And then they send down a very high-speed injection of water into the well casing, and of course that flows into the rock and it puts little - tiny little hairline cracks in the rock, opens it up.

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And each frack job requires the injection of millions of gallons of chemical-laced water.

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He and his top engineers meet several times a week with U.S. officials, including Crear, on how to repair existing equipment, like the 100, 000-gallon-a-minute water treatment plant near Gharmat Ali, essential to restoring water injection into the Rumallah oilfields.

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This part of Texas is in the core of the Eagle Ford s hale, currently the most profitable oil and gas field in the U.S. The people around here understand that the fracking of this shale, the injection of billions of gallons of sand-and-chemical-laden water, takes place 2 miles beneath the ground.

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