Status and solutions of deep fluid diversion and profile control technique

Water flooding remains a main production mode in ‘double-high’ (high water cut and high percentage of reserve recovery) oilfields. After the recent progress and problems of deep fluid diversion and profile control technique were analyzed, some suggestions were proposed. Firstly, it is necessary to further study the basic oil reservoir theories in relation to deep fluid diversion and profile control and work on the quantitative description technology for dominant water path distribution, so as to characterize the seepage laws of oil reservoir with dominant water paths at the late stage of high water cut development. Secondly, innovative ideas should be held to ensure the “effective deep placement” of plugging agent from the aspects of technique and materials. And lastly, online injection equipment test and application should be accelerate, so as to realize intensive and synchronous development of deep fluid diversion and profile control technique.