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Extracción hidráulica de gas de esquisto -

Graphic News

May 7, 2013 -- Hydraulic fracturing is seen as a game-changer in world energy markets. “Fracking” is a two-phase process to extract natural gas from prehistoric shalebeds thousands of metres below ground. The first phase includes drilling the wells, while the second uses high-pressure blasts of water and sand-laden gel to fracture shale rock and release gas.

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