PDC's total proved reserves at the end of 2013 came to 266 million barrels of oil equivalent, up from 193 MMboe a year earlier.

The total takes into account PDC's previously announced sale about 16 MMboe of proved developed reserves, made up of non-core dry gas assets in Colorado and the shallow Upper Devonian play in the Appalachian basin.

Reserves were valued at around $2.7