气体低速非达西渗流特征参数分析与计算  

Characteristic Parameter Analysis of Low Velocity Non-Darcy Flow of Gas

作　　者：刘晓旭[1] 胡勇[1] 朱斌[1] 李宁[1] 赵金洲[2] 

机构地区：[1]西南油气田分公司勘探开发研究院,四川成都610051 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《断块油气田》2006年第6期27-29,共3页Fault-Block Oil & Gas Field

摘　　要：低渗透气藏气体渗流特征参数的研究是合理开发低渗透气藏的基础和出发点,而目前对于低渗透气藏气体渗流特征参数的研究还只是停留在定性分析的水平上,还没有形成一整套建立在理论分析之上、能够完整描述气体渗流规律的特征参数数学模型。文中将理论分析和数学推导相结合,建立了包括“滑脱动力”、“启动压差”、“综合渗流速度”及“临界压力”和“临界压力”平方梯度”在内的能够完整描述气体渗流特征规律的数学模型。论文的研究将有利于认识低渗透气藏的渗流规律,为低渗透气藏的合理开发提供理论依据。As the proportion of low permeability gas reservoir in the explored gas reserves increases gradually,the development of low permeability gas reservoir attracts more attention.The confirmation of gas seepage characteristic parameter in low permeability gas reservoir is the groundwork for the development of low permeability gas reservoir,but we are still stay on the qualitative analysis stage and have not develop a set of characteristic parameter mathematical model which can describe the gas seepage law integrally in low permeability gas reservoir.The paper combined the theoretical analysis with the mathematical deduction,developed a set of characteristic parameter mathematical model which includes “slippage driving force”,“start-up pressure drawdown”,“general seeping velocity” and “critical pressure and critical pressure gradient”.The study in the paper can help us to realize further seepage law in the low permeability reservoir,confirm seepage mechanism,and also provide a theoretical foundation for the rational development of low permeability gas reservoir.

关 键 词：低渗透气藏 滑脱效应 启动压差 临界点 低速非达西渗流 特征参数 

分 类 号：TE312[石油与天然气工程—油气田开发工程]