东辛油田特高含水期提高采收率的实践

复杂断块油田因其构造的复杂性和储层物性、流体性质的巨大差异性，严重制约着油田开发管理水平和油田采收率的提高。层系概念模糊和层系划分太粗，又直接影响着中低渗透油层的潜力发挥。1997年以来，胜利油田东辛采油厂综合运用细分开发、攻欠增注、不稳定注水等多种方法，对东辛油田辛16断块区进行综合调整，增加可采储量56万吨，采收率从32．55％提高到37．79％，探索出了一整套复杂断块油藏特高含水期提高采收率的配套技术和方法，对复杂断块油藏提高采收率具有重要的指导和借鉴意义。

Practice for Improving the Recovery During the Super-High Water Cut in Dongxin Oil Field

The management level and enhanced recovery of the complicated fault block oil field were restricted seriously by the complication of structure, the heterogeneity of reservoir properties and the great difference of fluid properties. The development potentialities for the reservoir of the high and low permeability were influenced directly by the fuzzy formation concept and the rude formation division. Since 1997, the Dongxin Oil Production Plant of Shengli Oil Field has used many methods, including subdivision of formation, supplementary injection for the formation which did not have enough injection, and unsteady water injection, toadjust synthetically the development pattern of the Xin 16 Fault Block. Based on the above measures, the recoverable oil reserve is increased 560,000 ton. The recovery was enhanced to 37.79% from 32.55%. And a complete set of mating techniques and methods were put forward to enhance the recovery for the complicated fault block oil field which is in the stage of super high water cut. These methodsprovided in this paper will have an important guidance and reference meaning in enhancing the recovery of the complicated fault block oil field