{
  "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/660?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/660?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/660?f=application/geo+json",
      "rel" : "alternate",
      "type" : "application/geo+json",
      "title" : "This document as application/geo+json"
    }
  ],
  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "660",
  "properties" : {
    "OBJECTID" : 660,
    "wlbNpdidWellbore" : 1394,
    "wlbName" : "2/7-21 S",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 2/7-21 S was drilled to appraise the\r\n"South Eldfisk structure", now known as the Embla Field, located in\r\nthe Central Graben of the North Sea. It was the third well drilled on the structure,\r\na pre-Cretaceous fault block forming the boundary between the Grensen Nose to\r\nthe west and the Feda Graben to the east. The primary objective was to test the\r\nsandstones that tested oil in the 2/7-9 and 2/7-20 wells. It was anticipated\r\nthat the proposed location would encounter reservoir quality sands similar in\r\nnature, thickness, and depth as in the 2/7-20 well. Closure of the structure is\r\nprovided by normal down faulting to the North, South and West. Closure to the\r\neast is by the Lindesnes Ridge reverse fault. Vertical sealing is provided by\r\nthe Early Cretaceous Shales. No shallow gas was expected in this area, and no\r\nmajor obstacles other than high formation pressure in the reservoir. If\r\nsuccessful, the well was planned to constitute a second drainage point for\r\nfuture field development. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 2/7-21 S was drilled\r\ndeviated from a three-slot template located at the 2/7-20 well to a location\r\n1020 m to the southeast. The well was spudded on the 21st June 1989 and drilled\r\nusing the semi-submersible installation Ross Isle to a Total Depth of 5039 m\r\n(4706 m TVD RKB) in rhyolitic igneous rocks of probable Early Devonian age. The\r\nwell was drilled without significant problems, except for MWD failures. Shallow\r\ngas was encountered at 586.7 m but caused no problems. The well was drilled\r\nwithout problem using SOLTEX Actaflow water based mud down to 4232 m at the\r\nbase of the Cretaceous section, where 9 5/8" casing was set. The remaining\r\n8 1/2" and 5 7/8" hole sections in the well were drilled using Invermul\r\noil based mud. \u003c/p\u003e\r\n\r\n\u003cp\u003eOil-bearing reservoir quality sands were\r\nencountered at 4313 m. No definitive oil-water contact could be seen. The section\r\nconsisted of undefined lithostratigraphy of pr",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}