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    "wlbNpdidWellbore" : 423,
    "wlbName" : "34/4-3",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eExploration well 34/4-3 is located in the\r\nMarulk Basin north-northwest of the Snorre Field. It was drilled as the third\r\nwell on the Gamma Structure and had a wedge structure between the Base\r\nCretaceous Unconformity and the Late Jurassic Unconformity as primary target.\r\nSecondary objectives were to penetrate the Brent Equivalent and the Statfjord\r\nformation. The well is located on the downthrown side of a NE-SW trending major\r\nfault, and the sealing nature of this fault was critical for a closure of the\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 34/4-3 was spudded with the\r\nsemi-submersible installation Dyvi Alpha on 16 October 1981 after waiting on\r\nlocation for two weeks due to bad weather. The 26" section was drilled\r\nwith a 21 1/4" BOP installed but after pulling the riser and the BOP a\r\n26" bit was run in the hole since the underreamer did not perform.\r\nDrilling of the 17 1/2" section was delayed by nearly two weeks due to the\r\n18 3/4" BOP not meeting requirements. During drilling of the 12 1/4"\r\nsection electrical problems on the draw works as well as mud pump breakdowns\r\nand high pressures was experienced. Drilling the 8 1/2" section included 4\r\ncore runs, killing a water/methane kick at 3555 m, changing leaking seals on riser\r\nand two intermediate log runs. TD was reached at 4460 m in Late Triassic\r\nsediments. The well was drilled with seawater/bentonite/gel down to 516 m, with\r\ngel/gypsum from 512 m to 1019 m, with gypsum/polymer from 1019 m to 2209 m, and\r\nwith lignosulfonate mud from 2209 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eA methane gas/water kick occurred at 3550\r\nm when the first Late Jurassic sandstone stringer was entered, giving 21 %\r\ntotal gas. A more continuous Late Jurassic sand was drilled into at 3565 m. Two\r\ncores (18 m) were cut in this 27 m thick sandstone sequence. The cores consist\r\nof shallow marine laminated shale/silt/sandstone. The sandstone is grey, very\r\nfine to fine grained with average porosity 10%",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}