摘要
对油藏进行注水开采时,地下岩层渗流场能引起地层应力场的改变。采取从大庆油田南二区西部选取的典型井组,基于有效应力原理,研究水驱注入方式下地层的孔隙压力分布情况及其动态演化规律,地层有效应力分布情况及其动态演化规律,揭示出水驱注入方式对地层压力场和有效应力场的影响规律。研究结果表明,在对油藏采取注水开采时,流―固耦合的作用影响显著,能够促使地层压力场和有效应力场发生很大变化。研究结果可为后续的水驱方式下注入参数界限值、计算方法研究以及复杂地质构造下的注入参数界限提供理论性指导。
The seepage field can cause the change of formation stress field when the oil reservoir is injected with water. This article takes the typical well group which is selected from the western region of the south two of the west of Daqing oil field. Based on the principle of effective stress,the distribution of pore pressure and its dynamic evolution of formation under water drive injection are studied,and reveals the effect of water flooding on formation pressure field and effective stress field is revealed. The research results show that the effect of fluid structure interaction on reservoir injection is significant,which can lead to great changes in formation pressure field and effective stress field. The results of this study can provide a reliable theoretical guidance for the further study of the boundary value of injection parameters,the calculation method and the boundary of injection parameters under the complicated geological structure.
出处
《武汉轻工大学学报》
2016年第4期61-66,共6页
Journal of Wuhan Polytechnic University
关键词
注水
渗流场
地层压力场
有效应力场
流—固耦合
water injection
seepage field
formation pressure field
effective stress field
fluid-structure interaction
