井口注汽参数对井底热蒸汽干度的影响研究  

Effect of Wellhead Injection Parameters on the Bottom of the Hot Steam Dryness

作　　者：秦健飞[1] 赵琳[1] 

机构地区：[1]中石化胜利油田现河采油厂,山东东营257000

出　　处：《内蒙古石油化工》2015年第22期107-110,共4页Inner Mongolia Petrochemical Industry

基　　金：中国博士后科学基金资助项目(2014M561961)

摘　　要：向地层中注入热蒸汽是开发稠油油藏最有效的方式之一。注蒸汽过程中,伴随着水蒸汽压力、温度的不断变化,水蒸汽变为气液两相流体,蒸汽干度、密度、粘度等参数也随之发生改变。本文应用Beggs-Brill方法计算注蒸汽过程中井筒压力场的分布,结合井筒传热模型计算了注入蒸汽到达井底时的蒸汽干度,并研究了井口注入参数,如注入蒸汽质量流量、注入压力、注入蒸汽干度对井底蒸汽干度的影响。结果表明,在注汽过程中应选用较大的注入速度、较低的井口注入压力和较高的井口干度,这样不仅可以降低注蒸汽过程中的热损失,提高井底蒸汽干度,还能缩短注蒸汽过程,提高注热效率。Hot steam injected into the formation to develop heavy oil reservoirs is one of the most effec-tive ways.With the water vapor pressure and temperature changing,the steam dryness,density,viscosity and many other parameters changed as well.In this paper,Beggs-Brill method and Ramey model are ap-plied to calculate the parameters in the bottom of the well.It shows that,choosing the higher inj ection rate,the lower inj ection pressure and the higher steam dryness is benefit for the steam inj ection process. In this way,the bottom steam dryness will be improved and can short the steam inj ection process,improve the thermal efficiency of inj ection.

关 键 词：热蒸汽 Beggs-Brill方法 井筒热损失 蒸汽干度 井口注入参数 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程]