The shale industry’s newest technique: refracking
Sunday, August 24, 2014
Some oil and gas companies are using wells that were sunk several years ago by “refracking” them, according to Reuters.
Diverting agents, which are small plastic balls, are pumped into already-fracked wells with water. The diverting agents are supposed to block cracks with small amounts of pressure so that cracks with high amounts of pressure are left open for refracking.
Companies like Encana Corp. spent about $12 million on a newly-drilled well, whereas refracking an existing well cost around $1 million in Louisiana’s Haynesville shale. Drillers in North Dakota’s Bakken shale have seen large returns.
Just as with fracking, though, refracking places stress on water supplies, especially in areas experiencing drought.
Via: Reuters > Refracking brings ‘vintage’ oil and gas wells to life
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