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

Авторы: Nazarova L.A.   (ИНГГ СО РАН)   Nazarov L.A.   (ИНГГ СО РАН)  
дата публикации: 2017
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).
первоисточник: Poromechanics 2017: Proceedings of the 6th Biot Conference on Poromechanics (Paris, France, July 9-13, 2017)
страницы: 287-294
ISBN: 9780784480779
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