{
  "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/477?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/477?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/477?f=application/geo+json",
      "rel" : "alternate",
      "type" : "application/geo+json",
      "title" : "This document as application/geo+json"
    }
  ],
  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "477",
  "properties" : {
    "OBJECTID" : 477,
    "wlbNpdidWellbore" : 486,
    "wlbName" : "6406/6-1",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 6406/6-1 was drilled on the Eta\r\nstructure in the northwest corner of a block located just south of the Trestakk\r\nand Smørbukk discoveries. The main objective was hydrocarbon accumulations in\r\nMiddle Jurassic sandstones. The second objective was Early Jurassic sandstone.\r\nTotal depth was to be in rocks of Triassic age in order to satisfy the licence\r\ncommitment.\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 6406/6-1 was spudded with the\r\nsemi-submersible installation Dyvi Stena on 15 August 1985 and drilled to TD at\r\n4715 m in the Early Jurassic Tilje Formation. While setting the 9 5/8"\r\ncasing several problems occurred, starting with difficulties in setting and\r\ntesting the seal assembly, followed by leakage of the failsafe valves and\r\nfailure of the BOP acoustic system. This resulted in a total loss of 28 days.\r\nThe drilling proceeded to 4715 m, and the 7 m liner was run to 4696 m. Further\r\nproblems, loss of several pieces of equipment in the hole and evaluation of the\r\nlogs, resulted in the NPD approving the operators request to plug the hole 460\r\nmeter short of the prognosed depth. The well was drilled with seawater and\r\nhi-vis pills down to 333 m, with gel/seawater from 333 m to 965 m, with\r\ngypsum/lignosulphonate mud from 965 m to 4165 m, and with lignite/lignosulphonate\r\nfrom 4165 m to TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eTraces of hydrocarbons were indicated at\r\nca 3900 m in thin beds of sand stone of Early Cretaceous age. Sandstones were\r\nencountered in the Early - Middle Jurassic (Garn Ile and Tofte Formations). No\r\nhydrocarbons were observed in the Garn Formation. Weak oil shows were seen in\r\nthe Ile and Tofte sandstones.\u003c/p\u003e\r\n\r\n\u003cp\u003eOnly one core was cut in the top of the\r\nGarn (former Tomma I) Formation. RFT sampling was attempted but all samples\r\nfailed to recover formation fluid either due to plugging or to seal failure.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 30\r\nDecember 1985 as a dry well with shows.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eNo drill stem test was perfo",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}