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    "wlbName" : "25/4-4",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell\r\n25/4-4 was drilled on the NW flank of the structure of the Heimdal structure,\r\nnorth of well 2 5/4-1. The objective was to appraise the Heimdal reservoir\r\nextension, to assess its characteristics, and to sample it.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations\r\nand results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal\r\nwell 25/4-4 was spudded with the semi-submersible installation Odin Drill on 16\r\nMay 1975 and drilled to TD at 2681 m in the Early Paleocene Våle Formation.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well\r\nencountered 323 m of Heimdal sands with top at 2133 m, and 157 m of Ty sands at\r\n2517 m. The Heimdal Formation consisted of sand with shale interbeds. The sand\r\nwas generally clean, with a few sand-shale laminae. It was hydrocarbon bearing\r\nwith a gas/oil contact at 2172 m, and the oil/water contact at 2175 m in\r\naccordance with what was expected. The Ty sand was water bearing.\u003c/p\u003e\r\n\r\n\u003cp\u003eFour\r\ncores were cut from 2142 m to 2170 m in the Heimdal Formation. The recovery\r\nvaried from 0.5 m to a full 9 m barrel. Poor recovery was mainly due to very\r\nunconsolidated sand. Three Formation Interval Tests were conducted. FIT1\r\nsampled oil from 2173.5 m, FIT2 sampled gas from 2171.4 m, and FIT3 sampled\r\nsalt water from 2190 m.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well\r\nwas permanently abandoned on 7 July as a gas and oil appraisal.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eA drill\r\nstem test was conducted from the interval 2134 m to 2143 m in gas zone of the\r\nHeimdal Formation. It produced 676300 Sm3 gas and 95.8 Sm3 condensate/day. \u003c/p\u003e\r\n\r\n\u003c/html\u003e\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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