摘要
煤层气主要以吸附状态存在于煤层中,而其吸附量取决于煤层的储集物性,因此研究煤层储集性能的主控因素对于煤层气的勘探和开发具有重要意义。将煤层孔隙分为基质孔隙和割理孔隙,并分析了煤层孔隙的构成特征。从煤的物质组成和演化程度方面分析了基质孔隙发育的影响因素,认为煤层基质孔隙度的影响因素主要包括显微组分、灰分含量、变质程度等;利用逐步回归分析方法研究了镜质组含量、壳质组含量、惰质组含量、灰分含量、镜质体反射率等5个参数对煤层储集性能的影响。研究认为镜质体反射率(变质程度)和惰质组含量是影响煤储层储集性能的主控因素。
The coal-bed methane was mainly preserved in adsorbed state, and its volume was based on the physical properties of coal-bed reservoirs. It was of great importance to study the major control factors of coal-bed reservoir properties in the exploration and development of coal-bed methane. First the coal-bed pore was classified into the matrix pore and the cleat pore, and their structural properties were analyzed. And then the influencial factors of the matrix pore in material composition and coal-bed evolution were studied, the influencial factors of the matrix pore included maceral composition, ash content, metamorphic grade and so on. It is pointed out that vitrinite reflectance and inertinite content are the major control factors of coal-bed reservoir properties.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2010年第1期13-16,21,共5页
Journal of Oil and Gas Technology
基金
国家"973"规划项目(2002CB11702)
关键词
煤层气
储集性能
孔隙度
基质孔隙
割理孔隙
coal-bed methane
reservoir properties
porosity
matrix pores
cleat pores
