Elk Petroleum (ASX: ELK) and operator Denbury Resources (NYSE: DNR) have reached a key milestone at their Grieve Enhanced Oil Recovery Project in Wyoming with the start of carbon dioxide injection.
BHP Billiton Petroleum eliminated an intermediate casing string in a Permian basin pilot by switching to an oil-based mud (OBM) from a water-based mud. BHP Billiton Petroleum eliminated an ...
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