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    "wlbNpdidWellbore" : 2043,
    "wlbName" : "15/9-19 S",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 15/9-19 S was the first well\r\nto be drilled into the Theta Vest Structure north of the Sleipner East Field.\r\nIt was designed to test gas from the Heimdal reservoir, and to provide\r\ngeological and reservoir data enabling optimal reservoir management. The\r\nsecondary target was the Hugin/Skagerrak Sands, which were to be fully\r\nevaluated if hydrocarbon bearing.\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 15/9- 19 S was spudded with the\r\nsemi-submersible installation Treasure Prospect on 18 November 1992, from Slot\r\n3 of the Loke Discovery template. The well was deviated, penetrating the top of\r\nthe Theta Vest structure approximately 2290 m west northwest of the Loke\r\nTemplate, and reached the target Top Heimdal Formation at 3622.5 m (2427.0 m TVD\r\nRKB). The 12 1/4" section from 1482 m to 3580 m was drilled with\r\nsignificant problems. Trips out of the hole at 2018 m, 3016 m and 3353 m were\r\nperformed to change the bits, due to low penetration rate. The hole packed of\r\nseveral times when tripping out. Problems with lost returns and stuck BHA\r\nfinally led to plugging back and sidetracking from 1493 m. Attempts to\r\norientate the well became progressively more difficult, especially after\r\npenetrating 3308.5 m in the Balder Formation. The Lista Formation was encountered\r\nat 3483 m, and final TD was set at 3580 m, at the edge of the Heimdal Formation\r\ntarget. The well was drilled with bentonite mud down to 531 m, and with\r\nKCL/POLYMER (Phpa/pac) mud from 531 m to TD in the first hole. After\r\nsidetracking oil based mud (Petrofree) was used.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well penetrated 150 m TVD of Tertiary\r\nsands between 1313 m and top Balder Formation at 3302 m. \u003c/p\u003e\r\n\r\n\u003cp\u003eIt was temporarily suspended on 31\r\nJanuary 1993 after setting 9 5/8" casing at 3569.0 m (2394.0 m TVD RKB),\r\nimmediately above the Heimdal sands. No cores were cut and no fluid samples\r\ntaken in this well bore. It is classified as a dry well.\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 perfo",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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