注入水悬浮固体含量对低渗油藏的敏感性研究

STUDY ON THE SENSITIVITY OF THE SUSPENSION SOLID CONTENT IN INJECTED WATER TO LOW PERMEABILITY RESERVOIR

注水是油田稳产的重要措施,注入水的质量直接关系到原油生产。注入水的水质要求有几个方面,其中悬浮固体含量是一项重要指标。针对注入水悬浮固体含量对低渗油藏的敏感性进行岩心流动实验研究,结果表明低渗透油藏对悬浮固体含量的变化十分敏感,一旦悬浮固体含量达到临界值,油藏的渗透率明显降低。

Water injection is an important measure for stabilizing oilfield production and the quality of the injected water directly influences the crude oil production. In the requirements for injected water, its suspension solid content is one important index. To study the sensitivity of the suspension solid content in injected water to low permeability reservoirs, the core flooding laboratory test was carried out. It is shown that the low permeability reservoir is very sensitive to the change of suspension solid content. Once the latter reaches the critical value, the reservoir permeability would decline clearly.