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    "wlbNpdidWellbore" : 3042,
    "wlbName" : "35/11-10",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 35/11-10 is located on the western\r\nedge of the Uer Terrace, ca 9 km North of the Troll Field. It was drilled to\r\nappraise the oil and gas discovery made in the exploration well 35/11-4, which\r\nencountered hydrocarbons in the Upper Sognefjord Formation separated from an\r\noil column in the Lower Sognefjord Formation, in the Fensfjord Formation, and\r\nin the Brent Group. In addition the Utsira Formation was to be cored in order\r\nto obtain information about the productivity for injection water.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 35/11-10 was spudded with\r\nthe semi-submersible installation West Vanguard on 19 May 1997 and drilled to\r\nTD at 2950 m in the Early Jurassic Cook Formation. Some problems were\r\nencountered with coring in the Utsira Formation. In addition the Utsira\r\nFormation was not logged due to a tight spot at 439 m. Otherwise no significant\r\nproblems were encountered during operations. The well was drilled with spud mud\r\ndown to 1152 m and with ANCO 2000 glycol mud from 1152 m to TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eFrom MWD logs and drilling parameters the\r\nUtsira Formation proved not to be developed as a sand reservoir in this\r\nlocation. The well confirmed hydrocarbons in all target levels except for the\r\nEtive Formation of the Brent Group. The top Sognefjord reservoir was\r\nencountered at 1971 m. The upper part of the Sognefjord Formation was thicker\r\nand had better reservoir properties than prognosed. A gas oil contact was\r\nidentified at 1987 m and an oil water contact at 2011 m. Within the range of\r\nuncertainty this was the same OWC as in the well 35/11-4 and there was pressure\r\ncommunication in both the water and the oil zones. The GOC however, differs\r\nbetween the two wells. A total of 14 m of gas pay and 22.6 m oil pay with an\r\naverage porosity of 27% were encountered. The Lower Sognefjord contained oil\r\nand gas with a thin gas cap at 2037 m identified by an MDT sample. The OWC was\r\nat 2054 m, which is the same depth as in well 35/11-4. Top Fensfjord Forma",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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