{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "935",
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    "OBJECTID" : 935,
    "wlbNpdidWellbore" : 2719,
    "wlbName" : "30/8-1 SR",
    "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 30/8-1 SR is a re-entry of well\r\n30/8-1 S in the Viking Graben of the North Sea, just west of the Oseberg\r\nFields.\u003c/span\u003e\u003cspan lang=EN-US\u003eThe objective of the original\r\n30/8-1 S well was to \u003c/span\u003e\u003cspan lang=EN-GB\u003etest the hydrocarbon potential of\r\nthe Jurassic Brent Group and Statfjord Formation with the additional commitment\r\nto drill into the Hegre Group or to a maximum depth of 5026 m TVD. Well 30/8-1\r\nS discovered gas/condensate in the Tarbert Formation of the Brent Group, but\r\nwas suspended on 1 March 1995 due to environmental regulations. The re-entry 30/8-1\r\nSR should complete the programme for 30/8-1 S.\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\u003eWell 30/8-1 SR was re-entered and spudded\r\nwith the semi-submersible installation on 14 November 1995 and drilled to TD at\r\n5149 m (4767 m TVD) in the Statfjord Formation. Drilling activities took 9 days\r\nmore than budget, due mainly to a wear-hole in the casing and fishing for lost\r\nlogging tools. A core was attempted at core point 5145 m in the Statfjord\r\nFormation. After coring to 5149 m the core the BHA was pulled, but both core\r\nand barrel was lost in hole. Fishing was unsuccessful and 5149 m became final\r\nTD. The well was drilled water based with ANCO 2000 mud from 4668 m to 4710 m\r\nand with Ancoterm High Temperature mud from 4710 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe Statfjord Formation was the only new formation\r\npenetrated by the re-entry. Based on logs and one core gas was identified in\r\nthe Statfjord Formation down to 4859.0 m (4497 m TVD) (gas-down-to contact). Based\r\non MDT-pressure data, the initial reservoir pressure was interpreted to be 778\r\nBar at 4696.6 m (4356 m TVD). In the Statfjord Formation a total of 98.0 m\r\n(true stratigraphical thickness) net gas pay was interpreted with an average\r\nlog calculated porosity of",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}