{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
  "id" : "43",
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    "wlbNpdidWellbore" : 44,
    "wlbName" : "1/9-6 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 1/9-6 S was drilled on the\r\nnorth-west flank of the Tommeliten Gamma structure in the Feda Graben in the\r\nsouthern North Sea. The main objective was to appraise the Tommeliten Field.\r\nThe well was drilled deviated due to the planned use of this well as a\r\nproduction well. The main targets were the Ekofisk and Tor formations. \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 1/9-6 was spudded with the\r\nsemi-submersible installation Sedco 703 on 21 March 1982. Drilling of the\r\n36" and 26" holes went without incident. There was some difficulty in\r\ngetting logging tools in the 17 1/2" hole. Gumbo problems occurred while\r\ndrilling the 12 1/4" hole and both open hole and cased hole logging runs\r\nwere plagued with tool failures. Differential sticking also occurred while\r\ndrilling the bottom part of the 8 1/2" hole. TD was set 3880 m, 99 m into\r\nthe Late Cretaceous Hod Formation. After retrieving the RFT the well began\r\nflowing and sloughing large amounts of shale below the 9 5/8" shoe. While\r\ncirculating and reaming to TD, the pipe became stuck many times due to shale\r\nsloughing above the bit. A bit and bit sub were left in the hole during these\r\nhole problems, and were never recovered. The well was drilled with\r\n"native" mud/seawater down to 1471 m and with polymer/dispersed\r\nsolids/lignosulphonate/seawater from 1471 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTop Ekofisk Formation was penetrated at\r\n3411 m (3110 m TVD) and top Tor Formation at 3516 m (3199 m TVD). Both\r\nformations were gas/condensate bearing. No other permeable section in the well had\r\nindications of hydrocarbons.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eA total of 14 cores were cut in the interval\r\n3415.7 - 3619 m in the Ekofisk and Tor formations. Problems with jamming and",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}