摘要
注气开发生产过程中产生的驱替前沿是一个气油交替的突变界面,在数学上是一个间断界面。常规的Muskat分相渗流模型只适用于连续介质的油藏,根据气驱毛细管中的驱替现象,将通过前沿界面的产气量分解为2部分,即气驱油和气驱气产生的流量,以渗流微元为对象,建立了离散形式的渗流模型。通过实例可以发现,分相驱替加权法模型预测的注气饱和度的分布更为合理。
The replacing front generated in the process of gas injection production is a mutant interface alternating oil and gas,in mathematics,it is a discontinuous interface.The conventional Muskat fractal phase flowing model is suitable only to the reservoir with continuous media,according to the replacement phenomena in capillary while gas replacement,the gas out put through the front interface is divided into two parts,i.e.the flow rate generated by gas replacing oil and gas replacing gas,taking micro-flow element as object,the flow model with the style of variance is set up.Case study shows the saturation distribution of gas injection expected with the weighting model of fractal phase replacement is more reasonable.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第1期67-69,84,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家自然科学基金项目(50774062)
关键词
注气开发
驱替前沿
间断
渗流模型
gas injection production
replacement front
discontinue
flow model
