王伟锋,刘鹏,陈晨,王会丽,姜帅,张志超
WANG Wei-feng,LIU Peng,CHEN Chen,WANG Hui-li,JIANG Shuai,ZHANG Zhi-chao
摘要:
在调研了国内外页岩气研究成果的基础上,系统地研究了页岩气藏基本特征,分析了页岩气藏的成藏机理及成藏控制因素,并针对页岩气藏特殊的成藏特征,探讨了相应的识别方法和资源评价方法。研究表明,页岩气藏通常具有自生自储、储层粒度细、低孔低渗、裂缝发育、储层面积大、连续分布、形成温度及埋深范围广,赋存方式主要为吸附态、压力异常、产能低、采收率低和生产周期长等特征;页岩气成藏具有过渡特点,兼具了根缘气及常规天然气的成藏机理;有机质类型及含量、成熟度、裂缝、孔隙度和渗透率、矿物组成、厚度、湿度、埋深、温度与压力对页岩气藏的形成具有一定的控制作用;利用岩心分析法、地球物理法及ECS测井、成像测井等测井新技术可定性或定量识别页岩气;按照页岩气资源评价主要方法的原理归类,目前页岩气资源评价主要方法有类比法、成因法、统计法和综合法4类,每种方法有各自的适用性和局限性。
中图分类号:
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