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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 134,
    "wlbName" : "16/7-5",
    "wlbHistory" : "\r\n\r\n\u003cp\u003eWell 16/7-5 is located ca 10 km east of\r\nthe Sleipner Øst field in the North Sea. The primary objective was to test\r\npotential gas bearing Jurassic/Triassic sandstones. \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 16/7-5 was spudded with the\r\nsemi-submersible installation Zapata Ugland on 2 July 1984 and drilled to TD at\r\n2900 m in the Triassic Smith Bank Formation. Due to turning of the permanent\r\nguide base the 30" casing had to be re-landed. No other major problems\r\noccurred during drilling. The well was drilled with gel/sea water down to 170\r\nm, and with seawater/lignosulphonate gel from 470 m to TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe ?Jurassic/Triassic (Skagerrak\r\nFormation) was encountered at 2594, underlying an interpreted one-meter layer\r\nof Draupne shale. A 306 m gross / 120.5 m net (22% average porosity) sequence\r\nof sands was penetrated. No significant hydrocarbon shows were encountered\r\nwhile drilling the well. Electric log analysis also confirmed that the\r\nJurassic/Triassic Sandstone (primary objective) was water bearing. RFT pressure\r\nmeasurements and samples suggested the possible presence of minor amount of gas\r\nin the upper part (2594 m to 2642.6 m) where the pressure gradient was lower\r\nthan the water gradient (below 2662.5 m). However, the pressure readings were\r\nscattered in this interval and very much subject to interpretation.\u003c/p\u003e\r\n\r\n\u003cp\u003eOne core was cut from 2590 to 2603 m (2596\r\n- 2612.5 m logger's depth) in the top of the target sands in the Skagerrak\r\nFormation. Three successful RFT fluid samples were taken. The first sample, at\r\n2691 m, recovered "2800 cc. of light brown fluid, mainly mud filtrate and\r\nmud, no gas, no fluorescence". The second, at 2806.5 m, recovered "8600\r\ncc. of clear medium brown fluid, mainly mud filtrate with a few cc's of gas.\r\nThe fluid had no odour or taste but it had a very pale bluish white\r\nfluorescence". The third, at 2603 m, recovered "8700 cc. of none\r\nclear (turbid) fluid + few cc's of gas. The fluid had no odour or tast",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}