@Article{cmes.2020.07588,
AUTHOR = {Liming Zheng, Xiaodong Han, Xinjun Yang, Qingzhong Chu, Guanghui Li},
TITLE = {Dimensionless Variation of Seepage in Porous Media with Cracks Stimulated by Low-Frequency Vibration},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {122},
YEAR = {2020},
NUMBER = {3},
PAGES = {1055--1080},
URL = {http://www.techscience.com/CMES/v122n3/38387},
ISSN = {1526-1506},
ABSTRACT = {Pulse excitation or vibration stimulation was imposed on the low permeable
formation with cracks to enhance the production or injection capacity. During that
process, a coupling of wave-induced flow and initial flow in dual-porous media was
involved. Researchers had done much work on the rule of wave propagation in fractured
porous media, whereas attentions on the variation law of flow in developing low
permeable formation with cracks under vibration stimulation were not paid. In this study,
the effect of low-frequency vibration on the seepage in dual-porous media was examined
for the application of wave stimulation technology in developing reservoirs with natural
cracks. A model for seepage of single-phase liquid in porous media with cracks under
low-frequency vibration excitation was built by combining wave propagating theory for
porous media with cracks and dual-porous media seepage mechanics. A governing
equation group for the model, which was expressed by dimensionless fluid and solid
displacements, was derived and solved with a numerical method. Variable physical
properties were simulated to check the applicability of external low-frequency vibration
load on dual-porous media and a parametric study for various vibration parameters.
Stimulation of low-frequency vibration affected flow velocities of crack and rock matrix
fluids. Compared with that in single-porous media, the stimulation effect on the fluid
inner matrix of dual-porous media was relatively weakened. Different optimal vibration
parameters were needed to increase the channeling flow between the crack and rock
matrix or to only promote the flow velocity in the rock matrix. The theoretical study
examines wave-coupled seepage field in fractured porous media with results that are
applicable for low-frequency stimulation technology.},
DOI = {10.32604/cmes.2020.07588}
}