Relaxation shift in rocks containing viscoelastic pore fluids

摘要: ABSTRACTThe interaction of pore stiffness with fluid moduli leads to shifts in viscoelastic relaxation times the overall rock relative those fluids alone. Crack-based and substitution models indicate that stiff pores cause little shift, whereas thin, soft cracks can shift by several orders magnitude toward lower frequencies (longer times). Pore also causes a apparent temperature dependence viscoelasticity higher temperatures when are present. As more conventional problems, quantifying effects on properties requires information about crack distributions addition complex viscosity pure fluid.