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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 907,
    "wlbName" : "7121/5-2",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 7121/5-2 is located ca 10 km\r\nnortheast of the Snøhvit Field. The purpose of the well was to test the\r\nhydrocarbon accumulation on the Beta-structure in sandstones of the Early to\r\nMiddle Jurassic Stø-formation.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was spudded with the\r\nsemi-submersible installation Ross Isle on 26 May 1986 and drilled to TD at\r\n2543 m in Late Triassic sediments (Rhaetian age). The well was drilled with\r\nseawater and hi-vis pills down to 850 m, with gypsum/polymer mud from 850 m to\r\n1977 m, and with gypsum/polymer/NaCl mud from 1977 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eHydrocarbon bearing Middle Jurassic\r\nsandstones in the Stø Formation were encountered at 2323 m. The gas-bearing\r\nzone extends from 2323 m to 2346 m. The gas zone is sealed from the underlying\r\noil zone by a 6 m thick dense shale layer, which prevents the exact location of\r\na gas/oil contact. The oil-bearing zone extends from 2352 m 2358.5 m. The oil\r\nwater contact at 2358.5 m was picked both from logs and core data. Three cores\r\nwere cut in the Stø formation (2324 m to 2400 m). A total of 9 FMT runs were\r\nperformed; two to obtain pressure points and 7 to obtain segregated samples.\r\nThe first run resulted in 32 pre test pressure points out of 38 attempts, in\r\nthe interval 2323.5 m to 2369.0 m. Eighteen points were taken in the gas zone,\r\n6 in the tight zone, 4 in the oil zone and 4 were in the water zone. The second\r\nrun resulted in 9 pre test pressure points of nine attempts in the interval\r\n2358 m to 2361 m. Seven attempts to obtain segregated samples resulted in 5\r\ngood samples, two at 2355 m, one at 2326 m, and two at 2353.5 m.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 6\r\nJune 1986 as an oil and gas discovery.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eDue to the presence of hydrogen sulphide\r\nin the well, no tests were performed. \u003c/p\u003e\r\n\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}