{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 296,
    "wlbName" : "7/12-3",
    "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 7/12-3 was drilled as an appraisal\r\nwell on the western flank of the 7/12-2 Ula Discovery in the North Sea. \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 7/12-3 was spudded with\r\nthe semi-submersible installation Norskald on 5 April 1977 and drilled to TD at\r\n3710 m in Late Jurassic sediments. The drilling, coring and logging of the well\r\nwere of a routine nature. Plugging of the flow lines and screens by hydrating\r\nclays while drilling the 17-1/2" hole caused delays and the loss of considerable\r\nquantities of mud. Rates of penetration were less than anticipated in the Lower\r\nCretaceous and Upper Jurassic mudstones/ shales. Ninety-four hours were lost\r\nthrough weather delays during the course of the well. The well was drilled with\r\nfresh water and gel down to 471 m and with Lime/Drispac mud from 471 m to TD. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eCore, log and R.F.T. analyses proved the\r\nwell to have penetrated the Jurassic reservoir discovered in well 7/12-2\r\nbeneath the oil water contact.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eOne core was cut in the Jurassic section,\r\nfrom 3612.2 to 3628.6 m. An RFT water sample was taken at 3683 m\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was plugged back for sidetracking\r\non 3 June as a dry well.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eTesting\u003c/span\u003e\u003c/b\u003e\u003cspan lang=EN-GB\u003e \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eNo drill stem test was performed. \u003c/span\u003e\u003c/p\u003e\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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