TY - GEN

T1 - Evolution of Hydrodynamical and Stress Fields in Near-Well Zone in Fractured Porous Media

AU - Nazarova, Larisa A.

AU - Nazarov, Leonid A.

PY - 2017

Y1 - 2017

N2 - The authors have developed the geomechanical-geodynamic model of multi-phase fluid flow and deformation in the near-well zone in the fractured porous reservoir based on the concepts of representative equivalent volume and double porosity. The axially symmetrical modeling uses the original numerical-analytical method when the mass transfer equations are solved using the implicit finite difference scheme and the matrix elimination method, whereas the poroelasticity and poroelastoplasticity equations are solved in quadratures. The derived transcendental equation enables determination of the radius R of the irreversible strain zone at any time point. The numerical experiments at different well production regimes have shown that: R grows with an increase in the lateral earth pressure coefficient, Biot parameter and Poisson's ratio (depletion regime); the pressure grows much faster in the fractures than in the blocks (pressure recovery); water saturation of the blocks decreases with time (depletion).

AB - The authors have developed the geomechanical-geodynamic model of multi-phase fluid flow and deformation in the near-well zone in the fractured porous reservoir based on the concepts of representative equivalent volume and double porosity. The axially symmetrical modeling uses the original numerical-analytical method when the mass transfer equations are solved using the implicit finite difference scheme and the matrix elimination method, whereas the poroelasticity and poroelastoplasticity equations are solved in quadratures. The derived transcendental equation enables determination of the radius R of the irreversible strain zone at any time point. The numerical experiments at different well production regimes have shown that: R grows with an increase in the lateral earth pressure coefficient, Biot parameter and Poisson's ratio (depletion regime); the pressure grows much faster in the fractures than in the blocks (pressure recovery); water saturation of the blocks decreases with time (depletion).

UR - http://www.scopus.com/inward/record.url?scp=85026289563&partnerID=8YFLogxK

U2 - 10.1061/9780784480779.035

DO - 10.1061/9780784480779.035

M3 - Conference contribution

AN - SCOPUS:85026289563

SP - 287

EP - 294

BT - Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics

PB - American Society of Civil Engineers (ASCE)

T2 - 6th Biot Conference on Poromechanics, Poromechanics 2017

Y2 - 9 July 2017 through 13 July 2017

ER -