"Predictive Model for Permeability Reduction by Small Wetting Phase Saturations"

Siyavash Motealleh, Steven L. Bryant & Siyavash Motealleh
Field experience in unconventional gas reservoirs indicates that well deliverability can vary dramatically, even between closely spaced wells. A possible explanation lies in laboratory experiments which show that a small increase in water saturation can decrease the gas phase permeability significantly. Conversely, drying out the water saturation during gas cycling in reservoirs or during injection of CO2 into deep saline aquifers affects petrophysical properties such as absolute permeability and capillary pressure. The precipitation of salts...
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