摘要
低渗油藏相对于中高渗油藏相比,具有渗透率低、孔隙度小、粘土矿物类型丰富、含量高和岩性致密等特征,从而易导致油藏注水压力高,注入速率低,经济开采效率低等-系列问题,常规的压裂,酸化技术虽然对低渗油藏改造能起到-定作用,但作用范围和时间受到限制,表面活性剂降压增注技术以其独特的优越性越来越受到关注,大量实践表明,它能有效改善低渗油藏注水困难等问题,现场降压率可达5%～50%.本文介绍了目前国内外低渗油气藏表面活性剂降压增注技术现状,并探讨了表面活性剂降压增注技术发展趋势.
Compared with middle/high permeability, the low permeability reservoir have thecharacteristic of the low permeability and low porosity, clay mineral with various types ＆ high content,which cause to the series of problems, for example high water injection pressure and low recoveryratio. Common fracturing and acid treating technology have the effect in reforming the reservoirpermeability,but effective areas and time are limited. Surfactant technology has attracted widespreadattention with its advantage, large field application have demonstrated, it has effectively resolved theproblem of hard water injection and the reduction ration of injection pressure can attend 5～50%.Thepaper introduces the current technology of surfactant in depressurization and augmented injection andprobes into the development trend of surfactant technique in depressurization and augmented injection.
出处
《全面腐蚀控制》
2015年第2期36-38,45,共4页
Total Corrosion Control
关键词
低渗
地层伤害
降压增注
表面活性剂
发展趋势
low permeability
formation damage
depressurization and augmented injection
surfaceactive agent
development trend
