Bakken oil fields mark billionth barrel
State data show that 1 billion barrels of oil have been produced from the rich Bakken shale formation in western North Dakota and eastern Montana.
Drillers first targeted the Bakken in Montana in 2000 and moved into North Dakota about five years later using advanced horizontal drilling and fracking techniques.
Data show North Dakota has tallied 852 million barrels of Bakken crude and Montana has produced about 151 million.
The Bakken encompasses about 25,000 square miles in North Dakota, Montana, Saskatchewan and Manitoba. About two-thirds of the acreage is in western North Dakota.
Oklahoma-based Continental Resources is the biggest leaseholder in the Bakken. The company said two-thirds of the production from the Bakken has been extracted in the past three years.
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