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    "wlbNpdidWellbore" : 3113,
    "wlbName" : "15/5-6",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 15/5-6 was drilled on the Glitne\r\nfield in the North Sea. The main objective was to appraise the 15/5-5 Glitne\r\noil discovery in the Heimdal Formation. The secondary objective was to\r\ninvestigate the oil potential of a separate "Intra Lista Sandstone"\r\nwhich had been mapped as a sequence lapping onto the main Heimdal Formation. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 15/5-6 was spudded with\r\nthe semi-submersible installation Byford Dolphin on 20 June 1997 and drilled to\r\nTD at 2725 m in the Paleocene Ekofisk Formation. The drilling went according to\r\nplan. However, problems due to poor hole conditions were encountered during\r\nwire line logging at TD. The well was drilled with seawater and hi-vis pills\r\ndown to 1002 m and with KCl/polymer/glycol mud from 1002 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe top of the main Heimdal reservoir was\r\npenetrated 39 m TVD deeper than prognosed. The top corresponded seismically to\r\nthe reflector that pre-drill was interpreted as the top "Intra Lista\r\nSandstone", so the general consensus is now that the reflector is actually\r\nthe top Heimdal Formation and that the "Intra Lista Sandstone"\r\nsequence is not present.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe uppermost part of the Heimdal\r\nreservoir was oil bearing, exhibiting good reservoir properties. The OWC was\r\nfound at 2185 m (2160 m TVD MSL), equivalent to the contact in well 15/5-5. No\r\nother parts of well 15/5-6 contained hydrocarbons or shows of hydrocarbons.\u003c/p\u003e\r\n\r\n\u003cp\u003eOne core was cut in the upper part of the\r\nHeimdal Formation. No fluid sample was taken in the well.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 16\r\nJuly 1997 as an oil appraisal.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was not production tested due to\r\nthe limited oil column and no "Intra Lista Sandstone" being present.\u003c/p\u003e\r\n\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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