裂缝性封闭页岩气藏物质平衡方程及储量计算方法  

MATERIAL BALANCE EQUATION AND RESERVE CALCULATION METHOD OF FRACTURED AND CLOSED SHALE-GAS RESERVOIR

作　　者：刘铁成[1] 唐海[1] 刘鹏超[1] 蔺文洁[1] 苏国强 

机构地区：[1]西南石油大学 [2]中国石油西部钻探克拉玛依钻井公司

出　　处：《天然气勘探与开发》2011年第2期28-30,80,共3页Natural Gas Exploration and Development

摘　　要：从物质平衡原理出发,运用Langmuir吸附模型,同时考虑基质孔隙体积和裂缝孔隙体积随地层压力的变化,推导出了封闭性页岩气藏物质平衡方程。实例应用表明,该方程可有效计算页岩气藏储量。计算结果表明,页岩气藏基质系统储量很小,裂缝系统储量更小。Based on the material balance principle,by employing the Langmuir adsorption model and considering the changes of porosity volume in matrix and fracture with formation pressure,a material balance equation of closed shale-gas reservoir is derived.An example calculation shows that(1) the reserves of shale-gas reservoir can be calculated by the equation;(2) adsorption is the dominant storage mechanism of shale-gas reservoir;(3)matrix system's reserves are very little;and(4)fracture system's reserves are even less.

关 键 词：页岩气 物质平衡方程 LANGMUIR吸附 基质系统储量 裂缝系统储量 

分 类 号：P618.13[天文地球—矿床学]