A shale booster shot: ‘Re-fracs’ rise as cheap way to lift U.S. oil output

June 27 (Reuters) – U.S. shale oil producers are returning to existing wells and giving them a second, high-pressure blast to lift output for a fraction of the cost of finishing a new well. These “re-fracs” are taking hold as shale oil producers look to take advantage of $100 a barrel crude without making big investments in new wells and fields.