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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 2573,
    "wlbName" : "25/8-6",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 25/8-6 was\r\ndrilled to appraise the 25/8-5 S Discovery (Jotun) resource base and to confirm\r\nthe OWC. The well is located close to the crest of the field, close to the\r\nwestern block boundary and PL103, who participated in the well.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was drilled\r\nas a possible future vertical sub-sea producer. \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\r\n25/8-6 was spudded with the semi-submersible installation "Vildkat\r\nExplorer" on 19 May 1995 and drilled to TD at 2565 m. The well was drilled\r\nwith seawater and hi-vis pills down to 1060 m and KCl/glycol mud from 1060 m to\r\nTD. Due to bad hole condition it was impossible to get wire line logs below\r\n1460 m. The well was plugged back on 6 June and technically sidetracked& (25/8-6T2) from just below the 13 3/8" casing\r\nat 1073 m using "Lo-Tox" mineral oil based mud. This well bore built\r\nup to 13& at 1329 m and then dropped back to vertical at 1600 m, the well was\r\nkept vertical down through the reservoir. It was drilled to TD at 2577 m in the\r\nin the Early Paleocene Ekofisk Formation. Successful wire line logging was\r\nachieved in this well bore. The well confirmed oil in the Heimdal Formation\r\nwith OWC at 2090 m TVD SS (2122.6 m RKB in the technical sidetrack) in clean\r\nsand.\u003c/p\u003e\r\n\r\n\u003cp\u003eEight cores were cut\r\nin the first well bore. Two were cut in shales of the Lista Formation (2054m to\r\n2057 m and 2057 m to 2065 m). Due to very slow coring rate, coring was\r\ndiscontinued and a 12 1/4" hole was drilled down to 2077 m at the next\r\ncore point. Six cores were subsequently cut in Heimdal Formation sandstone in\r\nthe interval 2077 m to 2137.5 m. MDT fluid samples were taken in the Heimdal\r\nFormation at 2082.2 m (oil), 2122.1 m (oil), 2123.0 m (water + ca 15% oil),\r\n2143.5 m (water), and 2145 m (water). After running TD logs, a string of 10-3/4"\r\nx 9-5/8" production casing was run and cemented, and the well was\r\nsuspended on 27 June 1995 as an oil appraisal and potential future",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}