特低渗油层非达西渗流压裂水平井非定常渗流产能预测新方法  

A new productivity model of non-Darcy flow for hydraulic fracturing horizontal wells in extra-low permeability reservoirs with unsteady porous flow

作　　者：朱维耀[1] 王明[1] 刘合[2] 张玉广[2] 王文军[2] 

机构地区：[1]北京科技大学,北京100083 [2]中油大庆油田有限责任公司,黑龙江大庆163100

出　　处：《特种油气藏》2010年第5期63-66,共4页Special Oil & Gas Reservoirs

基　　金：国家自然基金项目"特低渗透油层整体压裂两相渗流理论研究"(10772023);"低渗非达西渗流压裂水平井流-固耦合渗流理论研究"(10872027)和"功能纳微米聚合物提高低渗透油藏采收率新技术的基础研究"(50934003)

摘　　要：建立了反映特低渗透油层基质-裂缝非达西渗流条件下水平井耦合非定常流动的渗流数学模型,形成了非达西渗流条件下压裂水平井非定常渗流产能预测新方法。利用优化设计数值模拟研究裂缝长度、裂缝条数、裂缝分布、水平井长度、裂缝间距、裂缝导流能力等对压裂水平井开发效果的影响,揭示了压裂水平井基质-裂缝耦合两相流动开采变化规律。计算结果与试验动态数据变化规律相符,有效指导矿场压裂水平井优化设计。A mathematical model of coupling horizontal well with unsteady porous flow under the condition of non-Darcy flow in matrix-fissure has been built for extra-low permeability reservoirs,thus formed a new productivity model for fractured horizontal well. Optimized numerical simulation has studied the impacts of fracture length,fracture numbers,fracture distribution,length of horizontal well,fracture spacing and fracture conductivity on the development effect of fractured horizontal well,and demonstrated the rule of recovery changes of coupling two-phase flow in matrix-fissure of fractured horizontal well. The modeling result coincides with the dynamic test data,can guide optimization of fracturing horizontal well.

关 键 词：预测方法 非达西渗流 压裂水平井 特低渗透油层 非稳态渗流 

分 类 号：TE33[石油与天然气工程—油气田开发工程]