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    "wlbNpdidWellbore" : 1536,
    "wlbName" : "34/7-17 A",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 34/7-17 A is a sidetrack to well\r\n34/7-17 on the Vigdis Field on Tampen Spur in the Northern North Sea. In well\r\n34/7-17 the primary target Brent reservoir was encountered 38 m deeper than\r\nprognosed and dry with only scattered oil shows. The 34/7-17 A sidetracked well\r\nthus aimed primarily at the Brent reservoir in an up-dip position above a\r\npossible OWC. According to prognosis Brent should be truncated in this\r\ndirection. A secondary objective was to test the pressure regimes in the\r\nJurassic sequence, including possible depletion associated with pressure\r\ncommunication, previously identified in the nearby Tordis Field.\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 34/7-17 A was spudded with the semi-submersible\r\ninstallation Treasure Saga on 7 April 1991. Kick off point was at 1994 m below\r\nthe 13 3/8? casing shoe in well 34/7-17, in the top of the Shetland Group. The\r\ntarget was located up-dip in a south-easterly direction and the sidetrack was\r\ndrilled deviated from its beginning. The well was drilled without significant\r\ntechnical problems to TD at 2650 m (2557 m TVD) in the Middle Jurassic Etive\r\nFormation of the Brent Group. It was drilled with KCl mud from kick off to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eTop Brent Group, Tarbert Formation, was\r\npenetrated at 2494.5 m (2439.5 m TVD). Truncation was confirmed by the absence\r\nof the Viking Group and erosion into the top of the Brent Group. The Brent\r\nGroup proved to be oil bearing only in the uppermost 6.5 m TVD with a possible\r\nOWC at 2502.5 m (2446 m TVD / 2420 m MSL TVD). Above the reservoir ditch\r\ncuttings recorded a continuous sequence with good traces of oil shows between\r\n2235 and Top Brent Group. The interval 2310 to 2370 m also had oil staining and\r\na strong odour of hydrocarbons. No shows were reported below 2506 m.\u003c/p\u003e\r\n\r\n\u003cp\u003eOne core was cut in the top of the\r\nreservoir between 2597 and 2617. Totally 21 m was cut, of which 20 m was\r\nrecovered.\u003c/p\u003e\r\n\r\n\u003cp\u003eTwo RFT runs were conducted over the\r\nBrent Group. The resulting pressure ",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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