{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "711",
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    "OBJECTID" : 711,
    "wlbNpdidWellbore" : 1552,
    "wlbName" : "2/8-14",
    "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 2/8-14 was drilled on a complexly\r\nfaulted anticline situated below the western flank of the Valhall Field\r\n(designated as the West Valhall prospect) in the southern North Sea. The\r\nprimary objective was to test a late Jurassic "wedge" sandstone. The\r\nsecondary objective was Late Jurassic, Volgian age, sandstones. The well would\r\nalso determine reservoir quality of the Shetland Group chalk sequences. The\r\nplanned total depth of the well was 5622 m.\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\u003eWildcat well 2/8-14 was spudded with the\r\nsemi-submersible installation West Vanguard on 14 August 1990. No shallow gas\r\nzones were penetrated in the well. The well penetrated high pore pressures at\r\n3176 m in the Lower Cretaceous that required plugging back the well and setting\r\nan 11 3/4" liner. High pore pressures were again penetrated at 4274 m in\r\nthe Late Jurassic. Due to well control considerations, the hole was plugged\r\nback and sidetracked below approximately 3797 m before setting a 7" liner\r\nat 4202 m. Further down high pore pressures again forced a premature end to the\r\nwell with TD at 4397 m in the Late Jurassic (Late Kimmeridgian) Farsund\r\nFormation. The well was drilled with seawater and pre-hydrated bentonite down\r\nto 952 m, with KCl/PHPA/Polydrill mud from 952 m to 2560 m, with AncoTemp\r\nPolydrill/Ancoresin PHPA from 2560 m to 3855 m, and with AncoTemp\r\nPolydrill/Hostadrill PHPA mud from 3855 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTop Shetland Group Chalk (Tor Formation)\r\nwas encountered at 2614 m with a 73% mud gas peak and good oil shows. The Tor\r\nFormation was 3 m thick and the underlying Hod Formation was 225 m thick. The\r\npressures in the Tor and in the Hod chalk formations were depleted due to\r\nproduction from the Valhall Field as expected. Top Tyne Group, Mandal",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}