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    "wlbNpdidWellbore" : 1643,
    "wlbName" : "7229/11-1",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 7229/11-1 was\r\nthe first well drilled in Production Licence 183 following the interpretation\r\nof a 3D seismic survey acquired in 1991. The well is situated on the\r\nnortheastern part of the Finnmark Platform. The target of the well was the\r\n\"Castor\" prospect, consisting of two Permian-Carboniferous (Sakmarian\r\nto Asselian age) carbonate build-ups confined in combined dip-closed and\r\nstratigraphic traps. The objectives were to test the hydrocarbon potential of\r\nthe carbonate build-ups, referred to as Carbonate 1 and Carbonate 2\r\nrespectively, to acquire additional information on the Permian-Carboniferous of\r\nthe Finnmark Platform, and to calibrate the seismic expression of the\r\nbuild-ups.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eExploration well was\r\nspudded with the semi-submersible installation \"Ross Rig\" on 9 August\r\n1993 and drilled to a total depth of 4630 m in limestone of Middle - Lower?\r\nCarboniferous age. The well was drilled with sea water and hi-vis pre-hydrated\r\nbentonite pills down to 1098 m, with KCl / polymer mud from 1098 m to 3012 m,\r\nand with a high-temperature KCl / Polymer mud from 3012 m to TD. The soft\r\nseabed did not present anchoring problems. No shallow gas was encountered.\r\nDrilling problems were experienced in the interval 339 m & 379 m. A seismic\r\nmarker (black loop) corresponds to the top of this interval, which is\r\ninterpreted as a boulder rich sequence. Drilling problems could have been due\r\nto boulders to fall into the hole and become wedged, thus causing sticking. The\r\npredicted carbonate build-up targets were encountered but were not reservoir\r\nfacies. Carbonate 1 was confirmed to be build-up / build-up flank facies;\r\nCarbonate 2 was found to be carbonate platform facies. No hydrocarbon shows\r\nwere encountered in the well. Nine cores totalling 180.9 metres length were successfully\r\ncut and retrieved from the Permian-Carboniferous. No hydrocarbon shows were\r\nencountered in the well. The well was plugged and abandoned as a dry hole on 15\r\nDec",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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