大庆油田二次开发技术策略及实践

本文简要地概述了大庆长垣老油田进行二次开发在"三重一优"的技术路线指导下,进一步较大幅度地提高水驱采收率的重大意义。通过几年的探索与实践,已初步形成了二次开发体系及配套技术。尽管在发展道路上还面临许多新的挑战,但从目前效果看,已经初显它独有的优势,长垣水驱年产油量在"十一五"前四年平均减产148万吨,2010年控制到97万吨,2011年锐减至7万吨,确保了长垣油田水驱产量比例继续保持在60%以上。二次开发让有着50多年历史的大庆长垣老油田焕发出新的生机活力。

The Technical Policy and Practice of the Secondary Development in Qaqing Oil-field

Changyuan Oil-field of Qaqing carried on the secondary development in the guide of reconstruction of underground understanding system, well pattern structure, ground technological process and optimizing of flooding pattern. This paper briefly summarized the importance of the enhance oil recovery by water flooding. Changyuan Oil-field has already preliminary formed the developing system and mating technology of the secondary development through a few years searching and practice. Even if the secondary development would be faced with numerous challenges in the developing path, it has been already showed the particular superiority at present. Annual reduction of output is gradually diminished from 148×104t at front four years of Eleventh Five-year plan to 97×104t at 2010 and 7×104t at 2011. The yearly rate-oil production ratio of water flooding is keeping above 60 percent. The secondary development allowed the Daqing Oil-field with the fifty years history to glow a new lease of life.