... reasons. For each phase in the well-life, one needs to carefully distinguish between the two physical impacts of pressure changes on the hydraulic fracture system. The net pressure on the surface of the hydraulic fractures is what alters the local stress state in the reservoir space near the fractures...

... solid elements (called rods where the change of the relevant normal-stress component in a rod is set equal to the pressure change. However, the role of fluid-pressure change is felt throughout the lattice, since changes of state in the rods create changes of state in the junctions . A Textural image B...