Abstract
Abstract The accumulation of condensate in fractures is one of the challenges of producing gas from gas-condensate reservoirs. When the bottomhole pressure drops below the dew point, condensate forms in and around fractures and causes a significant drop in the gas relative permeability, which leads to a decline in the gas production rate. This reduction of gas productivity is in addition to the reduction due to water blocking by the fracking water. Solvents can be used to remove liquid blocks and increase gas and condensate production rates. In this paper, dimethyl ether (DME) is introduced as a novel solvent for this purpose. In addition to good partitioning into condensate/gas/aqueous phases, DME has a high vapor pressure, which improves the flow back after the treatment. We compare its behavior with both methanol and ethanol solvents.
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