桥口非均质复杂断块油田层间接替技术应用

Application of Interlayer Replacement Technique in Qiaokou Inhomogeneous fault Block Oilfield

桥口非均质复杂断块油田，层间非均质性强，层间干扰十分严重，水驱动用差异大，Ｉ类储层见效水淹后，Ⅱ、Ⅲ类储层水驱动用程度差，剩余油潜力大。结合油田地质特征及开发实际，精细地质基础研究和工艺技术研究，应用采油井堵水、注水井高压分注、增注技术，调整注水和产液结构，实现了层间产量接替，油田开发由Ⅰ类层向Ⅱ、Ⅲ类层转移，有效地改善了油田开发效果。

In Qiaokou inhomogeneous complex fault block oil- field, interlayer heterogeneity is strong; interlayer interfer- ence is serious ; large differences exist between producing reserves of waterflooding in each layer;and residual oil po- tential is large.Interlayer production replacement is realized through oil well water plugging, separated layer water- flooding and enhanced water injection technologies on base of fine geological research and technology study. Oil layers of type Ⅱ and Ⅲ are put into production to replace layers of type Ⅰ.