Abstract
Based on the measured data of gas production and backflow flux in Sichuan Province of China, pressure-sensitive effect is studied based on history matching in this article. When the shale gas development is on-going, the reservoir pressure declines and micro-fracture network may be partially closed in the stimulated reservoir volume (SRV). The closure of micro-fracture network not only leads to the decrease of absolute permeability, but also to the variation of relative permeability curve. The pressure-sensitive effect coefficient of relative permeability is introduced in this article to characterize this effect.
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