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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1699,
    "wlbName" : "6407/7-5",
    "wlbHistory" : "\r\n\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe Njord Field is situated in the\r\nsouthern part of the Haltenbanken area in a down faulted position relative to\r\nthe Trøndelag Platform and the Frøya High. Oil had been encountered in previous\r\nwells on Njord in the Ile, Tilje, and Åre Formations. Well 6407/7-5 is located on\r\nthe North II fault segment on the North Flank of the Njord structure. The main\r\nobjectives for the well were to test the resource potential of the Northern\r\nFlank, to clarify the number of production and injection wells needed for\r\ndevelopment, and to verify the reservoir quality and the sealing potential of\r\nfaults. The pore pressure gradient was expected to be maximum 1.54 rd in the\r\nreservoir. Shallow gas warnings were given for 6 levels down to 650 m. Planned\r\nTD was 3725 m \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 6407/7-5 was spudded with the\r\nsemi-submersible installation Transocean 8 on 15 February 1991 and drilled to\r\nTD at 3725 m in Early Jurassic sediments of the Åre Formation. After coring the\r\ninterval 3168 - 3215m the drilling assembly got stuck when running in the hole.\r\nFishing the drilling assembly failed and the well was subsequently plugged back\r\nand side tracked from 3080 m. Indications of shallow gas were found in two of\r\nthe six warned levels. The well was drilled with spud mud down to 1112 m and\r\nwith KCl/polymer mud from 1112 m to TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe reservoir sandstones of the Ile, Ror\r\nand Tilje Formations were found to be water bearing. RFT pressures and one\r\nsegregated sample indicated very poor permeabilities in the sandstone intervals\r\ntested. From the data it was not possible to determine whether pressure\r\ncommunication exists between 6407/7-5 and 6407/7-3.\u003c/p\u003e\r\n\r\n\u003cp\u003eSporadic oil shows were recorded on\r\nsandstone stringers in the Nise Formation below 2267 m. Weak oil shows were\r\nrecorded on claystones, limestones and sandstones of the Lysing Formation\r\nbetween 3000 - 3084 m. This interval also had high gas readings with gas peaks\r\nup to 10%. Some oil shows were s",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}