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    "wlbNpdidWellbore" : 196,
    "wlbName" : "2/4-7",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 2/4-7 was drilled on a structure ca\r\nsix km west off the Ekofisk discovery. The objective of the well was to test\r\nthe Danian limestone with estimated 200 m gross / 120 m net pay, and the Late\r\nCretaceous limestone with estimated 60 m gross / 15 m net pay. These Formations\r\nhad proved oil productive in the other wells on the Tor structure. Secondary\r\nobjective was possible Paleocene sand in the interval 3020 - 3140 m. Planned\r\ndepth was 3414 m (11200 ft).\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eAppraisal well 2/4-7 was spudded with the\r\njack-up installation M ærsk Explorer on and drilled to TD at 3493 m in the Late\r\nCretaceous Tor Formation. The drill pipe stuck at 3405 m, but was freed after\r\nseven hours working. The well was drilled with seawater and gel down to 555 m\r\nand with seawater/drill aid and 2 - 5% diesel from 555 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eTop Paleocene (Balder Formation) was\r\nencountered at 3048 m. The Paleocene contained only minor, thin sand beds. The\r\nchalk group came in with the Ekofisk Formation at 3175 m and the Tor Formation\r\nat 3304 m. Fair shows were recorded on cores in the top 2 m of the Ekofisk\r\nFormation, otherwise Ekofisk only had scattered shows. Fair to good shows were\r\nagain recorded in the Tor Formation, from the top and down to 3332 m. Below this\r\ndepth shows were reported as spotty, on fracture plains. Oil was confirmed by\r\ntesting in the top 24 m of the Tor Formation. The test in top Ekofisk gave only\r\nwater with a trace of gas. Thirteen cores were cut in the well, recovering a\r\ntotal of 164 m core. Core 1 to 9 were cut throughout the Ekofisk Formation, the\r\nrest were cut in the upper part of the Tor Formation. Core depths were reported\r\nto be 4 - 5 m shallower than log depth for all cores except core 5, which need\r\nto be shifted only + 1 m. No wire line fluid samples were taken.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 18\r\nOctober as an oil appraisal.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eSeven drill stem tests were carried out\r\nthrough per",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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