{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "819",
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    "wlbNpdidWellbore" : 1978,
    "wlbName" : "15/12-9 S",
    "wlbHistory" : "\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eGeneral\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eWell 15/12-9 S was drilled on the Varg\r\nField in the North Sea. The Varg Field reservoir is in Upper Jurassic sandstones\r\nat a depth of approximately 2700 metres. The Varg Field is segmented and\r\nincludes several isolated compartments with varying reservoir properties. The\r\nwell was drilled from a location near to the Varg A and Petrojarl A production\r\ninstallations and targeted a southern compartment in the Varg structure. The\r\nobjective for the well was to prove hydrocarbons in Late Oxfordian sandstone\r\nand to reduce the uncertainty in the reserve estimate for this part of the Varg\r\nField.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eOperations and results\u003c/span\u003e\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eAppraisal well 15/12-9 S was spudded with\r\nthe semi-submersible installation Deepsea Bergen on 17 July 1992 and drilled to\r\nTD at 3848 m (3213 m TVD) in the Triassic Skagerrak Formation. The well was\r\ndrilled deviated from 623 m with a sail angle of ca 56 ° and then vertical\r\nagain from ca 2400 m TVD through the target reservoir to TD. The well was\r\ndrilled with seawater down to 620 m, with KCl/polymer mud from 620 mto 3226 m,\r\nand with Ancotemp/bentonite mud from 3226 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well penetrated top reservoir, the\r\nOxfordian sandstones, at 3385 m (2750 m TVD). The reservoir was oil-bearing\r\ndown to a well-defined  OWC at 3501.5 m (2867.0 m TVD). Seven cores were cut with 100% recovery. Core 1\r\nto 6 were cut in the interval 3689 m to 3555 m and core 7 was cut from 3649.5 m\r\nto 3668.0 m. The core to log depth shift was -2.45 m for core 7; for the other\r\ncores the core depth was equal to the logger’s depth. Two segregated FMT oil samples were taken at 3498 m. Oil shows continued down to 3545m\r\n\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well is classified an oil appraisal\r\nwell. It was suspended on 8 October 1992 and was lat",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}