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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 322,
    "wlbName" : "15/9-1",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 15/9-1 is located in the Sleipner\r\nField. It was drilled on a seismic structure in order to evaluate the Dogger\r\nsandstone (Hugin and Sleipner Formations) of Middle Jurassic age.\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 15/9-1 was spudded with the\r\nsemi-submersible installation Ross Rig on 24 February 1977 and drilled to TD at\r\n3734 m in the Late Triassic Skagerrak Formation. Severe weather occurred on 31\r\nMarch, at 3539 m, when the drill string was hung off in the wellhead and the lower\r\nmarine package disconnected. Drilling commenced on 2 April. When\r\nwashing/reaming back to TD at 3675 m with a bit to open up the rat hole the\r\npipe stuck at 3647m. Jarring/fishing action was unsuccessful and the string was\r\nbacked off at 3507 m. The hole was then plugged back, sidetracked and drilled\r\nto TD. The well was drilled with seawater and hi-vis pills to 415.5 m and with\r\na seawater/conditioned bentonite/spersene mud system from 415.5 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eTop of the Dogger sandstone (Hugin\r\nFormation) was encountered at 3530 m. Log evaluation gave a net productive pay\r\nof 56 m, of which 38 m was gas bearing and 18 m was oil bearing. Lowest\r\nproducible hydrocarbon depth was top of coal bed at 3672 m. Good shows were\r\nrecorded on cuttings in the interval 3633 m to 3687 m, and in porous sandstones\r\non cores from 3545 m to 3667 m. The Jurassic sandstone was cored in nine cores\r\nbetween 3521 m and 3675.5 m. RFT fluid samples were taken at 9 depths in the\r\ninterval 3525.5 m to 3701 m. Most of them recovered traces of condensate or oil\r\ntogether with mud filtrate and gas. Only three samples recovered measurable\r\nquantities of fluid hydrocarbons: 3528.8 m (5 - 15 ml condensate), 3596.5 m\r\n(500 ml condensate), and 3621 m (5 - 15 ml oil). \u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 30\r\nMay 1977 as an oil and gas appraisal.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eTwo DST's were performed. \u003c/p\u003e\r\n\r\n\u003cp\u003eDST 1 perforated the interval 3660 m to\r\n3655 m and flowed 1330 STBOPD (211.5",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}