注水驱油是石油工程中提高石油采收率行之有效的一种方法,在注水方法上采用的是高压注采的形式,由于注水压力的控制不当往往会造成地层的膨胀变形,从而导致油水井的套管破损,而在储油层段的破坏是愈加明显的。在流固耦合理论的基础上,使用大型有限元分析软件ADINA对高压注采条件下的地层建立有限元模型,分析了高压注水下的地层变化形式,并且通过不同储层的不同渗透系数进行了对比分析,进而针对不同储层结构。合理控制注水压差,为预防和减少地层变形、油水井套管损坏等提供了依据。
The water flooding oil project is an effective method to improve oil recovery, the method of the high pressure of injection and production forms is used in water injection, because the water pressure control improper tend to cause the formation of swelling deformation, resulting in oil and water well casing damage, while in the reservoir section destruction is more obvious. In this thesis, based on the fluid-solid coupling theory, the use of large-scale finite element analysis software ADINA on high pressure of injection and production conditions of the formation of establis- hing finite element model, analysis of high pressure water injection under the formation change forms ,and through different reservoirs with different permeability coefficient is analyzed, then according to the different reservoir structure, reasonable control of water injection differential pressure, in order to preventing and reducing the deformation of strata, oil and water well casing damage and providing the basis.