StatoilHydro ASA, operator of Production License PL104, has completed drilling of wildcat well 30/9-21 A in the Oseberg South area.
Well results indicate a non-commercial discovery in Upper Jurassic rocks. The purpose of the well was to prove petroleum in Upper Jurassic rocks. The well was not production-tested, but log data suggests that it encountered small amounts of oil in thin sandstone strata of the Upper Jurassic age. However, the ratio of reservoir rocks in the well was too low for commercializing the discovery.
The well represents the second branch in exploration well 30/9-21. The first branch, 30/9-21 S, proved a commercial discovery in the Brent Group in the Delta S2 structure 2.5 km southwest of the Richards location, while 30/9-21 A tested the potential on the downside of a rotated fault block.
The well was drilled at a depth of 90 meters and was concluded in rocks of the Middle Jurassic age. The well has now been plugged and abandoned, and has provided valuable information on the Upper Jurassic strata row in the Oseberg area.
The well was drilled using the mobile rig Transocean Winner, which will now be heading for Production License 369 in the North Sea and drill wildcat well 32/2-1.
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