Rex presses Illinois basin EOR pilots, Delta expansion

09/10/2012
Rex Energy Corp., State College, Pa., said its enhanced oil recovery operations in giant Lawrence field in southern Illinois have the potential to double the field's output by the end of 2015. Lawrence field had an estimated 1 billion bbl of original oil in place, of which 400 million bbl has been recovered since 1906. Waterflooding started in the 1950s, and Marathon Oil Corp. recovered 15-20% of OOIP at two surfactant-polymer floods in the 1970s-80s. The field's primary producing zones are the Mississippian Cypress and Pennsylvanian Bridgeport sandstones. Rex commenced alkali-surfactant polymer flooding on the 58-acre Perkins-Smith pilot in June 2012 and expects initial response by the s...
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