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Refracking offers hope to shale industry

The process could boost flow of crude and increase estimate of reserves held in the well

Because the first step in the fracking process is already done - the drilling of the wellbore - the outlay for refracking is a fraction of the US$8 million or so it costs to tap a new well.


THE technique itself is nothing new. Oil crews across the world have been schooled on its principles for generations: Identify ageing, low-output wells and hit them with a blast of sand and water to bolster the flow of crude. The idea originated somewhere in the plains of the...

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