{
  "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/283?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" : "283",
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    "wlbNpdidWellbore" : 288,
    "wlbName" : "2/11-5",
    "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 2/11-5 was drilled on the western\r\nlobe of the Hod Field to test the Late Cretaceous Chalk section. The well was\r\nlocated 1.8 km SSE of 2/11-2 which tested oil from a very thin Chalk section of\r\nthe Lower Hod Formation. Structural interpretations were made showing a NW-SE\r\ntrending graben traversing the West Hod lobe. Based on a model from East Hod,\r\nit was expected that the porous Tor Formation should be preserved below the\r\nunconformity within this structure.\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\u003eWell 2/11-5 was spudded with the\r\nsemi-submersible installation Dyvi Alpha on 18 May 1979 and drilled to TD at 2945\r\nm in the Early Cretaceous Rødby Formation. No significant problem was\r\nencountered in the operations, however six days were spent repairing the BOP\r\nstack before it could be run and two days were spent while mixing oil-based\r\nmud. The well was drilled with seawater, bentonite and CMC EHV down to 1285 m,\r\nwith gyp/CMC mud from 1285 m to 2320 m, with lignosulphonate mud from 2320 m to\r\n2765 m, and with oil based "Oilfaze" mud from 2765 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe Paleocene Ash Marker (Balder\r\nFormation) was encountered at 2715 m; 105 m low to prognosis. The top of the\r\nChalk Group, Ekofisk Formation was encountered at 2822 m; 117 m low to\r\nprognosis. In total, the Chalk section was found to be 98 m thick, whereas 300\r\nm was predicted. These discrepancies reflect the effects of the shallow gas in\r\nthe area on the seismic data. The velocity corrections which were applied to\r\nthe seismic were too large. As a consequence, the Chalk Group within the Graben\r\nwas found below the oil-water contact of the area and no moveable hydrocarbons\r\nwere encountered. Frequent oil shows were reported however, starting in the\r\nupper part of the Hordaland Group: \u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}