Abstract
Multiscale mass transport behavior is obvious during shale gas development. Considering multiscale pore structure, multiple gas transport mechanisms and multiple micro effects, a unified mathematical model of shale equivalent permeability was constructed. Then the characteristics of shale permeability during a real production process was analyzed. The main impacts of multiscale mass transport of shale gas was investigated, including gas-solid properties, pore geometry and its connectivity, and temperature and pressure conditions. An evaluation index of multiscale mass transport behavior of shale gas was then put forward, which was the proportion of pores with diameter between 50 and 200 nm. A specific methodology on evaluating multiscale mass transport of shale gas was presented based on mesoscience. Considering the main problems in shale gas development, the coordination mechanisms for multiscale mass transport processes was put forward, which includes controlling water phase trapping damage, enlarging and connecting nanopores in matrix, and accelerating gas desorption-diffusion.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
