{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1056,
    "wlbName" : "6507/7-7",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 6507/7-7 was drilled on the southern\r\nflank of the Heidrun Field on the Halten Terrace. The primary objective was to\r\nappraise reserves in this part of the field. Further objectives were to obtain\r\ncores from the Tomma Formation (Fangst Group), to evaluate vertical\r\ncommunication between sandstone units in this section, and to obtain a water\r\nsample from the Aldra (Tilje) Formation.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 6507/7-7 was spudded with\r\nthe semi-submersible installation Treasure Hunter on 11 May 1987. At 455 m the\r\ndrill string backed off during a connection. Fishing was unsuccessful and an\r\neighty-meter long fish was left in the hole. The rig was moved ca 20 m\r\neastwards and re-spudded on 13 May. The well was drilled to 1035 m in Pliocene\r\nsediments (Naust Formation) where the 20" casing was run and cemented.\r\nWhile pulling out of the hole with the running string, the cement stinger\r\nunscrewed and fell into the casing. Fishing was again unsuccessful and the\r\ndecision was made to plug and abandon. The well was drilled with seawater and\r\ngel all through.\u003c/p\u003e\r\n\r\n\u003cp\u003eOnly MWD logs are available from the\r\nwell. No cores were cut and no wire line fluid samples taken.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 7\r\nJune 1987 as a junk well. Replacement well 6507/7-8 was spudded two days later.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eNo drill stem test was performed\u003c/p\u003e\r\n\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}