Guangui Zou

Abstract Coalbed methane, a key resource in natural gas exploration, is closely linked to the fracture networks within coal beds. Unlike shale or tight sandstone reservoirs, coalbed methane reservoirs feature a dual-porosity/fracture system consisting of matrix pores and cleats. While prior studies have examined the impact of cleat orientation on P-wave velocity and permeability anisotropy, joint frequency-direction analyses of dispersion and attenuation are limited.

Data Availability Statement The data that supports the findings of this study are available from the corresponding author upon reasonable request. References 1957. “Space and Time Spectra of Stationary Stochastic Waves, With Special Reference to Microtremors.” Bulletin of the Earthquake Research Institute 35: 415–456. https://doi.org/10.15083/0000033938. , , , and . 2002.

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