{
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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 258,
    "wlbName" : "2/5-3",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 2/5-3 was drilled ca 8 km southeast\r\nof the Tor Field. The primary target was top Danian chalk. Secondary targets\r\nwere top Paleocene and base chalk at 3551 m (11650 ft). Planned total depth was\r\n3597 m (11800 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\u003eWell was spudded with the jack-up\r\ninstallation Zapata Explorer on 2 April 1972 and drilled to TD at 3731 m in the\r\nLate Permian Zechstein Group. \u003c/p\u003e\r\n\r\n\u003cp\u003eTop Paleocene was encountered at 2929 m,\r\ntop Ekofisk Formation at 3037 m, top Tor Formation at 3121 m, and top Hod\r\nFormation at 3481 m. First show was reported in a limestone stringer at 2259 m.\r\nOccasional oils shows, in limestone stringers, were reported in the interval\r\n2604 to 2877 m. The top 3 m of the Paleocene (Balder Formation) was silty and\r\nhad good oil shows. Oil was found by drill stem testing in the Ekofisk and Tor\r\nFormations. Shows continued down to 3261 m in the Tor Formation.\u003c/p\u003e\r\n\r\n\u003cp\u003eFifteen conventional cores were cut in\r\nthe Ekofisk and Tor Formations, recovering a total length of 123.3 m core.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was suspended on 15 June 1972 as\r\nan oil discovery.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThree zones were drill stem tested. The\r\nfollowing results are after acidization: \u003c/p\u003e\r\n\r\n\u003cp\u003eDST 1 tested the interval 3386 - 3395 m\r\nin the lower part of the Tor Formation and flowed 21 m3 water /day.\u003c/p\u003e\r\n\r\n\u003cp\u003eDST 2 tested the interval 3120 - 3191 m\r\nin the upper part of the Tor Formation. Average flow parameters at maximum\r\nchoke, 40/64", was 682 Sm3 oil and 340400 Sm3 gas /day. The oil gravity\r\nwas 36 deg API and the GOR was 463 Sm3/Sm3. The GOR on smaller choke sizes was\r\nsignificantly lower, down to 233 Sm3/Sm3 on a 16/64 "choke.\u003c/p\u003e\r\n\r\n\u003cp\u003eDST 3 tested the interval 3053 - 3065 m\r\nin the Ekofisk Formation and flowed on average 682 Sm3 oil and 141330 Sm3 gas\r\n/day on a 32/64" choke. The water production during this flow decreased\r\nfrom 57 to 17.5 m3 /day and the GOR decreased from 213 to 179 Sm3/Sm3. The oil\r\ngravity was 38.2 deg A",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}