Rock properties in low-porosity/low-permeability sandstones

This is the authors' abstract. We don't add key points for this paper.

Tight gas sand reservoirs are formally defined by the Federal Energy Regulatory Commission (FERC) as reservoirs with less than 0.1 md permeability. Although this is a permeability-based definition, these reservoirs frequently also have very low porosities (< 10%). Reservoirs that currently classify as “tight gas sands” account for approximately 19% of the total U.S. gas production and may contain upwards of 35% of the U.S. recoverable gas resources. In the U.S. Rockies alone, tight gas-sand reservoirs may contain upwards of 41.7 trillion cubic feet of gas; considerably more gas may exist in tight gas sand reservoirs at depths > 15 000 ft (Oil and Gas Investor, 2005).