摘要
基于双重介质,建立基质和裂缝的运动方程。考虑基质和裂缝的黏性流及Knudsen扩散作用,采用Langmuir等温吸附方程表征气体分子在基质孔隙的吸附与解吸附作用。同时,通过Knudsen扩散的质量流量公式,分析孔隙半径、压力和温度变化对质量流量的影响。
Based on dual porosity medium,the kinematic equations of matrix and fracture are built.Viscosity flow,Knudsen diffusion and gas adsorption-diffusion in pore have been considered in matrix.Langmuir isothermal adsorption equation is also used to characterize adsorption and desorption of gas molecules in matrix pores.Meanwhile,the influence of pore radius,pressure and temperature on mass flow is studied through mass flow rate formula of Knudsen diffusion.
作者
刘骞
Liu Qian(Great Wall Drilling Company,CNPC,Panjin Liaoning 124010,China)
出处
《重庆科技学院学报（自然科学版）》
CAS
2018年第2期35-38,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家科技重大专项"大型油气田及煤层气开发"子项目"四川盆地及周缘页岩气形成富集条件
选区评价技术与应用"(2017ZX05035004)
关键词
页岩气
渗流
Knudsen扩散
双重介质
shale gas reservoir
seepage flow
Knudsen diffusion
dual porosity medium
