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    "wlbNpdidWellbore" : 2326,
    "wlbName" : "34/7-23 A",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\u003cp\u003eExploration well 34/7-23 A was drilled in the H-Vest\r\nprospect as a sidetrack to well 34/7-23 S, located on the Vigdis Field on\r\nTampen Spur in the Northern North Sea. The main objective was to test for Top\r\nDraupne Sandstone reservoir presence within the Top Draupne Sequence of\r\nPortlandian and Ryazanian age and to test for an oil water contact. Secondary\r\nobjective was to test for reservoir presence and hydrocarbons in a seismic\r\nwedge in the middle Draupne Sequence. Additional targets were lowermost Late\r\nCretaceous and intra Oxfordian (Intra-Heather Formation) 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\u003eWell 34/7-23 A was kicked off from well\r\n34/7-23 S on April 8, 1994. The kick off point was at 2358 m (1968.5 m TVD) in\r\nthe upper part of the Shetland Group. The well was drilled westward deviated to\r\nTD at 3412 m (2769 m TVD) using the semi-submersible installation Vildkat\r\nExplorer. Drilling went without problem. During logging operations the FMT tool\r\ngot stuck at 3220 m and 60 hrs were spent fishing for it. The well was drilled with\r\nKCl mud with a polyalkyleneglycol additive (BP DCP 208) m from kick-off to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eIn the Shetland Group claystones with\r\nlimestone beds were penetrated. The condensed Cromer Knoll Group consisted of\r\nmarls, limestones and minor claystones. The Viking Group was encountered at\r\n3202.9 m (2619 m TVD). The topmost section was oil bearing Intra Draupne\r\nFormation sandstone from 3202.9 to 3246 m (2619 - 2649.1 TVD, 30.1 m gross).\r\nThis sandstone interval, which was the only sandstone interval encountered\r\nwithin the Draupne Formation, proved an ODT at 3246 m (2649.1 m TVD). No OWC\r\nwas identified on the logs or with the FMT-measurements. The Intra Draupne Formation\r\nSandstone reservoir had an estimated average log porosity of 22.4% and an estimated\r\naverage water saturation of 11.4%. The net gross ratio was 0.93. Below the\r\nreservoir, the Draupne Formation consisted of siltstones and claystones. The\r\nMiddle to Late Jurassic Heathe",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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