EnCore Oil plc announced that the EnCore operated 'Cobra' gas appraisal well 48/2c-5 on the UK Southern North Sea block 48/2c has completed testing. The well tested at a maximum unstimulated dry gas rate of 1.1 million standard cubic feet per day with a flowing tubing head pressure of 230 pounds per square inch through a 32/64 inch choke. The gas was produced from the Rotliegendes Sandstone through four and a half inch sand screens across the entire interval from 11,189 feet and 11,683 feet measured depth below rotary table.
Well 48/2c-5 has established a total gas column in the Cobra structure of at least 350 feet true vertical thickness. The results of the well support the likelihood that there is a significant volume of gas in place within the structure. However, the unstimulated rate is not commercial, so the well is being suspended pending further evaluation of the most effective well stimulation technique.
"We are naturally disappointed that the well would not flow unstimulated at 'commercial' rates," said Alan Booth, EnCore's Chief Executive Officer. "The results of the well have however given us greater confidence that Cobra contains a significant volume of gas in place."
The EnCore operated well is being drilled by the ENSCO 80 jack-up rig and is being managed by Applied Drilling Technology International (ADTI) which has over 20 years' experience in providing 'turnkey' drilling services. EnCore has a 20%. interest, together with co-venturers, Bharat Petroleum Corporation Limited (25%.), Tata Petrodyne Limited (25%.), Norwest Energy (22.5%.) and Challenger Minerals (North Sea) Limited (7.5%.).
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