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    "wlbNpdidWellbore" : 1756,
    "wlbName" : "2/7-26 S",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 2/7 26 S is located on the Embla\r\nField in the Central Graben of the North Sea. It was designed to test the pre-Jurassic\r\nsandstones, which had shown commercial quantities of hydrocarbons in the 2/7-20,\r\n2/7-21 S, and 2/7-23 S wells. The objective of the well was to confirm the\r\npresence of hydrocarbon bearing sandstones in the western fault block of the\r\nstructure and to establish the productivity of this reservoir section through a\r\nprogram of well testing and coring. Well location and TD was chosen so that\r\nboth the upper and lower sandstone members of the pre-Jurassic sequence would be\r\npenetrated. The target location was 300 m to the south of the 2/7-9 well at\r\nBase Cretaceous level. The reservoir section was expected to be highly\r\nfractured and over-pressured. Shallow gas was expected since gas had been\r\nencountered in all wells drilled from the template location over the 2/7-20\r\nwell. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 2/7 26 S was spudded with\r\nthe semi-submersible installation West Delta on 20 March 1991 and drilled to TD\r\nat 4848 in Devonian rocks. The well was drilled deviated from a template\r\nlocated over the 2/7-20 well to penetrate the target reservoir section in the\r\nwestern fault block of the Embla structure. Minor shallow gas was detected in\r\nsandy zones with an increase in background gas from 4 to 64 units. Apart from\r\nsome failures when logging and some stuck pipe experiences, drilling proceeded\r\nwithout significant problems. The well was drilled with seawater and hi-vis\r\nsweeps down to 575 m, with KCl/PAC mud from 575 m to 4125.5 m, and with Enviromul\r\noil based mud from 4125.5 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe 9 5/8" casing was set in\r\nclaystones of the Lower Cretaceous, Rødby Formation. The remaining Lower\r\nCretaceous section including Sola, Tuxen and Åsgård Formations was penetrated,\r\nfollowed by a Late Jurassic sequence consisting of 3 m Mandal Formation and 82\r\nm Farsund Formation. The top of the reservoir sands were encountere",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}