ABSTRACT
Research sponsored by the Gas Research Institute indicates unbroken fracture fluids can lower gas reserves by 30%, reduce initial gas rates by 80%, and delay fracture fluid clean-up by weeks or months. The unbroken fracture fluids slow fracture fluid cleanup and flatten the production profile. In extreme cases, gas production slowly increases for weeks or months despite constant flowing pressures. The fracture fluids must break to a viscosity of 50 cp or less to ensure that gas reserves are maximized.
Copyright 1993, Society of Petroleum Engineers
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