提高特低渗透油藏注水开发效果方法研究  

Research on Methods for Improving Effectiveness of Waterflooding Development in Ultra Low Permeability Reservoir

作　　者：赵刚[1] 杨学云[2] 张茂森[1] 刘建敏[2] 

机构地区：[1]中石化胜利油田有限公司桩西工艺所,山东东营257237 [2]中国石油大学(华东),山东东营257061

出　　处：《内蒙古石油化工》2007年第9期84-86,共3页Inner Mongolia Petrochemical Industry

摘　　要：胜利五号桩油田桩74块属特低渗高温深埋油藏,由于注采井距大,回注污水在炮眼、井筒及地层中结垢严重,导致注采井间难以建立有效的驱动体系和驱动压力梯度。针对注水效果差的问题,在该块采用缩小注采井距、建立行列式注采井网、通过优化钻井泥浆、完井设计,实施软化污水防垢、水力压裂引效等工艺,累积注采比达到1.6∶1,油井动液面回升,取得较好的开发效果。Zhuang-74 block at Wuhao zhuang Oilfield, Shengli, is a ultra low permeability reservoir of high temperature, which effectual flooding system and flooding pressure gradient are founded hardly between injection wells and production wells because of large producer-injector spacing and severe scaling among the perforation, wellbore and formation. Shortening producer-injector spacing and building linear rowed producer-injector net, optimizing drilling mud and well completion design are adopted in order to resolve the problems above. After taking these measures, such as softening water, scale prevention and hydrofracturing, are performed, better recovery efficiency is gained, accumulative injection-production ratio reaches 1.6：1 and liquid level of producers has been increased.

关 键 词：特低渗透油藏 小井距 注采井网 水力压裂 

分 类 号：TE348[石油与天然气工程—油气田开发工程]