Numerical Modeling of the Effect of the Pore Pressure Gradient on the Propagation of Hydraulic Fracturing Cracks

Abstract

The paper analyzes the influence of the pore pressure gradient on the propagation of hydraulic fractures, stress distribution inside and around the wellbore by the method of theoretical analysis. A geometric model of hydraulic fracture opening under the action of a pore pressure gradient has been created. Using the software (“RN-GRID”), the propagation of hydraulic cracks in a rock sample under the action of pore pressure was calculated.The influence of piezometric wells on the opening and propagation of hydraulic fractures is analyzed.