低渗透油藏泡沫驱影响因素敏感性分析  

Sensitivity analysis for foam flooding in low-permeability reservoirs

作　　者：陈奕洲 廖新维[1] 赵晓亮[1] 陈志明[1] 祝浪涛 郭新慧[1] 李朗[1] 

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室,北京102249

出　　处：《陕西科技大学学报（自然科学版）》2015年第3期109-115,共7页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(U1262101)

摘　　要：泡沫驱在提高低渗透油藏采收率上起着重要作用,但关于泡沫驱效果的敏感性分析却罕见报道.为弥补这方面空白,采用数值模拟方法,对低渗透油藏泡沫驱的各影响因素进行了敏感性分析.结果表明,泡沫注入浓度、泡沫半衰期以及泡沫吸附量等在某一小区间变化时,采收率变化明显,与气驱相比采收率最大提高15.5%;而渗流速度则对采收率影响甚微.因此,可确定泡沫注入浓度、泡沫半衰期以及泡沫吸附量等为影响泡沫驱效果的敏感因素,这为低渗透油田实施泡沫驱提高采收率提供了参考借鉴.The merits and demerits of different kinds of enhancing oil recovery methods used in low permeability reservoirs were compared, and the foam flooding was selected to enhance the recovery of low permeability reservoirs. In this paper, we used numerical simulation method to analyze the sensitivities of parameters which used in foam flooding. The result shows.as the inject foam concentration,the decay time of foam and the amount of adsorption change at a small interregional, the oil recovery change obviously and could be higher 15.5 than gas flooding. But the gas velocity seems has no affect to oil recovery, so it can be sure that the inject foam concentration,the decay time of foam and the amount of adsorption are the most sensitivity parameters of foam flooding. The result can also provide references to foam flooding of low-permeability reservoirs.

关 键 词：低渗透油藏 泡沫驱 敏感性分析 数值模拟 

分 类 号：TE357[石油与天然气工程—油气田开发工程]