马寨油田分层开采提高采收率研究  

RESEARCH ON IMPROVING OIL RECOVERY BY ZONAL PRODUCTION IN MAZHAI OILFIELD

作　　者：房彩霞[1] 谭文宁[1] 孟建华[1] 应斌[1] 陈永[1] 周林海[1] 

机构地区：[1]中原油田分公司采油三厂,河南濮阳457001

出　　处：《西南石油学院学报》2003年第4期45-47,共3页Journal of Southwest Petroleum Institute

摘　　要：马寨油田为低渗透强亲水油藏 ,层间渗透率差异大 ,原油粘度低 ,井网密度大。由于多年的合采使油田综合含水高达 92 .9% ,工业采出程度仅为 76.6%。结合马寨油田的开采特点 ,论述了分层开采提高采收率的潜力 ,通过岩心实验证明了马寨油田分层开采可以提高采收率 ,现场应用结果证实了该结论。为该油田的层间产能接替提供了一个有效的开发方式 ,对同类油田也具有普遍的指导意义。Mazhai oilfield is a strongly water wet reservoir with low permeability, low oil viscosity, highly variable inter formational permeability and large well spacing. Up to now, the recovery is only 76.6% of the reserves while the comprehensive water cut has reached 92.9% as a result of commingled production in the past years. In this paper, the reasons of low recovery in Mazhai are discussed, and the potential of improving oil recovery by zonal production is shown. Experiments on core samples indicate that improved oil recovery could be realized by separate zone production, and the experimental results have been proven in the oilfield practice. Zonal production provides an effective development mode for keeping a high oil production in the oilfield.

关 键 词：马寨油田 分层开采 采收率 低渗透强亲水油藏 

分 类 号：TE348[石油与天然气工程—油气田开发工程]