王玉霞;尚庆华;王艳霞;

• 1:中国石化河南油田分公司石油勘探开发研究院

• 2:陕西延长石油(集团)有限责任公司研究院

摘要(Abstract)：

为预测CO2混相驱油井产能,基于混相驱机理,建立一注一采和五点法井网布井方式下CO2混相驱油井产能预测模型.模拟结果表明:在油层和流体相同条件下,一注一采和反五点井网布井方式下CO2混相驱相对于水驱油井产能有明显提高,油井产能随混相区向采油井的不断推移而增大,CO2与原油混相区突破后,存在某一井底流压,使油井产能达到最大,随着井底流压降低,产能减小;随段塞长度增大,采油指数与累计产油量由线性关系向乘方关系转化;随累计产油量增大,采油指数和段塞长度呈类似规律变化.CO2超临界区增大对油井产能的贡献比CO2溶于原油起到作用更明显.该研究结果为配产及油井举升工艺设计提供参考.

关键词(KeyWords)：CO2混相驱;油井产能;采油指数;混相区;累计产油;段塞长度

Abstract:

Keywords:

基金项目(Foundation):

作者(Author):王玉霞;尚庆华;王艳霞;

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