页岩气藏开发中的关键力学问题

简要概述了页岩气资源和开发现状，基于页岩储层的微纳尺度孔隙结构特征、力学特点以及开采方式，系统论述了页岩气开发中的多尺度、多物理场流动动力学的过程与机制，归纳凝练出页岩气微纳尺度流动、页岩人工压裂的裂缝扩展以及分段压裂水平井缝网宏观流动等方面是亟需解决的关键前沿力学问题，并针对各前沿关键力学问题综述了研究进展和发展趋势，为促进我国能源发展尤其是页岩气的科学、有效开发具有重要的意义．

Key mechanical problems in the developmentof shale gas reservoirs

Shale gas resources and development situation are outlined briefly. Based on pore structure characteristics at micro/nano scale, mechanics features and exploitation method of shale gas reservoir, mechanisms of multi-scale, multi-physics field flow dynamics in the exploitation of shale gas are reviewed systematically, and it is concluded that transport and adsorption-desorption mechanism at micro/nano scale, hydraulic fracture propagation mechanism and macro flow simulation of stimulated reservoir volume fracture network are key frontier mechanical problems to be solved in the development of shale gas reservoirs. Research approaches are proposed, which promotes the development of energy, especially has significant impact on the scientific and effective exploitation of shale gas reservoirs in china.