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    "wlbNpdidWellbore" : 2207,
    "wlbName" : "6305/12-2",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 6305/12-2 is located in the\r\nsouthwestern part of block 6305/12 in the Slørebotn Sub-basin. The primary\r\nobjective \u003c/p\u003e\r\n\r\n\u003cp\u003ewas to test the hydrocarbon and reservoir\r\npotential of a stratigraphic Cretaceous Wedge Prospect of anticipated Aptian to\r\nCenomanian age. The secondary objective was to test the reservoir quality and\r\nhydrocarbon potential of a structural closure at the Base Cretaceous level\r\ncalled the E-prospect.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 6305/12-2 was spudded with\r\nthe semi-submersible installation Deepsea Bergen on 16 October and drilled to\r\nTD at 3162 m in the metamorphic basement. A kick occurred at 2973 m, in the top\r\nof Middle Jurassic sandstone, requiring increases in mud density to 1.45 sg and\r\nresulting in lost circulation further up the hole, most likely into the\r\nPaleocene Sandstone unit. After 7" liner was set to 2635 m background gas\r\nup to 10.5 %, formation gas peaks to 13.6 % and pumps-off gas peaks to 15.5 %\r\nmade it necessary to increase the mud density in stages from 1.50 sg to 1.73\r\nsg. The one successful FMT point, at 3000 m, showed formation pressure to be\r\n1.69 sg in a very tight sandstone. The kick and technical problems related to\r\ncoring led to two technical sidetracks that should be considered when evaluating\r\nlogs and cores: the first from 2670 m to 2974 m and the second from 2910 m to\r\nfinal TD. The well was drilled with seawater and bentonite down to 437 m and\r\nwith the ANCO-2000 KCl/glycol mud system from 437 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe mapped stratigraphic wedge supposed to\r\nbe of Cretaceous age was encountered at 2970 m and proved to be Middle Jurassic\r\nsediments. The sediments were gas bearing, but with extremely poor reservoir\r\nproperties. The possible reservoir in the E - prospect consisted of metamorphic\r\nbasement with no significant porosity or permeability. Moderate shows were\r\nobserved in the Late Cretaceous, in sandstone stringers from 2530 m to 2580 m\r\nand in limestone and dolomite stringers",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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