基于正交灰关联法的气藏水平井体积压裂影响因素研究  

Research on the Influencing Factors of Volume Fracturing of Horizontal Well in Gas Reservoir Based on Orthogonal Design and Grey Relation Analysis Theory

作　　者：文华[1] 刘义坤[1] 孙娜[2] 

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]吉林油田松原采气厂,吉林松原138000

出　　处：《数学的实践与认识》2015年第7期133-140,共8页Mathematics in Practice and Theory

基　　金：国家重大科技专项(2011ZX05010-002)

摘　　要：影响苏里格气田致密砂岩气藏水平井段内多缝体积压裂效果的裂缝因素为裂缝条数、裂缝长度、裂缝导流能力、裂缝间距和缝宽.揭示裂缝参数对水平井段内多缝体积压裂效果的影响及影响程度的主次关系,优选合理压裂裂缝参数已成为必须解决的紧迫问题之一,它是制约水平井在苏里格致密砂岩气藏应用的技术瓶颈.针对苏里格气田致密砂岩气藏水平井段内多缝体积压裂效果多衡量指标、多影响因素的特点,运用正交试验设计结合灰关联分析法对水平井段内多缝体积压裂效果的各个影响因素进行了分析.应用结果表明,正交灰关联分析法能给出各指标影响权重大小、因素影响主次顺序及最优方案,该方法避免了仅通过单一评价指标来进行决策的不科学性,可为压裂方案的优化设计和施工提供可靠理论依据.The fracture factors for Affecting multiple crack volume fracturing effect of horizontal well are fracture number, fracture length, fracture conductivity, fracture spacing, fracture width in Sulige Tight sandstone gas reservoir. Reveal fracture parameters on influencing multiple crack volume fracturing effect of horizontal well,and Primary and secondary order of Influence degree, optimizing reasonable fracturing parameters, become one of the pressing problem must be solved. It is a technology bottleneck restrict the application of horizontal well in Sulige Tight sandstone gas reservoir. Aim at the characteristics of multiple crack volume fracturing effect of horizontal well with many measures and many influencing factors in Sulige Tight sandstone gas reservoir, Analysising influencing factors of multiple crack volume fracturing effect of horizontal well with grey relation analysis method of orthogonal trial. The results show that grey relation analysis method of orthogonal trial can give the index factors affecting weight size, primary and secondary order and the optimal solution, this method avoids the only through a single evaluation index for making decision is not scientific, providing reliable theoretical basis for the optimization design and construction of fracturing scheme.

关 键 词：致密砂岩气藏 水平井 体积压裂 影响因素 正交试验设计 灰色关联分析 

分 类 号：TE375[石油与天然气工程—油气田开发工程]