根据我们油田地质特征、在注水开发中,后期就开始采取细分开发层系、加密井网、提高排液量、从而延长油田稳产期。本文总结了油田在中高含水期后改善油田开发效果的几种做法,并以葡北二断块为例,说明采用这几种方法综合运用所取得的效果。 According to the geological characteristics of our oilfields, in the development of waterflooding, the development of stratigraphic layers, the formation of wellbore, and the increase of drainage volume are started to be carried out in later period, thereby prolonging the stable production period of the oilfield. This article summarizes several approaches to improve the oilfield development effect after the medium and high water cut periods. Taking the fault block of the North Pubei as an example, the effect of the comprehensive utilization of these methods is illustrated.