{
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    "wlbNpdidWellbore" : 51,
    "wlbName" : "6507/11-2",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 6507/11-2 was drilled as the\r\nfourth well offshore Mid-Norway in the Møre/Trøndelag II area. The well was\r\ndrilled on a symmetric, north-south trending horst called Y-1 in the\r\nnortheastern part of the block, where seismic line SG 8158-401 indicated a\r\npossible minor rollover trending north-south at the Base Cretaceous level. The\r\nobjective of well 6507/11-2 was to test the stratigraphic sequence below the\r\nTop Palaeocene reflector. The targets, represented by expected minor vertical\r\nclosures, were sandstone reservoirs of Early - Middle Jurassic age. The\r\nentrapment of major petroleum accumulations was dependent upon a lateral\r\nsealing mechanism in the northern part of the Y-l horst.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 6507/11-2 was spudded with the\r\nsemi-submersible installation West Venture on 18 April 1982 and drilled to TD\r\nat 2905 m in the Late Triassic Grey Beds. No significant problems were\r\nencountered during operations. The well was drilled with seawater and slugs of\r\nspud mud down to 412 m, with gypsum mud from 412 m to 857 m, with\r\n"Pro-mud" gypsum polymer mud from 857 m to 1775 m, and with\r\nLignosulphonate mud from 1775 m to TD. In the Jurassic and Triassic section\r\nfrom 1898 to TD, sandstones with a total net porous sand thickness of 395 m was\r\nfound. They were all water bearing. The Net-Gross ratio of the Jurassic\r\ninterval, 1898-2622 m is 0.45. The Middle/Early Jurassic Ile Formation\r\n(1948-2040 m) was fine to medium grained and well sorted sandstone. A net sand\r\nthickness of 65 m was defined in Ile, with porosity of 31% and permeabilities\r\nranging from 100 mD to 28 D. The upper part was clean and showed extremely good\r\nreservoir rock properties. The lower part of the sand contained significant\r\namounts of mica. Although this part was less permeable than the top, this too\r\nwas a very good reservoir rock. The Early Jurassic sand (2117 - 2289 m) was\r\nless sorted than the Middle Jurassic sand. It was very fine grained and\r\ncontai",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}