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.
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)
出处
《石化技术》
CAS
2024年第4期211-212,130,共3页
Petrochemical Industry Technology
关键词
低渗油藏
压力分布
三维各向异性
压裂
注采井距
Low-permeability Reservoirs
Pressure distribution
Three-dimensional Anisotropy
Fracture
producer-injector spacing
