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Falklands' Isobel Deep well with good prospects of finding oil

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Staff writer ▼ | May 22, 2015
Isobel Deep
Oil and gas industry   Rockhopper Exploration and Falkland Oil & Gas:

Premier Oil's high-impact Falklands Isobel Deep well has hit oil shows in a suspected high pressure formation, partners Rockhopper Exploration and Falkland Oil & Gas said.

But, the area will now have to be cased, delaying the drilling program. The well, 14/20-1, is being drilled using the Eirik Raude semisubmersible drilling rig.

Rockhopper, which has 24% working interest in Isobel Deep, says a sand interval was penetrated with "suspected elevated formation pressure and oil shows." The interval is to be cement plugged and "a contingent 9 5/9in casing string run in the shale section above, before drilling through the prognosed Isobel reservoir interval, to planned total depth".

Rockhopper and FOGL say the contingent casing string will enable additional flexibility while drilling and evaluating the target formation.

However "the presence of oil shows is not necessarily indicative of net pay and conclusive results for the well will not be available until drilling operations have been completed and logging data collected." An announcement on the results of the well will be likely made in early June.

The Isobel/Elaine complex is estimated to contain mid case un-risked gross prospective resources, based on the operator's estimates, of 243 million barrels, partner FOGL indicated.

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