A study released by the American Clean Skies Foundation (ACSF) and Navigant Consulting, Inc. indicates the United States has 2,247 trillion cubic feet (Tcf) of natural gas reserves, which is enough to last more than 100 years.
The report says "existing forecasts from the U.S. Energy Information Administration (EIA) have historically underestimated and understated the contribution and potential of unconventional natural gas from three sources: tight sands, coalbed methane and gas from shale formations."
Shale gas is making headlines in Oklahoma's Woodford play and Pennsylvania's Marcellus Shale, and other locales as a major resource. Arizona is not on the industry's list of primary exploration targets but AZGS oil and gas administrator Steve Rauzi has compiled a list of 11 Arizona shale units that warrant further investigation. [above, Mancos Shale, northern Arizona. Credit t-rat.com]