HomeA shale booster shot: ‘Re-fracs’ rise as cheap way to lift U.S. oil outputFILE PHOTO: Workers connect hoses between a pipeline and water

FILE PHOTO: Workers connect hoses between a pipeline and water

FILE PHOTO: Workers connect hoses between a pipeline and water tanks at a Hess fracking site near Williston, North Dakota November 12, 2014. REUTERS/Andrew Cullen
FILE PHOTO: Chevron fracking site near Midland, Texas
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