A new government study released today estimates that the amount of recoverable oil in the Bakken Formation in North Dakota, South Dakota and Montana (see map above) – at 7.4 billion barrels – is more ...

Chantell Dunbar-Jones remembers when her hometown of Lewisville, Arkansas, seemed to have oil wells on every corner. The small town, located in the southwestern part of the state, sits atop the ...

As defined by the U.S. Geological Survey (USGS), heavy oil is a type of crude oil characterized by an asphaltic, dense, viscous nature (similar to molasses), and its asphaltene (very large molecules ...

Tight gas reservoirs are characterized by narrow pores and throats, abundant clay minerals, and developed fractures. These lead to severe formation damage during drilling, negatively affecting ...