{
  "type" : "Feature",
  "links" : [
    {
      "href" : "https://factmaps.sodir.no/api/rest/services/Factmaps/FactMapsWGS84/OGCFeatureServer/collections/254/items?f=application%2fjson",
      "rel" : "collection",
      "type" : "application/geo+json",
      "title" : "The collection document"
    },
    {
      "href" : "https://factmaps.sodir.no/api/rest/services/Factmaps/FactMapsWGS84/OGCFeatureServer/collections/254/items/36?f=json",
      "rel" : "self",
      "type" : "application/geo+json",
      "title" : "This document as JSON"
    },
    {
      "href" : "https://factmaps.sodir.no/api/rest/services/Factmaps/FactMapsWGS84/OGCFeatureServer/collections/254/items/36?f=text/html",
      "rel" : "alternate",
      "type" : "text/html",
      "title" : "This document as text/html"
    },
    {
      "href" : "https://factmaps.sodir.no/api/rest/services/Factmaps/FactMapsWGS84/OGCFeatureServer/collections/254/items/36?f=application/geo+json",
      "rel" : "alternate",
      "type" : "application/geo+json",
      "title" : "This document as application/geo+json"
    }
  ],
  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "36",
  "properties" : {
    "OBJECTID" : 36,
    "wlbNpdidWellbore" : 37,
    "wlbName" : "34/4-5",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 34/4-5 was drilled on the\r\nMort Horst in the Northeastern part of the block. The purpose of the well was\r\nto test the Zeta structure for hydrocarbons and to test the stratigraphy below\r\nthe Base Cretaceous Unconformity. The well encountered hydrocarbons in the Cook\r\nFormation and in the Statfjord Formation. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was spudded with the\r\nsemi-submersible installation Treasure Saga on November 13 1983 and drilled to\r\nTD at 3917 m in Early - Middle Triassic sediments of the Lunde Formation. The\r\nwell was drilled with seawater and bentonite down to 533 m, with\r\nbentonite/gypsum mud from 533 m to 1113 m, with gypsum/polymer mud from 1113 m\r\nto 2025 m, with gypsum/lignosulfonate (Unical) mud from 2025 m to 3200 m, and\r\nwith lignosulfonate from 3200 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eDue to severe boulder problems in the\r\n26" hole section, the well had to be re-spudded three times before the\r\n20" casing could be run and cemented. The 20" casing had to be worked\r\nand washed down to the planned depth. This action most likely buckled or partly\r\ncollapsed the 20" casing. It took approximately 5 days to drill/mill out\r\nthe bottom section of the 20" casing. Circulation was lost at 2026 m when\r\ndrilling the 17 1/2" hole. Due to the lost circulation, the 13 3/8"\r\ncasing had to be set at 2011 m. The 12 1/4" section had to be plugged back\r\nfrom 3106 m to 3005 m due to severe hole deviation problems. The maximum hole\r\nangle was 8.75°. Re-drilling this hole section and deepening it down to 3200 m\r\nthe hole angle varied between 3° and 4°. The 9 5/8" casing was set at 3195\r\nm. The 8 1/2" hole section was drilled down to 3424 m, where the first\r\ncore was cut. The core recovered shale, and it was decided to drill ahead. The\r\nhole was drilled down to 3470 m, where a new drill break occurred. While\r\ncirculating bottoms up for samples a kick was taken. A total of 43 bbls were\r\ngained before closing in the well",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}