【摘要】 以自给系统为特征的页岩气藏的勘探开发在北美获得了巨大成功,拓宽了天然气勘探的空间。页岩气形成的成熟度较宽,在页岩演化的各个阶段均发现了页岩气藏,处于高演化阶段的页岩成藏的规模更大。页岩中有机碳含量、有机质类型、矿物组成、孔隙含水量、可诱导的裂缝发育程度等均与页岩气的产能密切相关。Bar-nett页岩气的生产历史表明,页岩气地质储量评价方法的进步、针对页岩储层的有效压裂方式和水平井钻井技术的应用在页岩气的有效开发中起着关键作用。更多还原

【Abstract】 The exploration and development of shale gas reservoirs,featured by self-generated and self-accumulated system,achieved a great success in North America and this extends the field of natural gas exploration. Shale gas generated and accumulated in the source rocks within a wide range of thermal maturity,especially in high thermal maturity,and shale gas reservoirs have been found in each stage of evolutionary process of shale rocks. The production of shale gas is strongly affected by the total organic carbon content,organic type,mineral composition,and moisture content of pores and the distribution of inducible crack in the shale rocks. The production history of Barnett shale gas has proved that the evaluation method on shale gas reserves and fracturing and horizontal drilling are the key technologies for shale gas exploitation.更多还原