EIA: Low prices shrink proved U.S.reserves of oil and natural gas

摘要

Marking a major turnaround since thernbeginning of the shale boom, proved reservesrnof U.S. crude oil and natural gasrnfell steeply in 2015 and are expected tornkeep falling through 2016 due to lowrnprices that have undercut the economicrnviability of resources that are more expensivernto produce, the Energy InformationrnAdministration said Wednesday.