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Commodities at a Glance - Special issue on Shale Gas
… streams. Finally, wastewater may also be reinjected into deep underground formations. This solution has been largely … water (e.g. saline water, brackish water extracted from deep aquifers and wastewater produced from previous … depletion of its natural gas reserves, mainly in the North Sea in 1980– 2014, by -72 per cent, led natural gas …