A simple and accurate description of non-linear fluid leak-off in high-permeability fracturing

摘要

Fluid leak-off in hydraulic fracturing is conventionally described using the well-known linear (Carter) model. Although this works well in low-permeability formations, the linear leak-off assumption may lead to -sometimes significant-overstimation of fracture dimensions in medium to high permeability formations. At present, no methodology is available that allows an easy estimation of the impact of non-linear fluid leak-off on fracture dimensions and on pressure decline (mini-fracture) analysis. The current paper aims at resolving that deficiency.