{
  "type" : "Feature",
  "links" : [
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      "rel" : "collection",
      "type" : "application/geo+json",
      "title" : "The collection document"
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    {
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      "rel" : "self",
      "type" : "application/geo+json",
      "title" : "This document as JSON"
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      "type" : "text/html",
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "233",
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    "OBJECTID" : 233,
    "wlbNpdidWellbore" : 238,
    "wlbName" : "1/5-2",
    "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\u003eThe Flyndre well (1/5-2) was drilled on a\r\nstructural high situated in the Feda Graben of the North Sea close to the UK\r\nborder. The principle objective horizons were the Paleocene and Jurassic sand\r\nsections which had produced oil in the UK 30/13-2 well and the NO 2/7-3 wells. It\r\nwas estimated that at Paleocene depth the structure was an irregular dome about\r\n4 miles in diameter, with 12 square miles of closure and 290 ft (88.4 m) of\r\nvertical relief while at Jurassic depth the structure was a NW-SE trending\r\nanticline 4.5 miles by 3.5 miles with 12 square miles of closure at 190 ft (57.9\r\nm) of vertical relief. Planned TD was 15000 ft (4572 m), Triassic sands, or the\r\nZechstein Group, whichever came first. \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\u003ca name=\"OLE_LINK2\"\u003e\u003c/a\u003e\u003ca name=\"OLE_LINK1\"\u003e\u003cspan\r\nlang=EN-GB\u003eWell 1/5-2 \u003c/span\u003e\u003c/a\u003e\u003cspan lang=EN-GB\u003ewas spudded on 19 October\r\n1973, 15 m away from the original Flyndre well 1/5-1, which was junked at 491 m\r\nfor technical reasons. Well 1/5-2 was drilled with the semi-submersible\r\ninstallation Ocean Viking. Total depth was set at 4287 m in Late Permian Zechstein\r\nsalt. The well was drilled with seawater and hi-vis pills down to 494 m. The\r\nrest of the well was drilled with lignosulphonate mud.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well had shows throughout the\r\nPaleocene and Late Cretaceous sections and four drill-stem tests were carried\r\nout.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe top sand in Paleocene at 2832 m (Forties\r\nFormation sand) produced oil upon testing. Mud log shows were present in the\r\nDanian, but testing proved the section to be tight and unproductive. A thick Late\r\nCretaceous section was encountered with oil shows at the top of the Maastrichtian\r\n(Tor Formation) and in the Campanian (Lower Tor and Hod Formation) sections. Drill-stem\r\nt",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}