工程科学学报2016，Vol.38Issue(3)：306-313,8.DOI:10.13374/j.issn2095-9389.2016.03.002
含微裂缝页岩储层渗流模型及压裂井产能
Seepage model and productivity prediction of fractured wells in shale gas reservoirs with discontinuous micro-fractures
摘要
Abstract
A dual-porosity medium with micro-fractured spherical matrix blocks was achieved on the basis of the structure charac-teristics of nano-micro pores and micro-fractures in shale gas reservoirs. The Laplace space solution of the dimensionless bottom hole pressure of fractured well production was obtained in consideration of the seepage, diffusion and desorption mechanism of shale gas and applying the Laplace transform and the Stehfest numerical inversion. Type curves of dimensionless production were plotted and the in-fluencing factors of the type curves were identified. The results show that the matrix surface improves gas transfer from the matrix medi-um to the fracture network due to matrix micro fractures. Increasing the permeability and length of micro fractures accelerate the pro-ductivity significantly.关键词
页岩气/裂缝/渗流/数学模型/产能Key words
shale gas/fractures/seepage/mathematical models/productivity分类
能源科技引用本文复制引用
亓倩,朱维耀,邓佳,马千..含微裂缝页岩储层渗流模型及压裂井产能[J].工程科学学报,2016,38(3):306-313,8.基金项目
国家重点基础研究发展计划资助项目(2013CB228002) （2013CB228002）
