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  "LayerName" : "Wellbore - History",
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    "wlbName" : "2/4-6",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 2/4-6 (named 2/4-5X by operator\r\nPhillips) was drilled on a structure ca six km west off the Ekofisk discovery.\r\nThe objective of the well was to test the Danian and Late Cretaceous limestone,\r\nwhich had proved oil productive in the other wells drilled within the block\r\n2/4. \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 2/4-6 was spudded with the\r\nsemi-submersible installation Neptune 7 on 28 August 1970 and drilled to TD at\r\n3411 m in the Late Cretaceous Tor Formation. The well was drilled with sweater\r\nand hi-vis mud down to 585 m, with seawater/drill aid mud from 585 m to 3107 m,\r\nand with seawater lignosulphonate mud from 3107 m to TD.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well penetrated a thick, nearly\r\ncomplete Tertiary succession consisting mostly of shales and claystones. A ca\r\n50 m thick sandy sequence with gas shows was encountered at 2956 m in the\r\nuppermost Paleocene. Danian Limestone (Ekofisk Formation) was penetrated at\r\n3110 m and Late Cretaceous limestone (Tor Formation) was encountered at 3270 m.\r\nA rich condensate and gas was tested from these formations\u003c/p\u003e\r\n\r\n\u003cp\u003eFive conventional cores were cut between\r\n3120.5 and 3223.4 m in the Ekofisk Formation. No wire line fluid samples were\r\ntaken.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was permanently abandoned on 10\r\nDecember 1970 as a gas and condensate discovery\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eFive drill stem tests through\r\nperforations of the 7" liner were carried out. The following results are\r\nmaximum flow after acidization: \u003c/p\u003e\r\n\r\n\u003cp\u003eDST 1 tested the zone 3370 - 3374 m in\r\nthe Tor Formation. It produced only water at a rate of 13 m3 /day. Bottom hole\r\ntemperature (BHT) in the test was reported to be 136.7 deg C.\u003c/p\u003e\r\n\r\n\u003cp\u003eDST 2 tested the intervals 3271 - 3286 m\r\nand 3295 - 3310 m in the Tor Formation. This test flowed 568 Sm3 oil /day on a\r\n1" choke. Oil gravity was 42.8 deg API and the GOR was 452 Sm3/Sm3. The\r\nBHT was reported to be 133.9 deg C.\u003c/p\u003e\r\n\r\n\u003cp\u003eDST 3 tested the interval 3243 - 3246 m\r\nin the lower Ekofisk Forma",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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