{
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1037,
    "wlbName" : "30/6-21",
    "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 30/6-21 was drilled on the Alpha North\r\nstructure in the Oseberg fault block. Well 30/6-7 proved oil in the Ness\r\nFormation in 1982. The main purpose of well 30/6-21 was to test the hydrocarbon\r\ncontent in the Oseberg Formations. The well was located in a position where it\r\ncould be utilized as a subsea oil producer/PTS well.\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 30/6-21 was spudded with\r\nthe semi-submersible rig Vildkat Explorer on 22 February 1987 and drilled to TD\r\nat 3100 m in Early Jurassic rocks of the Statfjord Group. Drilling proceeded without\r\nsignificant problems except for some tight hole problems in the upper Oseberg\r\nFormation. The well was drilled with sea water and hi-vis pills down to 664 m\r\nand with Enviromul oil based mud from 664 m to TD.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eTop Brent Group, Ness Formation was\r\npenetrated at 2575 m and proved to be oil filled down to top Dunlin at 2670.5\r\nm. This was a down-to oil contact. The RFT data showed a fluid density of .66\r\ng/cc. The Ness Formation proved not to be a reservoir rock due to lack of sand,\r\nwhile the Oseberg Formation had a net/gross ratio close to 1.0. The Cook- and\r\nStatfjord formations were both water filled. \u00A0\u00A0\u00A0 \u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eFour cores were cut from 2563 m at base\r\nShetland to 2669 m at top Dunlin with close to 100% recovery. RFT fluid samples\r\nwere taken at 2590 m, 2619 m, and 2660 m.\u003c/span\u003e\u003c/p\u003e\r\n\r\n\u003cp class=MsoBodyText\u003e\u003cspan lang=EN-GB\u003eThe well was suspended on 9 April 1987 as\r\nan oil 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\u003eOne Drill Stem Test was performed in the\r\ninterval 2645 to 2657 m in the Oseberg Formation. It produced 342 Sm3 oil and\r",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}