The U.S. Department of Energy, Petroleum Consulting Services, Universal Well Services, and Canadian Fracmaster have recently performed eight CO2/sand stimulations on four Devonian Shale gas wells in the Appalachian Basin. Four two-stage CO2/sand stimulations were executed with two operators in the Pike and Martin County, Kentucky area. All stimulations involved 120 tons of carbon dioxide (CO2) and up to 47,500 pounds of sand. In addition, there are eleven existing …
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