沁水盆地煤层气井网开采数值模拟  

NUMERICAL SIMULATION OF COALBED METHANE PATTERN EXPLOITATION IN QINSHUI BASIN

作　　者：张先敏[1] 同登科[1] 胡爱梅[2] 

机构地区：[1]中国石油大学(华东),山东东营257061 [2]中联煤层气有限责任公司,北京100011

出　　处：《工程力学》2008年第12期218-222,共5页Engineering Mechanics

基　　金：国家“863”计划项目(2006AA06Z236);中国石油天然气集团公司中创基金项目(07E1020);国家“973”计划项目(2002CB11708)

摘　　要：井网开采技术与其它增产强化措施结合可有效提高煤层气产量,而选择合理的井间距对井网开采具有重要意义。考虑煤基质收缩对储层物性参数的影响,并结合沁水盆地某区具体的地质条件、压裂裂缝监测资料以及煤储层条件,进行了煤层气井网开采模拟预测,建议下一步在该区进行滚动开发时,开发井网井间距应缩小为300m×300m,该井间距下井网开采16.5年时预测的煤层气采收率为56.46%。Pattern recovery technique, associated with other stimulation treatments, can effectively enhance the coal-bed methane production, where the selection of the reasonable well spacing is important to the pattern exploitation. According to the geologic condition, hydraulic fracture and reservoir conditions of some areas in Qinshui basin, the numerical simulation of coalbed methane pattern exploitation was performed considering the effect of matrix shrinkage on the porosity and permeability. It is suggested that the pattern well spacing should be 300m×300m in the future, and the predicted coalbed methane recovery is 56.46% after 16.5 years if this pattern well spacing is applied.

关 键 词：煤层气 基质收缩 井网间距 数值模拟 沁水盆地 

分 类 号：TE323[石油与天然气工程—油气田开发工程]