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    "wlbNpdidWellbore" : 2863,
    "wlbName" : "34/7-25 S",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 34/7-25 S is located near the\r\nsouthern extension of the Tordis field and North of the Gullfaks field in the\r\nTampen area in the Northern North Sea. The main objective of the well was to\r\ntest the presence of sand and hydrocarbon in a Late Jurassic prospect (the\r\nSouthern Triangle Upper Jurassic (STUJ) prospect). The STUJ prospect was\r\ndefined between Base Cretaceous Unconformity (BCU) and a Base Draupne\r\nreflector. Secondary objectives were to obtain pressure measurements in the Brent\r\nGroup, test presence of sand and hydrocarbons in the Cretaceous and in the\r\nPaleocene and prove migration route.\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 34/7-25 S was spudded with the semi-submersible\r\ninstallation Deepsea Bergen on 31 July 1996 and drilled to TD at 3235 m (2596 m\r\nTVD) in the Early Jurassic Drake Formation. No significant problems occurred\r\nduring operations. The well was drilled with spud mud down to 1271 m and with\r\noil based mud (Anco Vert) from 1271 m to TD. No shallow gas was encountered.\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 34/7-25 S penetrated several sands in\r\nthe interval from 1250 m to 1700 m within the Hordaland Group. Weak shows were\r\ndescribed in the interval 2275 to 2295 m in the Lista Formation. The shows had\r\nno odour and no stain in the description, due to oil based mud. The Cretaceous\r\nsection had only traces of thin sandstone beds in the Shetland Group. The well successfully\r\nencountered 27.5 m TVD oil bearing sandstones belonging to the Draupne\r\nFormation, with top at 2791 m (2193 m TVD). No OWC was proven. The uppermost 2\r\nm was cemented and had the same log response as the limestone of the Cromer\r\nKnoll Group. The next 21 m (2195 - 2216 TVD) showed excellent reservoir\r\nproperties with porosity around 30% and permeability between 6 and 7 Darcy. This\r\nupper massive sandstone was bioturbated and showed a coarsening up character. The\r\nlower part of the Draupne Formation comprised sandstones interbedded with more\r\nsilty parts. This part of the formation had a very high g",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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