注水驱油过程中地层流体渗透各向同性时的压力分布

通过把渗流的偏微分方程变成其弱解积分形式,针对油田的某一井排油水井的分布情况,用有限元法计算了注水驱油过程中储层渗透各向同性时的油、水井稳态压力分布和瞬态压力分布。结果表明,在注水加压驱油时,压力有一个逐渐变化的过程,最后达到新的稳定压力平衡状态,并揭示了地层流体的非稳态渗流是稳态渗流的特例。

Pressure Distribution of Fluid Osmosis at Isotropy through Petroleum Reservoir Bed in the Process of Injection-production

Through turning the partial differential equation of the fluid osmosis at isotropy into the weak integral form, the pressure distribution of steady state and instantaneous state through petroleum reservoir bed in the process of injection-production is calculated by the method of finite element in accordance with the distribution situation of oil and water wells in a well area. Result shows that the pressure gradually changes into a new balanceable state, and the unsteady fluid osmosis is a special case of the steady fluid osmosis of the stratum fluid in the process of injecting water, increasing pressure and expelling oil.