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
赵义强 1万钧 1罗启源1
作者信息
- 1. 中海石油(中国)有限公司深圳分公司 广东 深圳 518054
- 折叠
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.
Abstract
Aiming at fixing producer-injector spacing for fracturing deviated wells with row pattern in low-permeability 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 producer-injector 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Key words
Low-permeability Reservoirs/Pressure distribution/Three-dimensional Anisotropy/Fracture/producer-injector spacing引用本文复制引用
出版年
2024
NETL
NSTL
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