低渗透微尺度孔隙气体渗流规律
GAS FLOW IN MICRO-SCALE PORE OF LOW PERMEABILITY POROUS MEDIA
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摘要: 微尺度条件下气体流动特性的研究是现代渗流力学前沿领域之一. 分析了低渗透岩石饱和气体渗流实验结果，探索了微尺度孔隙气体渗流规律，探讨了气体非线性渗流力学机理，发现了低渗透岩石微尺度孔隙气体与液体渗流遵循同一形式的运动定律，建立了气体与液体非线性运动定律统一模型. 结果表明：新模型与实验结果吻合很好，为微尺度孔隙气体微流动特性研究提供了新的理论依据，对工程地质环境保护及地下流体资源开发有重要指导意义.Abstract: The study on characteristics of gas micro-flow inmicro-scale pores is one of important fields of modern mechanics offluids in porous media. Results of experiments on saturated gas flow inpores of low-permeability rock were analysed. Laws of gas flow inmicro-scale pores were explored. A mechanism of gas nonlinear flow in thelow-permeability rock pores was discussed. It was found that both gas andliquid nonlinear flow in micro-scale pores of the low-permeability rockfollow the same flow law. A united model for gas and liquidnonlinear flow in micro-scale pores of low-permeability rock wasestablished. Results show that there is a good agreement between data of themodel and experiments. The above results can serve a basis for newtheoretical explorations oncharacteristics of gas micro-flow in micro-scale pores. And they can also serve as a reference for geological environmentpreservation and development of underground fluids sources.
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Keywords:
- low permeability media /
- micro-scale
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