RETURNING FRACKING FLUIDS BACK DOWN THE HOLE

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RETURNING FRACKING FLUIDS BACK DOWN THE HOLE

Postby HVPA_research » Thu Nov 04, 2010 4:34 am

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HVPA LINK: http://forum.huntervalleyprotectionalliance.com/viewtopic.php?f=5&t=257 (this page)
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From Marcellus Effect blog by Sue Heavenrich:
What to do With Flowback? Just Pump it Back Downhole.

American gas companies are experimenting with this in the Marcellus Shale. Returning just fracking flow-back, not what in CSG is called saline produce water. That means that ALL fracking chemicals will stay in the ground. Australia cannot be too far back. Just consider what this would mean for the Great Artesian Basin!
A number of companies have engineered recycling technologies, including Aqua Pure and GE. But, says Tony Gaudlip, water operations manager for Range Resources, recycling flowback may be as simple as pumping it back down the hole. In an October 21 webinar Gaudlip said that Range Resources has been recycling 100 percent of their flowback for the past year. Reusing the water has resulted in a savings of $200,000 per well, about 5 percent of the total drilling cost.

We’re not talking a lot of flowback – only 10 percent of what’s injected comes back out. Still, the company’s engineers needed to consider a few things before pumping wastefluid back down the hole: pumping pressure – horizontal wells require about 80 to 100 barrels of water per minute to fracture the rock; and the chemicals they used. Fracturing Marcellus requires different chemicals than shale wells in other parts of the country.
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