{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1174,
    "wlbName" : "6407/5-1",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 6407/5-1 was situated in Gimsan\r\nBasin, on the eastern limits of the Halten Terrace adjacent to the Trøndelag\r\nPlatform. The primary target for the well was an Early Cretaceous stratigraphic\r\nplay, which had been interpreted seismically as a submarine fan deposit.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 6407/5-1 was spudded with\r\nWilh. Wilhelmsen A/S semi-submersible rig Treasure Scout on 11 December 1987\r\nand drilled to TD at 4306 m in the Middle Jurassic Garn Formation. The well was\r\ndrilled with seawater and hi-vis pills down to 1025 m, with\r\nseawater/gel/lignosulphonate mud from 1025 m to 2053, and with seawater/polymer\r\nmud from 2053 m to TD.á Drilling proceeded without significant problems. No\r\nshallow gas was encountered. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe well penetrated the Early Cretaceous\r\nat 2920.5 m, (prognosed at 2980 m) and a thick argillaceous sequence was\r\ndrilled. There were no indications of sand in Early Cretaceous, or in Late\r\nJurassic. Seismics showed a wedge (the prospect), but there was no sand present.\r\nAn exotic section of Early Cretaceous and Late Jurassic claystones is present\r\nwithin the Early Cretaceous over the interval 3605 m to 3655 m. The logs showed\r\ntwo well-defined hot shales that have not been observed before. This section\r\nwas interpreted as a displaced gravity slide block. The Early Cretaceous\r\nsediments below consist of argillaceous lithologies, again with no reservoir\r\ndevelopment. \u003c/p\u003e\r\n\r\n\u003cp\u003eMinor weak shows occurred in thin\r\nsandstone units over the interval 2370 to 2600 m in the Lange Formation. Weak\r\nshows were also recorded in the shales of the displaced slide block, in the\r\nSpekk Formation, and in the Melke Formation. The sandstones of the Garn\r\nFormation also had weak shows, but without visible stain. The Garn sandstones\r\nhad porosity less than 6 %, and there were no noticed closures at Garn level.\r\nThe Late Jurassic Spekk shales showed good development in the well position\r\nwith a thickness of 247 m, and geochemical analyses s",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}