Sentences with phrase «quality oil shale»

Not exact matches

Concerns over hydraulic fracturing, an oil and gas extraction method that injects millions of gallons of freshwater and chemicals into shale, have largely focused on potential impacts on water quality.

But for potential foreign purchasers of that oil, the key question is how much extra it will cost to extract the dirty compounds in Alberta bitumen so that its quality matches export oil being produced at high - grade, low - cost US shale formations like the Bakken, Permian, and Eagle Ford.