{
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      "title" : "The collection document"
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "175",
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    "wlbNpdidWellbore" : 179,
    "wlbName" : "2/7-1",
    "wlbHistory" : "\u003chtml\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003csp \u003c/span\u003e\u003c/p\u003ean 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 2/7-1 was drilled on the Eldfisk\r\nstructure on the Lindesnes Ridge in the North Sea. The primary objective was to\r\ntest the Late Cretaceous to Paleocene chalk sequence that had proved oil in the\r\nEkofisk structure north of Eldfisk. A secondary objective was to test older\r\nMesozoic sediments\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\u003eWildcat well 2/7-1 was spudded with the semi-submersible\r\ninstallation Ocean Viking on 3 August 1970 and drilled to TD at 4573 m in the Vestland\r\nGroup. The well was drilled with seawater and hi-vis sweeps down to 588 m, with\r\nseawater/Drill Aid mud from 588 m to 3102 m, and with seawater/lignosulphonate\r\nmud from3102 m to TD. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTop of the Danian chalk sequence, Ekofisk\r\nFormation, is at 2934 m, while top of the Cretaceous chalk, Tor Formation, is\r\nat 3014 m. In this first well on the structure, only small amounts of live hydrocarbons\r\nwere found in the Ekofisk carbonates.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThree cores were cut from 2956.6 to\r\n2987.3 m in the Ekofisk Formation. A fourth core was cut from 3032.8 to 3041.9\r\nm. No fluid sample was taken.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was permanently abandoned on 11\r\nDecember 1970 as an oil discovery\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eTesting\u003c/span\u003e\u003c/b\u003e\u003cspan lang=EN-GB\u003e \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eA drill stem test was performed in the\r\ninterval 2942 to 2954 m plus 2957 to 2975 m in the Danian chalk (Ekofisk\r\nFormation). The flow rate after acidizing was too small to measure. The\r\nrecovered fluid was composed of 65% oil and 35% water. The oil density was 32.2\r\n°API.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}