{
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  "LayerName" : "Wellbore - History",
  "id" : "849",
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    "wlbNpdidWellbore" : 2116,
    "wlbName" : "25/2-15 R2",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well is located in the southern part\r\nof block 25/2, and was designed to recognize the petroleum potential of the\r\nso-called Jurassic Prospect 1. The main objective of the well was to explore\r\nthe Middle Jurassic Vestland sandstones. An optional objective was Early Jurassic\r\nStatfjord sandstones, depending on the petroleum results at the Brent level. \u003c/p\u003e\r\n\r\n\u003cp\u003eWell 25/2-15 R is a re-entry of well\r\n25/2-15, which was drilled with the semi-submersible installation West Alpha.\r\nDue to a fire on the West Alpha installation the well was temporarily abandoned\r\non 13 January 1993, with the drill string in the hole. The 25/2-15 R re-entry\r\nretrieved the West Alpha BOP, fished out the lost drill string, performed\r\nlogging, and set 9 5/8" casing. After that, the hole was again suspended\r\nand the installation used, West Vanguard, left to Dusavika for BOP change out.\r\nThe purpose with the 25/2-15 R2 re-entry was to fulfil the original geological\r\nobjectives.\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 25/2-15 was re-entered for\r\nthe second time (25/2-15 R2) with the semi-submersible installation West\r\nVanguard on 6 March 1993 and drilled to final TD at 3942 m in the Early\r\nJurassic Dunlin Group. No significant drilling problems were encountered in the\r\nborehole. At 3602 m, during coring, a water kick was detected. At TD a\r\ndiscrepancy of 8 m between driller and log depth was recorded, log depth being\r\nthe deeper.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe Vestland reservoir proved to be water\r\nbearing, with residual hydrocarbon shows. Very good shows were observed in Shetland-limestones\r\nof Late Campanian - Early Maastrichtian age. However, no RFT pressure\r\nmeasurements/fluid samples were achieved. Both the bio- and lithostratigraphy\r\nof the formations in the lowermost part of the well, was initially indistinct.\r\nThe biostratigraphy study however, made it clear that TD of the well was in a\r\nformation belonging to the Dunlin Group, of Late Pliensbachian -Middle Toarcian\r\nage. Two cores were cut in ",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
  }
}