{
  "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/178?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/178?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/178?f=application/geo+json",
      "rel" : "alternate",
      "type" : "application/geo+json",
      "title" : "This document as application/geo+json"
    }
  ],
  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "178",
  "properties" : {
    "OBJECTID" : 178,
    "wlbNpdidWellbore" : 182,
    "wlbName" : "25/10-3",
    "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 25/10-3 is located in the western part\r\nof the Balder Field complex on the Utsira High in the North Sea. Lower Eocene\r\noil sands had been encountered in Esso wells 25/10-1, 25/11-1 and 25/8-1. The\r\nobjective of 25/10-3 was to test the Eocene sand in a lower structural position\r\nto accurately establish the oil/water contact in the area; to determine their\r\nlateral continuity and if they would thicken towards the northwest.\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 25/10-3 was spudded with the vessel\r\nGlomar Grand Isle on 27 August 1970 and drilled to TD at 1921 m in the Early\r\nPaleocene Ekofisk Formation. Except for stuck pipe at 1247 m, which was worked\r\nfree with Diesel oil and pipe lax in 4 hours, drilling operations were routine\r\nand trouble-free. The well was drilled with seawater/gel down to 402 m, with\r\nseawater Spersene/XP-20/Salinex mud from 402 m to 951 m, and with fresh\r\nwater/Spersene/XP-20 mud from 951 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe Oligocene to Recent sediments\r\nconsisted of clays and sands with no indications of hydrocarbons. The 518 m thick\r\nEocene section was chiefly grey to grey green clay shales with 6.7 m of wet sand\r\nin the interval 1401 m to 1413 m (Grid Formation), a 4 m oil-bearing sand from 1750\r\nto 1754 m (Intra Balder Formation sandstone), and a 1 m wet sand at 1799 m. The\r\n4 m oil sand had 32-36% porosity and tested 26 deg API gravity oil on a wire\r\nline formation test. Oil shows were observed in cuttings from 1716 m and down\r\nto the top of the oil bearing sand, and shows continued down to 1768 m, all through\r\nthe cored section. In addition to the Intra Balder Formation sandstone the\r\nPaleocene section penetrated was composed primarily of 3 sands interbedded with\r\ngrey green shale. From top to bottom the Paleocene sands were respectively 29 m\r\nth",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}