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    "wlbNpdidWellbore" : 1382,
    "wlbName" : "1/2-1",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 1/2-1 is located in the Central\r\nGraben, about 200 m from the UK border in the North Sea. The main objective was\r\nPaleocene sands of the Rogaland Group. The secondary target was the chalk\r\nformations, although these were possibly not enough fractured to represent a\r\nreservoir. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 1/2-1 was spudded with the\r\nsemi-submersible installation Ross Isle on 20 March 1989 and drilled to TD at 3574 m in the Late Cretaceous Tor Formation. While cutting of core no 7, the\r\nelevators accidentally opened and dropped the string. Two attempts were made to\r\nrecover the string with no success. The hole was sidetracked from 3078.5 m and\r\ncore no 8 was cut. The well was drilled with seawater down to 645 m, with native\r\nmud (water mixed with clays from the borehole itself) from 645 m to1525 m, and\r\nwith seawater from 1525 m to TD. No shallow gas was detected in the hole.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe Forties Formation came in at 3121 m.\r\nThe formation was hydrocarbon bearing down to 3142.5 m as confirmed by both\r\nelectric logs and the RFT pressure gradient. The reservoir sandstones of the\r\nForties Formation showed good to excellent reservoir properties. Average core porosity\r\nwas 18.5% and test permeability was measured to 49 mD. \u003c/p\u003e\r\n\r\n\u003cp\u003eShows on cores were recorded down to core\r\n# 8 where they gradually decreased to zero at 3166 m. From the RFT data two\r\nwater gradients were identified below the oil zone. A shift of 8 psi between\r\nthem suggested the existence of an impermeable barrier around 3160.2 and 3162 m.\r\nCore saturations and fluorescence indicated the potential existence of a thin (4\r\nm) oil zone below this barrier. This zone was not identified from the logs and\r\nwas not evaluated for a test due to lack of data at that point. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe Ekofisk formation was encountered at\r\n3407 m, and the Tor formation at 3514 m. Both formations were water bearing.\u003c/p\u003e\r\n\r\n\u003cp\u003eA total of 8 cores were cut in the\r\nForties Formation, seven in the first hole and th",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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