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.
出处
《断块油气田》
CAS
2006年第6期27-29,共3页
Fault-Block Oil & Gas Field
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
Low permeability gas reservoir,Slippage effect,Start-up pressure drawdown,Criuical point,Low velocity non-Darcy flow,Characteristic parameter.
