The Securities and Exchange Commission (SEC) recently issued subpoenas to a number of large energy companies seeking documents relating to the performance and viability of shale oil and gas wells, reports the New York Times.  The subpoenas, which were issued to Chesapeake Energy, Petrohawk Energy Corporation and others, appear to be linked to previous New York Times articles questioning the long-term viability and profitability of shale production.  As the article explains, the "subpoenas reflect the regulators’ interest in determining whether companies are overstating how their gas wells perform and how much gas these companies can profitably extract over the long term."