页岩气开采机理研究进展

美国页岩气开采历程表明准确认识页岩气开采机理是页岩气得以成功开采的关键,文章深入分析了页岩气开采机理中储层概念化物理模型、页岩气开采理论模型、页岩气开采模拟技术的国内外研究进展,得出以下结论:①我国页岩气开采机理的正确认识必须首先建立适合中国页岩气储层岩石微观结构的物理模型;②中国含气页岩储层埋深较大,其所处的应力环境较为复杂,页岩气储层岩石的孔隙度和渗透率随地应力变化均发生变化,中国页岩气开采机理的研究必须考虑地应力的影响;③需结合中国含气页岩储层的实际情况,基于适合中国页岩气开采机理的理论模型,发展相应页岩气开采的数值模拟技术。

Development in researches on shale gas recovery mechanism

Accurate understanding of recovery mechanism is a key to successful exploitation of shale gas. Development in researches on conceptual reservoir models, theoretical models and simulation techniques of shale gas exploration was analyzed. The conclusions are as follows: 1.reservoir model conforming to microstructure of gas shale in China must be established, 2.Deep burial shale gas reservoirs in China are featured by more complicated ground stress environment. Porosity and permeability of gas shale change with ground stress. Ground stress must be considered to research shale gas recovery mechanism 3. Numerical simulation technique must be developed base on shale gas reservoir characteristics in China.