用钻特殊井方法提高采收率

CONSIDERATION OF THE CURRENT ENHANCED OIL RECOVERY

蒋恕 李子丰 阳鑫军 刘乃震

Jiang Shu Li Zifeng Yang Xinjun Liu Naizhen

中国地质大学, 湖北武汉 430074 辽河石油勘探局, 辽宁盘锦 124010

尽管三次采油过程的各种提高采收率技术在经济、合理、最大限度的开采石油方面发挥了重要作用,但由于许多技术目前尚处于部分工业运用及实验室研究阶段,加上许多技术本身的局限性和油藏的复杂性,导致其效果并不理想。随着钻井技术的进步,水平井、侧钻水平井、分支井、大位移井等特殊井在提高石油采收率上的贡献日见报道,但是从观念认识上,往往没有把这些钻井方法列入提高石油采收率的技术之列。文中在讨论目前各种提高采收率技术的优点和不足之处的基础上,提出了对现有采收率技术不适用的油藏而言,用特殊井提高采收率比现有各种提高采收率技术优越,并阐述了钻井方法提高采收率技术的优点及其前景。

Enhanced oil recovery(EOR) is the critical technology for the oil field development, despite the great contribution the existing EOR methods such as chemical flooding process, MEOR etc during tertiary oil recovery have many limitations and defects, some of them failed because of complex reservoir, some are still situated on the stage of experiment.although horizontal wells, multibranch wells and extended reach wells have shown their advantage for EOR, the drilling method is not considered as a EOR method, this paper verifies the advantage of EOR by drilling, its purpose is to show the EOR by complex wells is reasonable and prosperous.

10.3969/j.issn.1000-7393.2002.03.008