Comprehensive adjustment technique on injection-production pattern of South 38 fault block in Zhangdian oilfield

In view of the problems occurred in South 38 fault block in Zhangdian oilfield,such as low controllable degree of wa-ter flooding,big difference in interlayer production,imperfeet injection-production pattern in some areas and low level of pressure maintenance,a comprehensive adjustment tech nique on injection-production pattern has been carried out,on the basis of research covering well pattern adaptability,well pattern potential and economic boundaries.