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 2/12-1 is located in the Feda Graben\r\nn the southern North Sea, ca 1.5 m north of the Danish/Norwegian border. The\r\nmain objective of the well was to prove the extension of the Danish\r\n"Gert" discovery into block 2/12. The primary target was Middle\r\nJurassic sandstones, prognosed at 4826 m. Possible secondary targets were Early\r\nJurassic and Triassic sandstones. Structural closure was not defined at Top\r\nShetland or Base Cretaceous levels, but minor stratigraphic trapping was considered\r\npossible in this area. Prognosed TD was 5125 m.\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 2/12-1 was spudded with the\r\nsemi-submersible installation Treasure Scout on 14 October 1986 and drilled to\r\nTD at 4795 m in volcanic breccia of the Early Permian Rotliegend Group. Drilling\r\nproceeded without significant problems down to 3970 m where gas problems were\r\nexperienced. The hole was cleaned up, and dual induction/sonic log was run. Due\r\nto increasing gas recordings 9 5/8" casing was set at 3978 m. The\r\nremaining logging program in this section was therefore not run, and sidewall\r\ncores were not taken. At 4705 m a drill- break was experienced. The hole was\r\ncirculated, tested, and drilled to 4714 m. During logging the tool got stuck\r\nand the string was cut. The fish was stuck at 3842 m, and loosening was\r\nunsuccessful. 7" liner was set at 3826 m and cemented. During circulation\r\nhydrocarbons started to flow in between 9 5/8" shoe and 7" liner. The\r\nwell was closed and heavy mud was squeezed into the formation. After 3 weeks\r\nthe fish was pulled out of the hole. The well was drilled with spud mud down to\r\n1015 m, with KCl/polymer mud from 1015 m to 4050 m, and with Lignosulphonate\r\nmud from 4050 m to TD\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 2/12-1 encountered 71 m of o",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}