{
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  "links" : [
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      "rel" : "collection",
      "type" : "application/geo+json",
      "title" : "The collection document"
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 128,
    "wlbName" : "35/11-1",
    "wlbHistory" : "\r\n\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\u003eWildcat well 35/11-1 was drilled on the\r\n"A" structure close to the border between Block 35/11 and Block\r\n35/12, and ca 25 km north of the Troll Field. Its primary objective was to\r\nassess the hydrocarbon potential in Middle to Upper Jurassic strata on the\r\n"A" structure that straddles the border between Block 35/11 and the\r\nunlicensed Block 35/12. Sands of Lower Jurassic age were regarded as secondary\r\nobjectives. Planned TD was into the Triassic.\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\u003eA total of 317 pockmarks were identified\r\nin the area from the site survey. The average density was estimated to 20 per\r\nsquare kilometre. The average depth of these was 1-2 m, though some were of\r\ngreater depth. None of the pockmarks were seen to be active.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWildcat well 35/11-1 was spudded with the\r\nsemi-submersible installation on 23 May 1984 and drilled to TD at 3361 m,\r\napproximately 100 meters into in the Triassic Hegre Group. The 36" hole\r\nsection was drilled through boulder beds causing the bit to build angle. Because\r\nof high deviation the well was re-spudded. After drilling the 26" hole,\r\nthe well flowed several times. Although the well would not stay static, it was\r\ndecided to run the 20" casing in an attempt to seal off the water flow.\r\nThis resulted in the 20" casing parting at the wellhead, but was\r\nsuccessfully recovered. After reaming some tight spots the 20" casing was\r\nset and cement was squeezed to seabed to stop the water flow in annulus. Some\r\ntight spots were experienced in the 17 1/2" and 12 1/4" hole\r\nsections. Lost circulation occurred at 2439 m, due to this the 9 5/8"\r\ncasing was run. The well was drilled with gelled seawater spotted with hi-vis\r\npills down to 1015 m and with KCl/polymer mud fr",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}