地下流体脱气对油藏产液能力影响研究  

Study on the Effect of Underground Fluid Degassing on Reservoir Production Capability

作　　者：李德生[1] 蒋远征[1] 焦军[1] 王晶[1] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,陕西西安710021

出　　处：《辽宁化工》2017年第10期959-962,共4页Liaoning Chemical Industry

摘　　要：H区属于弱挥发性油藏,投入开发后地下流体脱气较严重,产液产油指数下降较快,室内试验结果表明,地层压力低于饱和压力后,脱气造成流体的粘度、渗透率变化幅度较大。本文通过相渗曲线变化探讨脱气前后油藏的无因次采液采油指数变化规律,对后期进一步深入分析脱气油藏的开发规律有一定的指导作用。After a weakly volatile reservoir is put on production（for example H block in this paper）, underground fluid degases severely, which will lead to declination of liquid and oil production index. Laboratory experiments show that the degassing can lead to substantial change of fluid viscosity and reservoir permeability. In this paper, the dimensionless liquid and oil production index change law before and after degassing was discussed and studied by comparing relative permeability curves, which could provide some guidance for further study of degassing reservoir development law.

关 键 词：脱气 相渗曲线 无因次采液指数 

分 类 号：TE122[石油与天然气工程—油气勘探]