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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 50,
    "wlbName" : "7120/8-2",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe 7120/8-2 well was drilled on the\r\nAlpha-South structure in the Western part of the Hammerfest Basin. The first well in the block, well 7120/8-1, was drilled on the Alpha North closure in\r\n1981, north of the major east - west fault splitting the two\r\nclosures/structures. This well found gas-bearing sandstones in the Middle to\r\nEarly Jurassic. The primary objective of well 7120/8-2 was to test possible\r\nhydrocarbon accumulations in sandstones of Middle to Early Jurassic age (Stø Formation)\r\nin the Alpha-South structure. \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 7120/8-2 was spudded with the\r\nsemi-submersible installation Neptuno Nordraug on 15 April 1982 and drilled to\r\nTD at 2590 m in Late Triassic sediments (Fruholmen Formation). The drilling of\r\nthe 36" and 26" hole went forth without any problems. After this\r\nseveral problems occurred and 78 days were used to reach TD, 29 days more than\r\nprogrammed. The main hang-ups were: broken 20" csg, partly collapsed\r\n13-3/8" csg, pulled BOP stack, roller system, and stucked stabilizer at\r\n2156 m. The well was drilled with gel/spud mud down to 333 m, with gel/seawater\r\nfrom 333 m to 752 m, and with gel/lignosulphonate/seawater from 752 m to TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eHydrocarbon accumulations were discovered\r\nin sandstone sequences between 2081-2161 m in the Stø Formaton. The reservoir\r\nsandstones showed good to excellent reservoir properties. Gas composition from\r\nthe DST was almost identical to the gas composition of the DSTs performed in\r\nthe 7120/8-1 well. This was also indicated by gas gradients established from\r\nthe RFT pressure points taken in the two wells. RFT pressure points from the\r\ntwo wells also indicated that the water zone most likely is in communication.\r\nOrganic geochemical analyses show TOC in the range 0.7 % to 2.8 % TOC in mudstones\r\nfrom the Early Cretaceous. The kerogen in these samples are Type IV / III with\r\na poor potential, increasing to fair at the base, for gas. Olive black\r\nclaystones o",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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