{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "306",
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    "OBJECTID" : 306,
    "wlbNpdidWellbore" : 311,
    "wlbName" : "15/3-2 R",
    "wlbHistory" : "\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003e \u003c/span\u003e\u003c/p\u003e\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 15/3-2 R is a re-entry of well\r\n15/3-2 in the Vilje sub-basin structural element of the south Viking Graben of\r\nthe North Sea. The primary well 15/3-2 was drilled by "Polyglomar\r\nDriller", which was equipped with 10.000 psi WP 18 3/4" BOP-stack.\r\nThis well was suspended on 24 January 1977 with 9 5/8" casing set at 4248\r\nm, in the Late Jurassic Draupne Formation. The re-entry was drilled with the\r\nPentagone 84, equipped with a 15000 psi WPI 11" BOP stack, necessary to drill\r\nand test high-pressure Jurassic reservoirs. The objective of well 15/3-2 R was\r\nto test the Jurassic reservoirs, including the Dogger - Lias sections.\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 15/3-2 was re-entered with the\r\nsemi-submersible installation Pentagone 84 on 26 July 1977 after some initial\r\nproblem with connecting to the wellhead on the sea floor. An 8 11/32" hole\r\nwas drilled down to 4990 m when the drill string parted. In spite of an\r\nextensive fishing operation, the fish had to be left in hole. Top fish is at\r\n4742 m. A sidetracking operation was performed trying to bypass the fish, but\r\nalso this operation failed and 4990 became TD of the well. The well was drilled\r\nwater based with LFC-LC mud from re-entry point to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe Draupne Formation extended from 4236\r\nm down to 4352 m, making up a total of 116 m. Geochemical analyses proved TOC\r\nfrom 3 to 7 %wt and vitrinite reflectance analyses indicated middle oil window\r\nmaturity (%Ro = 0.75). Four Intra Heather Formation sandstone reservoirs were\r\ndrilled in the Jurassic section, varying in gross thickness from 15 to 112 m. According\r\nto logs the two upper ones, 112 and 64 m thick, were hydrocarbon-bearing, but\r\nwith bad characteristic",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}