MODELLING FLUID FLOW IN STRESS SENSITIVE PETROLEUM RESERVOIR CONSIDERING FAULT REACTIVATION PROBLEM

MODELLING FLUID FLOW IN STRESS SENSITIVE PETROLEUM RESERVOIR CONSIDERING FAULT REACTIVATION PROBLEM

Gomes, I. F.; Guimarães, L. J. N.; Pontes, I. D. S.; Costa, L. M.

Full Article:

This paper presents the application, to a synthetic example, of a formulation implemented in a finite element code CODE_BRIGHT to simulate fluid flow in petroleum reservoir sensitive to stress state. In this program the equations of fluid flow problem are solved together with the stress equilibrium equation, which characterize the geomechanical problem. It’s a hydro-geomechanical coupling solved in a totally implicit manner, where changes in pressure field induce changes in stress state of rocks of the field, which can lead to reactivation of sealed geological faults. The fault reactivation problem considers that shear (with dilatancy), tension or compression of filling material may cause changes in hydraulic properties. The mechanical constitutive model adopted to represent the behavior of the filling material of the fault is an elastoplastic Mohr-Coulomb model that is able to reproduce the fault activation through reservoir and adjacent rocks (fluid and pressure propagation).

This paper presents the application, to a synthetic example, of a formulation implemented in a finite element code CODE_BRIGHT to simulate fluid flow in petroleum reservoir sensitive to stress state. In this program the equations of fluid flow problem are solved together with the stress equilibrium equation, which characterize the geomechanical problem. It’s a hydro-geomechanical coupling solved in a totally implicit manner, where changes in pressure field induce changes in stress state of rocks of the field, which can lead to reactivation of sealed geological faults. The fault reactivation problem considers that shear (with dilatancy), tension or compression of filling material may cause changes in hydraulic properties. The mechanical constitutive model adopted to represent the behavior of the filling material of the fault is an elastoplastic Mohr-Coulomb model that is able to reproduce the fault activation through reservoir and adjacent rocks (fluid and pressure propagation).

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DOI: 10.5151/meceng-wccm2012-19562

Referências bibliográficas

• [1] Guimarães L. J. N., I. F. Gomes, J. P. V. Fernandes 2009. Influence Of Mechanical Constitutive Model On The Coupled Hydro-Geomechanical Analysis Of Fault Reactivation. 2009 SPE Reservoir Simulation Symposium. SPE 119168. The Woodlands, Texas, U.S.A.
• [2] Gomes, I. F. 2009. "Implementação Em Elementos Finitos Das Equações De Pressão E Saturação Para Problemas De Fluxo Bifásico Em Reservatorios De Petróleo Deformaveis. Universidade Federal de Pernambuco. Departamento de Engenharaia Civil. Recife. Brasil.
• [3] Rutqvist, J., Birkholzer, J., Cappa, F. Andamp; Tsang, C. -F., 2007. Estimating maximum sustainable injection pressure during geological sequestration of CO2 using coupled fluid flow and geomechanical fault-slip analysis. Energy Conversion and Management, 48, (March). pp. 1798-1807.
• [4] Soltanzadeh, H., Hawkes, C. D., 2008. Semi-analytical models for stress change and fault reactivation induced by reservoir production and injection. Journal of Petroleum Science and Engineering, 60, (May). pp. 71-85.
• [5] Guimarães L. J. N., Gomes I. F., Barbosa, J. A., Almeida, R. P. M. (2010). Numerical modelling of CO2 flow through deformable aquifers with the possibility of fault reactivation. Sixth International Congress on Environmental Geotechnics. New Delhi, India.
• [6] Olivella, S., J. Carrera, A. Gens Andamp; E. E. Alonso. 1994. Nonisothermal Multiphase Flow Of Brine And Gas Through Saline Media. Transport in Porous Media, 15, 271-293.

Como citar:

Gomes, I. F.; Guimarães, L. J. N.; Pontes, I. D. S.; Costa, L. M.; "MODELLING FLUID FLOW IN STRESS SENSITIVE PETROLEUM RESERVOIR CONSIDERING FAULT REACTIVATION PROBLEM", p-3758-3764. In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 23580828, DOI 10.5151/meceng-wccm2012-19562