The current geochemical view is that hydrocarbons generated from organic matter disseminated in fine-grained sedimentary rocks and coals are controlled primarily by temperature and duration of heating ...

The Bakken shale formation under western North Dakota and eastern Montana is the "largest continuous oil accumulation" the U.S. Geological Survey has ever assessed, the federal agency said in a report ...

With their newfangled electrical and seismographic prospecting instruments, petroleum geologists have found indications that oil formations may lie as deep as 25,000 ft. below the earth’s surface.

The EIA has added the Avalon, Barnett, Dean and Woodford to its estimates by formation of Permian tight oil and shale natural ...

DICKINSON, N.D. - The North Dakota Department of Mineral Resources released details this week about an oil formation in southwest North Dakota believed to be similar to the Bakken, and leasing has ...

Geologists have squabbled for a century about the origin of petroleum. Last week M.I.T.’s Technology Review discussed a novel theory. Most experts agree that petroleum was formed from organic remains ...

WASHINGTON, April 30 (Reuters) - An oil-rich region of the north-central United States holds more than twice the recoverable crude supplies estimated just five years ago, according to a government ...