沁水盆地煤储层参数影响产气量数值模拟  

Numerical simulation of reservoir parameters influence on gas production in Qinshui Basin

作　　者：刘升贵[1] 彭智高[1] 王振彪[1,2] 陈含[1] 付裕[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]山西煤层气有限责任公司,山西晋城048000

出　　处：《辽宁工程技术大学学报（自然科学版）》2014年第10期1302-1306,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家科技重大专项基金资助项目(2011ZX05038-001);高等学校学科创新引智计划基金资助项目(B14006)

摘　　要：为揭示沁水盆地煤层气储层参数差异性影响产气量规律,采用理论分析和数值模拟方法,研究沁水盆地煤储层参数的差异性,分析产气量对孔隙度、含气量、兰氏体积、渗透率、表皮系数的敏感度.研究结果表明:煤层气储层参数差异性较强,产气量与储层含气量、渗透率呈正相关性,而与储层孔隙度、兰氏体积、井筒表皮系数呈负相关性;产气量对含气量、兰氏体积、渗透率、表皮系数非常敏感;储层保护的关键是减小钻井、固井、完井、压裂工程对渗透率的伤害,降低表皮系数;煤层气开发技术应有针对性地增加渗透率、增加压降区域面积、减少储层伤害.In order to reveal the sensitivity of CBM wells gas production to reservoir parameter in Qinshui Basin, through the theoretical research and field measurement method, coal reservoir parameter heterogeneity characteristics in Qinshui Basin are researched, and sensitivities of gas production to porosity, gas content, Langmuir volume, permeability and skin factor are analyzed. The results indicate that CBM reservoir parameter heterogeneity characteristics are better. Gas production has positive correlation to reservoir gas content and permeability, and has negative correlation to reservoir porosity, Langmuir volume and well hole skin factor. Gas production is sensitive to gas content, Langmuir volume, permeability and skin factor. The key to reservoir protection is to reduce the damage to permeability which is caused by well drilling, well cementation, well completion and fracturing. CBM exploitation technology need to improve the permeability and the pressure drop area, and reduce the reservoir damage.

关 键 词：含气量 渗透率 产气量 兰氏体积 表皮系数 含气饱和度 敏感度 

分 类 号：P618.11[天文地球—矿床学]