三维各向异性的低渗油藏排状定向井井网压裂注采井距研究  

A Study on the Distance between Fracturing and Production Wells in Low Permeability Oil Reservoirs with Three Dimensional Anisotropy and Directional Well Patterns

作　　者：赵义强 万钧 罗启源 Zhao Yiqiang;Wan Jun;Luo Qiyuan(CNOOC(China)Co.,Ltd.Shenzhen Branch,Shenzhen,Guangdong 518054)

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东深圳518054

出　　处：《石化技术》2024年第4期211-212,130,共3页Petrochemical Industry Technology

摘　　要：针对各向异性低渗透油藏排状定向井井网压裂注采井距问题,推导其典型井网单元的压力和压力梯度分布公式,重点研究注采井间主流线上沿程压力变化规律及其对注采井距的影响。结果表明:各向异性对于注采井间压力分布有显著影响;压裂直井井网井间压力分布均匀,可以用更大注采井距,井距是未压裂情况下的约3倍。Aiming at fixing producer-injector spacing for fracturing deviated wells with row pattern in lowpermeability reservoirs,this paper deduces the pressure and pressure gradient distribution formulas of typical well pattern units,focusing on the pressure variation patterns along the main line between injector and their impact on producer-injector spacing.The results show that anisotropy has a significant impact on the pressure distribution between injectors and producers;the pressure distribution between fractured vertical wells is uniform,and a larger producerinjector spacing can be accepted,which is about 3 times that of the unfracked situation.

关 键 词：低渗油藏 压力分布 三维各向异性 压裂 注采井距 

分 类 号：TE53[石油与天然气工程—油气田开发工程]