Interpretation peculiarities of injection wells hydrodynamic research using pressure draw-down curve method of low-permeable reservoir with autonomous and non-autonomous hydraulic fracturing

Abstract

Nowadays, the majority of oil and gas companies’ fields have commercial oil reserves and need efficient methods of developing hard-to-recover oil reserves. The basic criteria for reserves to become hard-to-recover ones are low reservoir permeability (about 40%), low productivity and high oil viscosity. The practical value of this work is the contribution to hydrodynamic studies of wells in low-permeability reservoirs by detecting unstable autonomous hydraulic fracturing, implementation of an approach to predict reservoir pressure in the absence of radial filtration, as well as determination of the optimal study time.