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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 1371,
    "wlbName" : "2/4-15 S",
    "wlbHistory" : "\r\n\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe primary purpose of well 2/4-15 S was\r\nto control and kill the underground blow out in well 2/4-14. Well 2/4-15 S was\r\nplanned deviated from a location ca 1 km south of the 2/4-14 location to\r\nintersect with the 2/4-14 well bore below the bottom hole assembly that had\r\nbeen left in this hole. The well would serve several possible uses: \u003c/p\u003e\r\n\r\n\u003cp\u003e- Assist in killing 2/4-14 below the BHA.\u003c/p\u003e\r\n\r\n\u003cp\u003e- To check and verify the extent of\r\nunderground pressure charging, zone isolation and underground blowouts, and to\r\ncure and verify possible cross flows.\u003c/p\u003e\r\n\r\n\u003cp\u003e- To serve as an emergency relief well to\r\ndynamically kill an uncontrolled blow out in well 2/4-14.\u003c/p\u003e\r\n\r\n\u003cp\u003e- To be used as an exploration well if\r\nthe top intervention was successful.\u003c/p\u003e\r\n\r\n\u003cp\u003eShallow gas was predicted at 611 m where\r\na seismic anomaly corresponds to a gas bearing sand layer in well 2/4-14\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 Relief well 2/4-15 S was spudded\r\n31 January 1989 by the semi-submersible installation Treasure Saga. The well\r\nwas spudded 1182 m south of the 2/4-14 spud location and drilled to 4962 m\r\nwhere it intersected with the 2/4-14 well bore. This point is recognized as TD\r\nof the well. The well was drilled with sea water/gel mud down to 920 m, with\r\nKCl mud from 920 m to 3867 m, and with Hi-Temp polymer mud from 3867 m to TD.\r\nShallow gas was encountered at 611 m as prognosed. Thin gas-bearing sands were\r\nseen on the resistivity MWD log also at 525 m and at 627 m. Drilling proceeded\r\nwith significant problems due to rich smectite content between 1800 and 2300 m.\r\nThe drill string got stuck twice, backed off, and after unsuccessful fishing,\r\ntechnical sidetracks were performed. On 1 May 1989, when drilling the 12\r\n1/4" section in well 2/4-15 S, well 2/4-14 was re-entered with the jack up\r\nrig Neddrill Trigon. Both wells were now involved in the killing operations\r\n(see well history for 2/4-14 R). When drilling 2/4-15 S at around 4962 m, just\r\nprior to pulling ",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}