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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 2931,
    "wlbName" : "34/4-9 S",
    "wlbHistory" : "\r\n\r\n\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 34/4-9 S was drilled on the northern\r\npart of the Western Central Fault Block (WCFB) on the Snorre Field in the\r\nnorthern North Sea. This is an appraisal well and the main objectives were to contribute\r\nto the technical basis for Snorre North PDO and to reduce the uncertainties in\r\nreservoir quality. The reservoir level in this part of Snorre is the Late\r\nTriassic Lunde Formation.\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\u003eAppraisal well 34/4-9 S was spudded with\r\nthe semi-submersible installation Scarabeo 5 on 8 January 1997 and drilled to\r\nTD at 3440 m (3388 m TVD) in the Late Triassic Lunde Formation. The well was\r\ndrilled vertical down to 2700 m, from where it built angle up to 24.9 deg at TD\r\nwith maximum 29.6 deg at 3370 m. The well was drilled with spud mud down to\r\n1235 m, with KCl mud from 1235 m to 1866 m, and with Ancovert oil based mud\r\nfrom 1866 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTop of the reservoir ( L01) was\r\nencountered at 2512.5 m, 12.5 m deeper than prognosed. The conventional core\r\nindicated oil down to 2621.5 m (2596 m TVD MSL) (oil stained sandstones), and\r\nthe interpretation of pressure gradients (MDT data) indicate an OWC at 2619 m (2594\r\nm TVD MSL). However, the wire line logs indicate high water saturation in the\r\nsandstone from 2616.5 - 2622 m (2590.5 - 2597 m TVD MSL) with deepest oil down\r\nto 2608 m (2583m TVD MSL). The oil-water contact is therefore set to 2616 m (2590\r\nm TVD MSL). \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThree cores were cut consecutively over a\r\n209 m long section from 2515 m to 2724 m in the upper part of the Lunde formation\r\nwith a total recovery of 99.7 %. The core-to-log shifts were -0.61 m for core\r\n1, -1.11 m for core 2, and -0.36 m for core 3. A 2 3/4 gal fluid sample was\r\nobtained at 2583 m. Laboratory measurements ind",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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