{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1288,
    "wlbName" : "35/8-3",
    "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 35/8-3 was drilled in the southern\r\nend of the Sogn Graben in the Northern North Sea. The primary objective was to\r\nassess the hydrocarbon potential of the Brent Group sandstones, which flowed\r\ngas-condensate in wells 35/8-1 and 35/8-2. The Brent Group was expected to be\r\n212 m thick and to be encountered at a depth of 3631 m subsea. Secondary\r\nobjectives were Late Jurassic Intra-Heather Formation sandstones, and possible\r\nIntra-Early Cretaceous sandstones.\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 35/8-3 was spudded with the\r\nsemi-submersible installation Treasure Scout on 6 July 1988 and drilled to TD\r\nat 3944 m (3947 m logger's depth) in the Middle Jurassic Brent Group. No\r\nshallow gas was observed. While drilling the 12 1/4" section the drill\r\nstring got stuck in Heather sands at 3539 m. After 7 days unsuccessful fishing\r\nthe hole was plugged back to 3308 m. It was sidetracked from 3371 m and drilled\r\nto section TD at 3560 m. The BHA got stuck a second time at 3863 m in the 8\r\n1/2" section. After 5 days with several fishing attempts by jarring the\r\nBHA was fished after spotting a diesel based fluid. The diesel was circulated\r\nout and the well was drilled to its final TD. The well was drilled with spud\r\nmud down to 830 m, with Drispac and seawater from 830 m to 2174 m, and with\r\nKCl/polymer mud from 2174 m to TD. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eHydrocarbon indications while drilling\r\nwere minor except in the Late Jurassic Heather sands.\u003c/span\u003e\u003cspan\r\nlang=EN-GB\u003eLog analyses of the Heather sands indicated a probable gross gas\r\ncolumn of 70 m with a net pay of 31.9 m. Average porosity in the net sand was\r\n15.6% with an estimated average water saturation of 22%. An RFT pressure-depth\r\nplot confirmed a gas column with an estimated 0.162 psi/ft (3.66 KPa/m)\r\npres",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}