This study investigates shale–fluid interactions through experimental approaches under simulated in situ conditions to determine the effects of bedding plane orientation on fluid flow through shale. Current wellbore stability models are developed based on isotropic conditions, where fluid transport coefficients are only considered in the radial direction. This paper also presents a novel mathematical method, which takes into account the three-dimensional coupled flow of water and solutes due to hydraulic, chemical, and electrical potential imposed by the drilling fluid and/or the shale formation. Numerical results indicate that the presence of microfissures can change the pore pressure distribution significantly around the wellbore and thus directly affect the mechanical strength of the shale.
The Effects of Anisotropic Transport Coefficients on Pore Pressure in Shale Formations
Contributed by the Petroleum Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received October 7, 2013; final manuscript received December 8, 2014; published online December 30, 2014. Assoc. Editor: Arash Dahi Taleghani.
Dokhani, V., Yu, M., Miska, S. Z., and Bloys, J. (May 1, 2015). "The Effects of Anisotropic Transport Coefficients on Pore Pressure in Shale Formations." ASME. J. Energy Resour. Technol. May 2015; 137(3): 032905. https://doi.org/10.1115/1.4029411
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