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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 85,
    "wlbName" : "7120/7-1",
    "wlbHistory" : "\r\n\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 7120/7-1 is located on the\r\nRingvassøy-Loppa Fault Complex, in the Snøhvit Field area. It was drilled to\r\ntest possible hydrocarbon accumulations in sandstones of Middle to Early\r\nJurassic age in the Alpha structure. \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 7120/7-1 was spudded with the\r\nsemi-submersible installation Neptuno Nordraug on 31 July 1982 and drilled to\r\nTD at 2839 m in Late Triassic sediments of the Tubåen Formation. The 26"\r\nsection was first pilot-drilled with a 12 1/4" bit to 752 m. Logging of\r\nthe pilot hole confirmed a gas bearing sandstone from 375 to 392 m and it was\r\ndecided to set the 20" casing above the sand and then set the 13-3/8"\r\ncasing around the planned 20" casing shoe depth. Some gas problems delayed\r\nplug-back operations, but otherwise operations went smoothly, and the well was\r\nabandoned 4 days ahead of schedule. The well was drilled with seawater/gel down\r\nto 865 m, with gypsum/polymer mud from 865 m to 1917 m, and with\r\ngel/lignosulphonate mud from 1917 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eHydrocarbon accumulations were discovered\r\nin the target sandstone sequence (Stø Formation) from 2408 m to 2473 m. The\r\nsandstones showed good to excellent reservoir properties. Weak shows were\r\nrecorded in claystones in the interval from 1941 m to 2172 m and sporadically\r\nin the lower part of the Hekkingen Formation. Shows were recorded in sandstones\r\nthroughout the reservoir and down to 2620 m. Sporadic shows were recorded from\r\nthis depth down to TD. Organic geochemical analyses show an excellent source\r\nrock with high TOC (3 % to almost 9 % ) with type II/ III kerogen in the lower\r\npart of the Hekkingen Formation, from 2274 m to its base. Source potential for\r\ngas and condensate was seen in the Cretaceous Kolje Formation from 1995 m to\r\n2205 m and in the Early Jurassic Tubåen Formation from 2651 m to 2799 m. The\r\nwell is immature down to ca 2000 m (%Ro ca 0.5) and at peak oil window maturity\r\nat TD (%Ro ca 0.8). In contrast to the w",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}