EP Energy reports FY13 proved reserves of 547.5M Boe EP Energy and its wholly-owned subsidiary EP Energy jointly reported proved oil and natural gas reserves of 547.5M Boe as of December 31, 2013. Total reserve replacement costs were $12.62 per Boe. EP Energy reported that 54% of its total reserves in 2013 were oil, and 67% were liquids. Reserve value on a PV-10 basis increased to $8.9B, up from $6.4B at the year ended 2012. Production of 86.1 MBoe/d, including 37 MBbls/d of oi, a 55% increase in produced oil volumes from 2012.