{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 416,
    "wlbName" : "33/9-11",
    "wlbHistory" : "\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\u003eWildcat well 33/9-11 was drilled to test\r\nthe 33/9-Epsilon prospect 6 kilometres north of the 33/9-Beta oil discovery and\r\n10 kilometres northeast of the Murchison Field (UK). The Epsilon structure is a\r\nnorthwest tilted fault block and is expressed as a topographic high at the\r\nKimmerian Unconformity surface. The primary objective was to test the hydrocarbon\r\npotential in the Middle Jurassic Brent Sand. The Early Jurassic Statfjord Sand was\r\nsecondary objective.\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\u003eExploration well 33/9-11 was spudded with\r\nthe semi-submersible installation Fernstar on 17 June 1978. The spud location\r\nturned out to be in a 25 m diameter crater in the sea floor. Due to problems\r\nwith tilting of the temporary guide base two unsuccessful spuds were made\r\nbefore the third and successful spud was made with a modified guide base on 24\r\nJune 1978. Final position refers to this hole. The well was drilled with\r\nseawater and gel down to 820 m, with KCl polymer mud from 820 m to 1870 m, and\r\nwith a fresh water/lignosulfonate mud from 1870 m to TD. Diesel and\r\nProtectomagic was spotted below 820 m, and from this depth the mud is reported\r\nto contain between 4 and 12 % oil. The well was drilled to TD at 3528 m, 91 m\r\ninto the Early Jurassic Statfjord Formation.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eGrey clays and claystone dominated the\r\nTertiary except for the sands in the intervals, 989 to 1034m and 1205 to 1225m.\r\nIn the Paleocene Balder Formation typical tuffaceous grey and red claystone\r\nwere present and were also observed above and below the Balder. The Late\r\nCretaceous Shetland Group was comprised of grey and brown claystone and\r\nsiltstones with only minor sands and carbonates. The electric log pick of the\r\ntop of the Early Cretaceous Cromer Knoll Group was taken at 3037.8 m. The Early\r\nCr",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}