{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1030,
    "wlbName" : "25/1-8 SR",
    "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\u003eThe Frigg Field was discovered by well\r\n25/1-1 in 1971 and set in production in May 1977. Well 25/1-8 S was drilled in\r\nthe summer of 1985 to monitor changes in gas/fluid contact, uncover\r\npermeability barriers and pressure gradients in the Frigg Formation, refine the\r\ngeological model, and provide ties for seismic interpretations. Before\r\nproduction started the Frigg Field fluid contacts were: OWC = 1955.9 m TVD MSL\r\nand GOC = 1948.2 m TVD MSL. In July 1985 in 25/1-8 S found the oil-leg to be\r\nall swept with the exception of a very thin oil-layer lifted to 1903.5 m TVD\r\nMSL, 2 m below the new gas/liquid contact, which was now a gas/water contact\r\n(GWC) at 1901.3 m TVD MSL. The objective of the re-entry well 25/1-8 SR was to\r\nmonitor further changes in the GWC.\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 25/1-8 S was re-entered\r\n(25/1-8 SR) with the semi-submersible installation Nortrym on 14 February 1987.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe GWC was found at 1898.3 m TVD MSL,\r\nonly 3.2 m higher than in July 1985. The slow water rise was attributed to a\r\nthin shale layer that acted as a barrier for effective drainage.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eNo cores were cut and no wire line fluid\r\nsamples were taken.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was suspended on 18 February\r\n1987 for later re-entry and monitoring of the reservoir parameters. It is\r\nclassified as a gas appraisal well.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cb\u003e\u003cspan lang=EN-GB\u003eTesting\u003c/span\u003e\u003c/b\u003e\u003cspan lang=EN-GB\u003e \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eNo drill stem test was performed.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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