Abstract
Integral equations are derived for a planar crack of arbitrary shape, subjected to both Normal and shear tractions as well as fluid pressure, in an infinite, fluid-saturated, poroelastic. isotropic solid. The obtained equations relate the surface tractions and fluid pressure on crack surfaces to relative crack-surface displacements and leak-off flux into the porous medium. It is intended to implement the equations in a 3D simulator of hydraulic fracturing in oil reservoirs. Some discussions are given on reductior. of the present solutions to the known ones as special cases and to pure shear mode solutions ; it is found that the poroelastic effect does not disappear even for the pure shear mode.
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