水平井压裂近井参数分析  

ANALYSIS OF NEAR-WELLBORE PARAMETERS FOR FRACTURED HORIZONTAL WELLS

作　　者：刘欣[1,2] 刘同斌[3] 赵立强[2] 王强[1] 

机构地区：[1]中国石油西南油气田分公司,四川成都610500 [2]西南石油大学石油工程学院,四川成都610500 [3]中国石油四川石油管理局,四川成都610500

出　　处：《大庆石油地质与开发》2010年第3期118-120,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：中石油西南油气田分公司博士后项目“四川须家河组水平井（大斜度井）压裂机理及实验研究”（20070309-05）资助.

摘　　要：近井裂缝几何形状决定了压裂设计参数及压后效果，利用水平井井筒周围应力分析及能量守恒等理论，给出了计算近井裂缝几何形状的方法，比较了不同转向角度的缝宽及对应压降。算例结果表明，转向角度越大，裂缝的缝宽越小，利用分析近井参数的方法可进行支撑剂粒度选择、段塞量设计、施工压力预测，降低砂堵等施工风险，为压裂设计提供科学的理论指导。The near-wellbore fracture geometry is critical both to hydraulic fracture design parameters and the posttreatment well performance. Based on the ambient stress analysis of horizontal bore hole and the theory of energy conservation, the method to calculate the geometry of near：wellbore fracture is established, and the fracture width with different steering angles and the corresponding pressure drop have been correlated. The results indicate that the higher steering angle means smaller fracture width. The method of near-wellbore parameters analysis may be applied to the selection of grain grade of proppant, the design of slug, the prediction of operation pressure, and control of operation risks. This method can provide the fracture design with scientific and theoretical guide.

关 键 词：压裂 设计 水平井 

分 类 号：TE357[石油与天然气工程—油气田开发工程]