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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 364,
    "wlbName" : "25/8-3",
    "wlbHistory" : "\r\n\r\n\r\n\r\n\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\u003eWell 25/8-3 was drilled in the northern\r\npart of the Utsira High in the North Sea. The main purpose was to establish the\r\npresence of a thick accumulation of Paleocene oil sand, and evaluate the Paleocene\r\nsand-shale distribution and reservoir quality in the area. The top of the\r\nreservoir was anticipated to be at 1668 m subsea.\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 25/8-3 was spudded with the\r\nsemi-submersible installation Glomar Biscay II on 20 March 1981 and drilled to\r\nTD at 1868 m in the Danian Ekofisk Formation. A total of 159.25 hours, or more\r\nthan 23% of the total time spent on this well, were lost due to downtime in the\r\ncategories of: Subsea and Surface BOP Equipment Repairs and Casing and\r\nWellhead. The well was drilled seawater and hi-vis pills down to 219 m and with\r\nseawater/gel/Lignosulphonate from 219 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe top of the Paleocene reservoir (Hermod\r\nFormation) was encountered 64.5 m lower than predicted at 1757.5 m and the net\r\noil sand was 9.5 m thick, which is close to what was found in the 25/8-1 well\r\nto the southwest. The results were disappointing as there was much less sand\r\nthan had been anticipated. However, shows of hydrocarbons were found in thin\r\nsand stringers throughout the interval 1667-1784 m, suggesting that the OWC\r\nmight be at 1784 m (1759 m TVD SS), about the same as in the Balder field.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eOne core was cut from 1859 m to 1868 m in\r\nthe Ekofisk Formation Chalk/Limestone and recovered 90%. Reservoir data was\r\nlimited to mud logs and electric logs. No wire line fluid samples were 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 17\r\nApril 1981. It is classified as an oil appraisal of the 25/8-10 S Ringhorne\r",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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