{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 314,
    "wlbName" : "15/3-4",
    "wlbHistory" : "\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eGeneral\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 15/3-4 was drilled on the Gudrun\r\nTerrace, east of the 15/3-1 S Gudrun Discovery in the North Sea. The main objective\r\nof the well was to test sandstones of the Late and Middle Jurassic, which were\r\nfound to contain gas and condensate in wells 15/3-1 S and 15/3-3. The secondary\r\ntarget was the Eocene sands where oil shows were encountered in well 15/5-3. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eOperations and results\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWildcat well 15/3-4 was spudded with the\r\nsemi-submersible installation Borgsten Dolphin on 3 October 1981and drilled to\r\nTD at 4259 m in the Triassic Skagerrak Formation. After the 13 3/8" casing\r\nhad been cemented drilling was interrupted for 13 days due to a combination of\r\nbad weather and repairs on the BOP stack. When running in hole at TD the drill string\r\nstuck leaving a fish with top at 4098 m. Hence, no logs were run between 4098 m\r\nand TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe Eocene sands from 1628 to 2025 m\r\n(Grid Formation sands) were found water bearing. The Brent Group was\r\nencountered with top Hugin Formation at 3786 m and top Sleipner Formation at\r\n3856 m. Sandstones in the Brent Group contained oil and gas in four different intervals:\r\n3786 to 3817 m, 3819.5 to 3826.5 m, 3849.9 to 3854.8 m, and 3872.2 to 3876.4 m.\r\nThe four zones were in different pressure regimes. The interval from 3819.5 to\r\n3826.5 m had a low hydrocarbon saturation based on the logs, but the cores from\r\nthis section had good shows with a similar bulk hydrocarbon composition as in\r\nthe uppermost interval. Triassic sands below 4050 m were found water bearing. Good\r\noil shows were seen on all cores from the Hugin Formation, otherwise no shows\r\nwere reported from the well.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eFive cores were cut in the well. Core 1\r\nwas cut in the Grid Formation from 1678 to 1694 m wit",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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