页岩气藏储层地质特征简述

Shale Gas Reservoirs in the Geological Characteristics Descroption

页岩气藏相比常规气藏有其独特之处,页岩气藏是以吸附或者游离态为主要赋存方式的天然气聚集,其中一部分以游离态或溶解态赋存于孔隙和裂缝中,一部分吸附在有机质和黏土矿物的表面,具有渗透率极低,孔隙度极小等特征。我国的页岩气资源储量巨大,国内外成功开发的经验表明,压裂改造是实现页岩气开发的重要技术步骤,在施工设计过程中,页岩气藏储层压裂地质特征是一个重要的考虑因素。基于此,在充分调研国内外有关页岩气文献的基础上,对页岩气藏压裂地质特征进行研究。

Shale gas compared to conventional gas reservoir has its own unique characteristics, shale gas is adsorbed or free state is the major natural gas gathering mode of occurrence, some of which in the free state or dissolved state occurs in the pores and cracks, part of the organic matter adsorbed on the surface of clay minerals and has a very low permeability, porosity and other small features. Our huge shale gas reserves, the successful development of domestic and international experience shows that fracturing is shale gas development to achieve an important technical step in the construction design process, fracturing shale gas reservoirs is an important geological feature considerations.Based on this, the full investigation related to shale gas on the basis of domestic and foreign literature on shale gas reservoir fracturing geological characteristics were studied.