人工裂缝对水平井产能的影响情况分析  

Analysis on Influence of Artificial Fractures on Horizontal Well Productivity

作　　者：薄云鹤 魏旭 王浠云 王俊锋 BO Yun-he;WEI Xv;WANG Xi-yun;WANG Jun-feng(Northeast Petroleum University,Heilongjiang Daqing 163318,China;Daqing Oilfield Company No.4 Oil Production Plant,Heilongjiang Daqing 163000,China;Daqing Oilfield Company No.5 Oil Production Plant,Heilongjiang Daqing 163000,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]大庆油田第四采油厂,黑龙江大庆163000 [3]大庆油田第五采油厂,黑龙江大庆163000

出　　处：《当代化工》2018年第6期1239-1242,共4页Contemporary Chemical Industry

基　　金：东北石油大学研究生创新科研项目"徐深火山岩气田扩大改造体积数值模拟研究";项目号:YJSJD2017-002NEPU

摘　　要：水平井压裂施工过程中先产生的裂缝会使得近井周围的应力场发生明显的变化,这种变化直接影响了压后水平井产能预测的准确性。在储层和裂缝内流体控制方程的基础上,考虑内外边界条件,建立了压裂水平井产能的数学模型,利用该模型进行模拟计算,研究并分析了裂缝条数、裂缝长度对压裂水平井压力场分布和产能的影响规律。分析结果表明:裂缝条数增加到一定数量时,不会再对水平井的产能产生明显提升;缝长的增加并不能无限度的提升水平井产能;研究的结果为增加压裂水平井产能提供了重要的理论依据。The fractures first generated during of horizontal wells can cause significant change of the stress field near the wellbores. This change directly affects the accuracy of the horizontal well productivity prediction after the fracturing. Based on the fluid control equations of reservoirs and fractures, considering the internal and external boundary conditions, a mathematical model for the productivity prediction of fractured horizontal well was established. This model was used in the simulation calculations to study and analyze the influence law of the number of fractures and the length of fractures on the stress field distribution and productivity of fractured horizontal well. The analysis results showed that, after the number of cracks increased to a certain number, the productivity of horizontal wells was not significantly improved; the increase of crack length could not indefinitely increase the productivity of horizontal wells; The result of the study can provide an important theoretical basis for increasing the fractured horizontal well productivity.

关 键 词：应力场 裂缝条数 裂缝长度 产能 

分 类 号：TE357.14[石油与天然气工程—油气田开发工程]