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    "wlbNpdidWellbore" : 1547,
    "wlbName" : "2/7-23 S",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 2/7-23 S was the fourth well drilled\r\non the South Eldfisk (Embla) Field, which consists of a faulted structural high\r\nof assumed Palaeozoic sediments and volcanics. The structure is located on the\r\neastern boundary of the Grensen Nose, a prominent faulted terrace marking the\r\nwestern edge of the Central Graben. The purpose of the well was to test the\r\nnorthward extension of the hydrocarbon bearing sandstones discovered in the\r\n2/7-9 well in 1974 and confirmed by tests in the 2/7-20 and 2/7-21 S wells. If\r\nreservoir was proven, the intent was to complete the well in a manner suitable\r\nfor a later tie-back to a production facility, where it would provide a third\r\ndrainage point for future field development of the Embla Field. \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 2/7-23 S was spudded with\r\nthe semi-submersible installation West Delta on 15 May 1990 and drilled to TD\r\nat 4760 m in indeterminate pre-Jurassic sandstone. The well was drilled from\r\nthe third slot in a three-slot temporary template located over the 2/7-20 well.\r\nThe 2/7-23 S well was deviated to a target location at the Base Cretaceous\r\nlevel 1227 m north of the wellhead. Shallow gas was encountered at 593 m and\r\ncaused some operational problems. The drilling went on without significant\r\nproblems to TD, but during preparations for testing the drill string got stuck.\r\nAttempts to work the pipe free met with no success and the pipe had to be cut.\r\nThe remainder of the drill string could not be retrieved and it was decided to\r\nabandon the well without testing. The well was drilled using KCL/Soltex/Aktaflo-S\r\nwater based drilling fluid down to the 9 5/8" casing depth at 4229 m.\r\nBelow this point and for the remainder of the well Enviromul oil based mud was\r\nused.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well penetrated 4 m of Late Jurassic\r\nshale (Mandal Formation) at 4408 m. The target pre-Jurassic reservoir sands\r\nwere encountered at 4412 m, 74 m TVD deeper than prognosed. The reservoir was\r\noil-bearing. No disti",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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