Federal records show a fair amount of oil shale patent activity in recent months. Such activity is hardly new, yet recent patents and applications reflect interest in a wide range of possible ways of ...

Oil produced from shale reservoirs drove record crude output in the U.S. over the past decade, but inefficiencies in extraction often leave as much as 90% of the oil behind, according to the federal ...

A new method, developed in the United States, could help improve oil output from the tightly packed formations of shale rock. Developed by researchers at Pennsylvania State University, the new oil ...

BOSTON – A major defense contractor is selling technology to a large oilfield services company that hopes microwaves will someday become a key tool in unlocking the vast but hard-to-extract oil ...

Watford City, North Dakota, Oil production in the Bakken shale formation near the Missouri River. (Photo by: Jim West/UCG/Universal Images Group via Getty Images) eaking of shale oil production and ...

The development of "oil shale" (not to be confused with "shale oil") and "tar sands" has been shown to be environmentally destructive, and water and energy intensive. Extracting oil from U.S. public ...

Cyclic carbon dioxide injection, also known as "CO2 huff-n-puff," is a multi-phase process in which CO2 is pumped into a reservoir to enhance oil production from naturally occurring rock formations.