国内外堵水调剖技术最新进展及发展趋势

Technologies of water shut-off and profile control: An overview

油水井堵水调剖是严重非均质油藏控水稳油、提高水驱效率的重要技术手段。我国油田多数进入高含水或特高含水开采期后,常规的堵水调剖技术已不能满足油田生产需求,深部调驱技术的研究及应用等取得了许多新进展,在改善高含水油藏水驱开发效果方面获得了显著效果。通过系统分析国内外调剖堵水技术现状及存在问题,根据我国高含水油田开发现状及需求,提出了深部液流转向改善水驱开发效果的技术发展趋势,即立足高含水油藏开发后期实际需要,在重新认识油藏现状基础上,以廉价高效的深部转向材料开发为核心,开展深部液流转向改善水驱配套技术及机理理论研究,实现对高含水油藏深部水流优势通道的干预,使水流转向,达到改善高含水油藏水驱效率的目的。

Water shut-off and profile control is an important technology for improving water flooding efficiency of seriously heterogeneous reservoir, especially for the mature reservoir with higher water-cut. New methods have been put forward and applied during the past years to meet the production demand, which made significant contribution to the mature reservoir development. This paper reviews the traditional techniques, indicates the problems need to be solved, and proposes the related tendency. For the mature reservoir chartered by higher water-cut and serious heterogeneity, the research of desirable water shut-off and profile control technologies should put emphasis on the development of depth water divert materials with lower cost and higher quality, simultaneously take efforts to investigate the corresponding mechanisms and assistant on the base of reservoir re-understanding. With such efforts the overall disadvantageous water distribution in depth reservoir can be disrupted and the improvement of water-flooding efficiency can be achieved.