煤基块弹性能及其与地质控制因素之间的关系  

Coal Matrix Flexibility Energy and the Relation With Geological Controlling Factors

作　　者：吴财芳[1] 秦勇[2] 傅雪海[2] 林伯泉[1] 

机构地区：[1]中国矿业大学能源与安全工程学院,江苏徐州221008 [2]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《中国矿业大学学报》2005年第5期636-639,共4页Journal of China University of Mining & Technology

基　　金：国家973项目(2002CB211704);江苏省博士后基金项目(50134040-03)

摘　　要：煤储层弹性能是联系成藏动力学条件与煤层气藏之间的桥梁和纽带,煤基块弹性能是储层能量的主要组成部分,是煤层气成藏的关键.本文通过煤基块弹性能物理模拟实验,对影响煤基块弹性能的参数进行了研究,分析了其与地质控制因素之间的关系.研究表明:煤基块弹性能受控于煤体自身的岩石力学性质,与地质历史时期的煤储层埋藏深度、煤级演化程度密切相关.煤基块弹性能随着煤储层埋深的增加而降低,随着煤级的升高而增大.It is the bridge and link for the flexibility energy of coal reservoir to connect pool-forming dynamic condition with coalbed gas accumulation. Coal matrix flexibility energy is the important part of coal reservoir energy and the key of coalbed gas accumulation. On the basis of physical simulation experiments of coal matrix flexibility energy, the parameters influencing coal matrix flexibility energy were studied, the relation between coal matrix flexibility energy and geological controlling factors was analyzed. The results show that coal matrix flexibility energy was controlled by rock mechanical properties of coal, and was correlative nearly with the buried deepness of coal reservoir and the evolvement degree of coal rank in different geological phases. Coal matrix flexibility energy decreased with the increasing of buried deepness of coal reservoir, and increased with the rising of coal rank,

关 键 词：煤基块弹性能 煤级 埋藏深度 煤层气成藏 

分 类 号：P618.11[天文地球—矿床学] TD712[天文地球—地质学]