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    "wlbNpdidWellbore" : 1177,
    "wlbName" : "7226/11-1",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eExploration well 7226/11-1 is located on\r\nthe Norsel High in the southeastern part of the Bjarmeland Platform area, close to the\r\nsouthwestern margin of the Nordkapp Basin. The well was designed to test Early\r\nJurassic/Late Triassic sandstones, Base Anisian sandstones and Permian\r\ncarbonates. The well should also test the geophysical and structural\r\ninterpretation and improve the geological, geochemical and paleontological\r\nunderstanding of this new area in the Barents Sea. Planned TD was 4620 m,\r\npenetrating the Early Permian Unconformity.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well is Reference Well for the Ulv,\r\nPolarrev, and Ørn formations.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 7226/11-1 was spudded with\r\nthe semi-submersible rig Ross Rig 22. October 1987 and drilled to TD at 5200 m\r\nin metamorphic basement rocks. A 9 7/8" pilot hole was drilled to 720 m\r\nwithout a riser. During opening of the pilot hole to 26" hole, an angle of\r\n5° was built up at approximately 500 m and a new hole was drilled next to the 9\r\n7/8" pilot hole. The 20" casing shoe was set at 698 m. Severe\r\nproblems were experienced in the 12 1/4" section with four twist-offs (3\r\ntimes core barrel and once jar). There was no shallow gas in the hole. The well\r\nwas drilled with seawater and hi-vis pills down to 702 m, with gypsum / polymer\r\nmud from 702 m to 2515 m, and with gel / lignosulphonate mud from 2515 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eA thin (34 m) Early Jurassic Tubåen\r\nFormation sandstone was encountered at 1202 m, 19 m higher than expected.\r\nDrilling data and logs indicated that this reservoir was water bearing. In the\r\nLate Triassic Fruholmen Formation only 12.3 % net sand with an average 17.7 %\r\nporosity was estimated. Expected bottom Anisian sandstone reservoir at 2330 m\r\nwas not developed as good as expected. Only thin sandstone stringers were encountered\r\nbetween 2280 m to 2310 m without good indications of hydrocarbons. It was\r\ndrilled to 2913 m where a sudden increase in drilling velocit",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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