Having exploited by affusion to Jing11 faulted block in Huabei oil-field during for over 20 years,water cut already reaches 85%,and comes into high water cut period exploited phase.

• 华北油田京11断块经过20多年的注水开发,综合含水已经达到85%25,进入了中高含水期开发阶段。