Pressure Transient Analysis for Partial Open Fractured Wells in Shale Gas Reservoirs

Abstract

Shale gas has been paid much attention for its great potential as the unconventional energy all over the world. The great success in North America shale gas exploration and development has stimulated the exploration and development of shale gas in China. Shale gas is much different from conventional gas reservoir with its highly difficult in exploration, high technical requirements and expensive costs, so the mechanism study, characterization study and development technology of shale gas are much more important than ever before.Therefore, according to the characteristic of desorption, diffusion and seepage, a seepage model of partial open fractured wells in shale gas reservoirs has been established. The plots of pressure characteristic curves are drawn.The flowing phases are divided in the pressure characteristic curves.The factors which affect the pressure dynamic characteristics are discussed. The results can help people to understand the flow mechanism of fractured wells in shale gas reservoirs and provide the theoretical support for the high-efficiency development of shale gas reservoirs using fractured wells.