{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 184,
    "wlbName" : "25/11-2",
    "wlbHistory" : "\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 25/11-2 was drilled to appraise the\r\n25/11-1 Balder discovery on the Utsira High in the North Sea. The objective was\r\nto define the continuity and reservoir thickness of the Early Eocene oil\r\nbearing sands in a northward direction from well 25/11-1 and a southward\r\ndirection from well 25/8-1.\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 25/11-2 was spudded with\r\nthe vessel Glomar Grand Isle on 13 September 1970 and drilled to TD at 1823 m\r\nin the Paleocene Sele Formation. No significant problems occurred during the\r\noperations. The well was drilled with seawater/gel down to 175 m, with seawater/Spersene/\r\nXP-20/Salinex from 175 m to 945 m, and with fresh water/ Spersene/XP-20 from\r\n945 to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well penetrated the Utsira Formation\r\nand several Skade Formation sand units and then entered a ca 600 m thick section\r\nof shales belonging to the lower Hordaland Group before top Balder formation was\r\nencountered at 1699 m. The Balder Formation contained several thin Intra Balder\r\nFormation sandstones, of which a seven meter thick sandstone at 1727 m was the\r\nthickest. The sands were oil bearing down to 1747 m. Hermod sandstones were\r\npenetrated from 1780 to 1817 m. They had better reservoir properties than the\r\nIntra Balder Formation sands, but were water bearing without shows.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eNo conventional cores were cut in the\r\nwell. Out of four attempts with the Formation Interval Tester (FIT) three tests\r\nwere seal failures while test no 4, at 1728.5 m, was successful and recovered\r\n0.33 Sm3 gas, 6.9 l oil, and 3.25 l oil and gas cut mud.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was permanently abandoned on 24\r\nSeptember as an oil appraisal.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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