{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1459,
    "wlbName" : "25/2-13",
    "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\u003eWell 25/2-13 was drilled in the central\r\npart of the Viking Graben, east of the Frigg area. The block straddles the\r\neastern flank of the graben and the north-western part of the Utsira High. It\r\nwas the first appraisal well on the 25/2-5 discovery, which discovered oil in\r\ndifferent reservoirs of the Vestland Group and the Statfjord Formation. The\r\nstructure is a north-south trending horst, which is located on a terrace in the\r\nsouthern part of the block. Well 25/2-13 was drilled close to a major normal\r\nfault bounding the structure. The main objective was to evaluate the western\r\npanel. The well should test the fluid columns in both the Vestland Group and\r\nthe Statfjord Formation, obtain data for fluid characterisation and\r\nproductivity, and try to define the hydrocarbon contacts of the reservoirs.\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 25/2-13 was spudded 6 June\r\n1989 by the semi-submersible installation West Vanguard drilled to TD at 3909 m\r\nin the Triassic Smith Bank Formation. The well was drilled to 13" 3/8\r\ncasing point (2043 m) without problems, but at 2178 m the bit got stuck and a\r\nsidetrack was needed. The sidetrack was kicked off from 2070 m. The first\r\nattempt failed, but the second was successful. During coring of the Vestland Group,\r\nthe core barrel was lost in hole and a second sidetrack was decided after\r\nunsuccessful fishing. This sidetrack was kicked off from 3306. The mud that was\r\nused in the Jurassic section (3318 - 3887 m) was an FCL type mud which was\r\nbased on fresh water with added bentonite, polymers, lignosulfonate and barite.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTop Vestland Group came in at 3342 m as\r\nprognosed, and with mobile hydrocarbons in two layers; oil in the top ca 40 -\r\n60 m of the reservoir with an unclear OWC in the interval 3382 - 3415 m, a",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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