In-depth Profile Control Technologies in China—A Review of the State of the Art

摘要

In the process of waterflooding and polymer flooding, the oil displacement efficiency is poor because of the heterogeneity of reservoirs, the conventional profile control and water shutoff technology can no longer satisfy constantly production demand. So, in-depth profile control technology has been developed in recent years, and an obvious effect is obtained in improving development effects of waterflooding and polymer flooding in high water-cut stage. In this article, in-depth profile control technology is widely analyzed, and a development tendency of this technology is proposed; that is, a complete study of in-depth profile control and polymer flooding should be developed based on the sufficient understanding of reservoir status, ad- vantage channels should be controlled and fluids diverted, and the oil displacement efficiency of waterflooding and polymer flooding for high water-cut stage could be improved.