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    "wlbNpdidWellbore" : 3012,
    "wlbName" : "6406/2-4 S",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well\r\n6406/2-4 S was drilled on the southern part of the Lavrans structure in the\r\neastern part of block 6406/2, south of the Smørbukk Field and west of the\r\nTrestakk Field on Haltenbanken. The Lavrans structure is a rotated fault block\r\nwest of the Trestakk Fault on the Halten Terrace. The purpose of the well was\r\nto appraise the southward extension of hydrocarbons in the Garn, Ile and Tofte\r\nFormations in the Lavrans structure, and to test separate closures in the Tilje\r\nand Åre formations. In addition, the well was planned to test the productivity\r\nimprovement achievable by hydraulic stimulation. The well should also penetrate\r\ntwo sandy zones of Turonian (Lysing Formation) and Cenomanian/Albian age (Intra\r\nLange sandstone).\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe deviated\r\nappraisal well 6406/2-4 S was spudded 18 January1997 with the semi-submersible\r\ninstallation "Deepsea Bergen". It was drilled to 4546 m (4457 m TVD)\r\nin the Melke Formation. Mainly because of the weather conditions (41 days of\r\nWOW and weather-related problems) drilling of 6406/2-4 S was significantly\r\ndelayed. Due to environmental restrictions in the area the well had to be\r\nsuspended on April 5 1997 before the well targets had been reached. Well\r\n6406/2-4 S R was re-entered 12 November at depth 4534 m (4446 m TVD), below the\r\n9 5/8" casing shoe in the initial well, and drilled to final TD at 5080 m\r\n(4969 m TVD) in Early Jurassic Åre Formation sediments. The well bores were\r\ndrilled with KCl mud / spud mud down to 1110 m, with KCl mud and "ANCO 208"\r\nglycol from 1110 m to 2260 m, and with oil based "ANCOVERT" mud from\r\n2260 m to final TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eDown to Base\r\nCretaceous Unconformity the stratigraphy was as expected, the prognosis matched\r\nthe experienced stratigraphy well. Below ECU, 154 meters of Upper Jurassic\r\nshales were penetrated before the drilling had to be stopped. Prognosed\r\nthickness of the Upper Jurassic shales was 44 m TVD. High total g",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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