{
  "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/743?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/743?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/743?f=application/geo+json",
      "rel" : "alternate",
      "type" : "application/geo+json",
      "title" : "This document as application/geo+json"
    }
  ],
  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "743",
  "properties" : {
    "OBJECTID" : 743,
    "wlbNpdidWellbore" : 1714,
    "wlbName" : "24/9-4",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 24/9-4 is located 1 km East of the\r\nborder to British sector, on the northern outskirts of the 24/9-3 Discovery.\r\nThe main objective of the well was to test the Early Eocene Frigg Formation\r\nforming a stratigraphic play in the western part of the block, where the\r\nreservoir was interpreted to result from a submarine fan deposition. The\r\nprimary risk of the prospect was the presence of the reservoir. The prognosed\r\ngross thickness of the reservoir sequence was 230 metres with a net/gross ratio\r\nof 0.50 at the well location. No secondary targets were identified.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 24/9-4 was spudded with the\r\nsemi-submersible installation Byford Dolphin on 17 April 1991 and drilled to TD\r\nat 2208 m in the Late Paleocene Lista Formation. Here, a wiper trip was\r\nperformed. When back reaming the string stuck at 1864 m. It was not possible to\r\ncirculate since the hole had packed off. Several fishing attempts were made,\r\nbut all were unsuccessful, leaving an MWD tool and a CDR tool in the hole. The\r\nhole was then cemented to 1733 m. The sidetrack vas kicked off from 1753 m to\r\nan angle of four degrees before pulling out at 1842 m. A conventional packed\r\nhole assembly vas then run to try to drill to section TD. Drilling continued to\r\n2021m where a viper trip vas performed to ream tight hole sections. Drilling\r\nresumed without incident to 2164 m where bottoms up vas circulated before\r\ntripping out. The string became differentially stuck whilst pulling out of the\r\nhole. After spotting a pill and jarring for several hours a back-off charge vas\r\nrun leaving a 30 m fish in the hole, which included an MWD tool. Several\r\nunsuccessful fishing runs were attempted before running a VSP and E-logs. The\r\nwell vas then plugged and abandoned at 2164 m.\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 24/9-4 penetrated the top of the\r\nFrigg Formation sands at 1766 m, which was 51 metres deeper than prognosed. It\r\nconsisted of very fine to fine grained well-sorted very argillaceous sandstone\r\nstringer",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}