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    "wlbNpdidWellbore" : 390,
    "wlbName" : "30/7-7",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe main objective of the well was to\r\ntest the SE prospect on the 30/7 block. The objective of the well was to test\r\npossible sandstone reservoirs of Jurassic age, which were predicted to occur-in\r\na large structure (150 km2) at the Kimmerian unconformity) located on the\r\neastern flank of the Viking basin. The specific targets were possible\r\nturbiditic sandstone deposits within a thick Late Jurassic sequence, Middle\r\nJurassic Brent Formation sandstones, and Early Jurassic Statfjord Formation\r\nsandstones. The well was planned to penetrate 50 m into the Statfjord Formation\r\nto approximately 5250 m. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe well is Reference Well for the Cook\r\nFormation.\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 30/7-7 was drilled between\r\nDecember 16th 1978 and May 30th 1979 with the rig Treasure Seeker. It reached\r\nTD at 5127 m in the Early Jurassic/Late Triassic Statfjord Formation. 34.5% of\r\nthe total rig time was lost time due to fishing, waiting on weather, waiting\r\nfor replacement of equipment, and hole problems. The problem that had most\r\nserious consequences for the geological program occurred while reaming from\r\n5114 m to 5125 m where the string got stuck. After 9.5 days of fishing for the\r\ndrill string it was finally backed of at 4804 m. At this point it was decided to\r\nabandon the well leaving the fish in the hole. Before this happened the well\r\nhad been logged down to 5122 m, but the fish made it impossible to test the\r\nStatfjord Formation sandstone. The well was drilled with Seawater/gel/hi-vis\r\npills spotting LCM pills as needed down to 763 m and with a\r\nSpersene/XP20/Drispac mud with 0 % to 4% oil and LCM pills as needed from 763 m\r\nto TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eSandstone levels interbedded with shales\r\nwere encountered below 2187 m in the Tertiary. They were mainly developed\r\nbetween 2216 and 2320 m. Some calcareous levels in the Maastrichtian limestones\r\nbetween 2531 and 2575 m could be considered as reservoirs. Limestone stringers\r\nin the Turonian calcareous section from",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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