胜利油区已开发油田提高采收率技术思路与建议

Technical train of thought and suggestion on EOR for the developed oilfields in Shengli petroliferous province

胜利油区已经整体进入特高含水率开发期 ,提高老油田采收率直接关系到油田的持续稳定发展。分析了胜利油区已开发老油田提高采收率的现状。针对油区陆上整装构造油藏、高渗透断块油藏、低渗透断块油藏、热采稠油油藏及三次采油油藏的具体特征 ,提出了提高采收率的技术思路。建议对低渗透及稠油热采油藏进行技术储备工作 ,开展特殊结构井、开发地震及套管修复等技术攻关。

Improving the oil recovery of old oilfields will affect their continuous and stable development for the whole Shengli petroliferous area has entered extra high water cut period. The current situation of EOR for the developed old oilfields in Shengli is analyzed. The technical train of thought of EOR is proposed in accordance with the concrete features of the complete?structure reservoirs, high?permeability fault?block reservoirs, low?permeability fault?block reservoirs, heavy oil reservoirs by thermal recovery and the reservoirs by tertiary recovery. It is suggested that technical reserves should be completed in the low?permeability and heavy oil by thermal recovery reservoirs, and key technical problems should be tackled on the special?structure wells, production seism and casing repair.