{
  "type" : "Feature",
  "links" : [
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      "rel" : "collection",
      "type" : "application/geo+json",
      "title" : "The collection document"
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    {
      "href" : "https://factmaps.sodir.no/api/rest/services/Factmaps/FactMapsWGS84/OGCFeatureServer/collections/254/items/47?f=json",
      "rel" : "self",
      "type" : "application/geo+json",
      "title" : "This document as JSON"
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      "type" : "text/html",
      "title" : "This document as text/html"
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "47",
  "properties" : {
    "OBJECTID" : 47,
    "wlbNpdidWellbore" : 48,
    "wlbName" : "2/1-4",
    "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 2/1-4 was drilled on the margin\r\nbetween the southern Vestland Arch and the Central Trough in the North Sea. The\r\nfirst well in the block, well 2/1-1 drilled in 1972, was abandoned after taking\r\na kick in the Late Jurassic. The second well, well 2/1-2 drilled in1978\r\nencountered water wet Late Jurassic sandstones. The 2/1-3 well was drilled in\r\n1980 on the downthrown side of a NW-SE trending fault complex and found oil in\r\na 60 m thick Late Jurassic sandstone. A second Jurassic sandstone in 2/1-3 (Ula\r\nFormation) was water wet. The primary objective of the 2/1-4 well was to\r\nappraise the oil in the Late Jurassic "2/1-3 sandstone" (Gyda member).\r\nSecondary objectives were to test the Ula and Bryne Formations and the\r\nTriassic.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well is reference well for the Vidar\r\nFormation.\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\u003eAppraisal well 2/1-4 was spudded with the\r\nsemi-submersible installation Aladdin on 5 April 1982 and drilled to TD at 4525\r\nm in the Late Permian Zechstein Group. The first and second spuds were\r\nunsuccessful and only the third spud, on 12 April and 60 + 50 ft in direction\r\n315 deg away from the planned location, was successful. The 17 1/2"\r\nsection from 633 to 2006 m and the upper part of the 12 1/4" section were\r\ndrilled with severe swelling shale (gumbo) problems. The well was drilled with\r\nseawater and hi-vis pills down to 633 m, with CMC/gypsum mud from 633 m to 2006\r\nm, and with CMC/gypsum/lignoslulfonate mud from 2006 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 2/1-4 penetrated the top of the Late\r\nJurassic sandstone at 4040 m and the log and core analysis confirmed the\r\nformation to be oil bearing. The log evaluation and core studies showed the Late\r\nJurassic sandstone to consist of two main zone",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}