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    "wlbName" : "1/9-3 R",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 1/9-3 is located in the Feda Graben,\r\nclose to the UK border southwest in the Norwegian North Sea. The primary\r\nobjective of the well was to evaluate the Jurassic sandstones. The secondary\r\nobjective was to appraise and test the hydrocarbon bearing zones of Danian and\r\nMaastrichtian age (Shetland Group) encountered in 1/9-1. The well was drilled\r\nin two phases, of which Phase I is named 1/9-3 and Phase II is named 1/9-3 R.\r\nThis procedure was a requirement from the Norwegian Petroleum Directorate since\r\nDyvi Gamma came directly from the yard and had therefore not accumulated the\r\nexperience needed to drill the high pressure Jurassic well to a planned TD of\r\n5000 m. The re-entry 1/9-3 R was to be drilled with the rig Dyvi Beta.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 1/9-3 was re-entered (1/9-3 R) with\r\nthe semi-submersible installation Dyvi Beta on 27 May 1978 and drilled to TD at\r\n4570 m in the Late Jurassic Haugesund Formation. When running the 9 5/8"\r\ncasing problems occurred with stuck pipe. This resulted in severe delays, but\r\nthe casing was landed at planned depth. In the 8 1/2" hole the progress\r\nwas delayed due to hole problems with high pressure and mud weight combined\r\nwith lost returns. Tight hole and stuck pipe occurred on several occasions. Max\r\nmud weight was 2.04 g/cm. The well was drilled water based, but with several\r\nadditions of diesel from 9 5/8" casing depth and downwards, resulting in 1\r\n- 12 % diesel in the mud at all times below 3835 m.\u003c/p\u003e\r\n\r\n\u003cp\u003eSeveral problems arose during the logging\r\noperations, which in the end resulted in a poor suit of logs over the\r\nreservoir.\u003c/p\u003e\r\n\r\n\u003cp\u003eIn summary the problems were due to\r\nuncontrolled stretch in the logging cable, generally poor log quality,\r\nespecially for FDC/CNL logs, and difficult hole conditions with high pressure/temperature\r\nand excessive sticking. Logs that normally are run in combination had to be run\r\nseparately. This made petrophysical evaluation difficult, and several ",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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