Mechanism and influence factor of hydrocarbon gas diffusion in porous media with shale oil

Due to the compactness of shale reservoir matrix and high conductivity fractures, hydrocarbon gas injection huff puff method or displacement is most realistic technology improve oil recovery. The diffusion mechanism plays an important role in development; therefore, it crucial figure out factors influencing diffusion, which could enhance In this paper, a physical simulation experiment designed evaluate ability gas. Diffusion experiments are conducted simulate bulk fluid porous media, learn about how pressure, permeability fracture affect behavior. coefficients between core sample compared. experimental results show that coefficient mass transfer capacity positively correlated with pressure: increasing these parameters can promote process. saturated significantly less than crude oil, indicates media seriously affects process oil. Fractures have little impact on Combined numerical simulation, factor development effect clarified. recovery enhances then decreases coefficient. Cited as: Wanyan, Z., Liu, Y., Li, Zhang, C., Xue, T. Mechanism influence Advances Geo-Energy Research, 2023, 7(1): 39-48. https://doi.org/10.46690/ager.2023.01.05