{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 295,
    "wlbName" : "7/12-2",
    "wlbHistory" : "\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 7/12-2 was drilled on a salt induced\r\nstructure on the east side of the Cod Terrace in the North Sea. The primary\r\nobjective was to evaluate potential Upper Jurassic and Triassic reservoirs\u00A0 \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well is Type well for the Ula Formation\r\nand Reference well for the Farsund Formation.\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 7/12-2 was spudded with the\r\nsemi-submersible installation Norskald on 4 July 1976 and drilled to TD at 3676\r\nm in the Early Jurassic Gassum Formation. The well was drilled with\r\nseawater/gel down to 158.5 m and with seawater/lime Drispac mud from 158.5 m to\r\nTD down to 495 m and with a lime/Drispac mud from 495 m to TD. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 7/12-2 penetrated a major Late\r\nJurassic reservoir (Ula Formation) and was terminated within a hydrocarbon\r\nbearing sequence of poor quality sands and interbedded shales in the Gassum\r\nFormation. Core analysis and log interpretation indicate an Ula Formation\r\nsandstone reservoir of 128 m net thickness (154 m gross) with porosities\r\nranging from 14 to 28%, permeabilities from a few millidarcy to over two darcy\r\nand water saturations from 5 to over 50%. The Ula Formation was oil bearing\r\nfrom top to base at 3532 m in an oil down-to setting. The Gassum Formation\r\nsandstones have a porosity between 11 and 19%, average permeability of 1 md and\r\nwater saturation generally in excess of 70%.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eEleven cores were cut in the well. Cores\r\none to ten were cut in succession from 3385.75 m (3380.95 m logger's depth) to\r\n3476.9 m (3470.9 m logger's depth) in the Ula Formation. The overall core\r\nrecovery for this section was 97.3%. Core no 11 was cut in the Early Jurassic from\r\n3634.2 to 3652.3 m with 100% recovery. The core-l",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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