{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 219,
    "wlbName" : "35/3-4",
    "wlbHistory" : "\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\u003eWildcat wells 35/3-3 and 35/3-4 were\r\ndrilled in the Norwegian sector of the North Sea approximately 50 km west of\r\nMålØy, Norway. The primary target was to test the possible extension of Lower\r\nCretaceous sandstones to the east of those encountered in wells 35/3-1 and\r\n35/3-2. A stratigraphic trap was thought to exist in these sandstones. A\r\nsecondary target was possible sandstones of Early Jurassic age with a possible\r\npinch-out trap.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 35/3-3 was spudded with the\r\nsemi-submersible installation Byford Dolphin on 30 October 1980. It was drilled\r\nand logged to 900 m, then junked because of technical problems running the\r\n20" casing. The rig was moved about 20 meters, and the well was respudded\r\nas 35/3-4.\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 35/3-4 was spudded with the\r\nsemi-submersible installation Byford Dolphin on 30 November 1980 and drilled to\r\nTD at 4089 m in Basement rocks (Caledonian age). A sidetrack was drilled from\r\n3768 m. The well was drilled with seawater and gel down to 457m, with seawater/gel/lignosulfonate\r\nfrom 457 m to 879 m, with lignosulfonate/gypsum/gel mud from 879 m to 2388 m,\r\nand with gel/lignosulfonate/PAC mud from 2388 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well penetrated strata from Tertiary\r\nthrough Jurassic before reaching basement rocks-of Caledonian age. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eHydrocarbon shows were encountered in\r\nLower Cretaceous and Lower-Middle Jurassic sand. The Lower Cretaceous sediments\r\nwere interpreted as submarine fans. RFT measurements in Lower Cretaceous\r\nindicate an upper zone with a gas gradient of 0.4 psi/m, and a deeper zone with\r\na water gradient of 1,54 psi/m. There seem to be no pressure communication\r\nbetween these two zones. Log evaluation in",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}