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    "wlbNpdidWellbore" : 347,
    "wlbName" : "24/12-1",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 24/12-1 is located on the Gudrun\r\nTerrace ca 15 km east of the border to British sector. The purpose of the well\r\nwas to evaluate a seismic closure, named Gamma, in the southern part of the\r\nBlock. The main target was the Middle Jurassic sands. Well 24/12-1 was the\r\nfirst of two phases in drilling the borehole, and this first phase was planned\r\nto reach the Early Cretaceous only. The main target was planned to be reached\r\nin a later re-entry with a different rig than was available at the time when\r\nthe well was scheduled.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well is Type Well for the Skade\r\nFormation and Reference Well for the Grid 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\u003eWildcat well 24/12-1 was spudded with the\r\nsemi-submersible installation Ross Rig on 16 January 1978. At the time when the\r\nwell was to be spudded, Statoil did not have available a rig equipped with a\r\n15000 psi BOP stack and associated equipment. The well was therefore spudded\r\nwith Ross Rig, which was equipped with a 10000 psi BOP. Ross Rig drilled the\r\nwell down to 3966 m in the Early Cretaceous Sola Formation. The 9 5/8"\r\ncasing was set and the well was temporarily plugged and abandoned. The problems\r\nexperienced during PHASE I were primarily related to weather (anchor chain\r\nbreakage and WOW), BOP-stack, and items lost into the hole and the sea. The\r\nwell was drilled with seawater and gel from down to 771 m, with lignosulphonate\r\nmud from 771 m to 2874 m, and with lignosulphonate/lignite/CMC from 7874 m to\r\nTD. From 2870 m 1 % to 8% oil was added to the mud.\u003c/p\u003e\r\n\r\n\u003cp\u003eTertiary sandstone intervals were\r\nencountered in the Utsira Formation (497 m to 730 m), the Skade Formation (825\r\nm to 1007 m), the Grid Formation (1502 m to 1660 m), and in the Paleocene\r\nHeimdal Formation (2326 m to 2700 m). No shows were encountered during drilling,\r\nbut post-well organic geochemical analyses showed one cuttings sample from 2860\r\nm to 2890 m to contain significant amounts of light hydrocarbons combined with\r\na comparati",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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