我国煤层气储层特征研究  

Coal-bed Methane Reservoir Characteristics Analysis in China

作　　者：艾军[1,2] 肖传桃[1,2] 郭双 陈肯[1,2] 

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [2]长江大学地球科学学院,湖北武汉430100 [3]中国石油东方地球物理公司,河北涿州072751

出　　处：《非常规油气》2014年第1期33-40,共8页Unconventional Oil & Gas

基　　金：国家自然科学基金(40972019)资助;长江大学科研发展基金(0709001)

摘　　要：在对国内煤储层渗透性、压力、吸附性及含气性等研究现状系统调研的基础上,提出了每种研究方法存在的局限性。以国内主要煤层气矿区及室内实验研究为基础,提出:建立围压与煤储层基质收缩程度与裂缝系统开合程度数学模型是下步煤储层渗透性研究的重点;构造应力是影响煤储层压力变化的主要因素,在利用经验公式研究煤储层吸附特性时,应充分考虑影响煤样膨胀量的压力条件;煤层气富集区具有煤层厚度大、分布面积广、煤储层裂缝发育、顶底板封盖性能好及水动力条件优越等特点。深化煤储层特征研究对进一步提高煤层气动用程度具有较大意义。On the basis of domestic coal permeability, pressure, and gas adsorption studies and other research on the status quo system, we proposed limitations of each research methods exist. Domestic coal-bed methane mining and experimental study is based indoor proposed： the establishment of confining pressure and coal reservoir matrix shrinkage cracks in the system and the degree of opening and closing the lower part of the mathematical model is the focus of the study coal permeability; tectonic stress is the main factor coal storage layer pressure changes; coal reservoirs in the study of the adsorption characteristics using empirical formula, should fully consider the impact of the amount of coal swelling pressure conditions; CBM-rich region has a thickness of coal seam, wide distribution area, coal reservoir fractures, good performance and excellent roof and floor cover hydrodynamic conditions and other characteristics. Deepening of coal bed methane reservoir characteristics has a larger significance to further increase the extent of using coal bed methane reservoir.

关 键 词：储层渗透率 储层压力 吸附特性 含气量分析 

分 类 号：P618.13[天文地球—矿床学]