Shale gas is natural gas produced from shale a type of sedimentary rock shale gas has become an increasingly important source of natural gas in the united states . World shale resource assessments last updated september 24 2015 this series of reports provides an initial assessment of world shale oil and shale gas resources. What triggered the us shale gas revolution the use of horizontal drilling in conjunction with hydraulic fracturing has greatly expanded the ability of producers to . The russia ukraine gas disputes refer to a number of disputes between ukrainian oil and gas company naftohaz ukrayiny and russian gas supplier gazprom over natural . We are safely and responsibly tapping into huge resources of natural gas known as tight and shale gas held deep inside rock
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