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Towards 3D Spatio-temporal Pore Pressure Stress Coupling Prediction in ReservoirsNormal access

Authors: J. B. Altmann, B. Müller, M. Tingay, O. Heidbach and T. M. Müller
Event name: 70th EAGE Conference and Exhibition incorporating SPE EUROPEC 2008
Session: CO2 Sequestration/Acid Gas (EAGE/EUROPEC)
Publication date: 09 June 2008
DOI: 10.3997/2214-4609.20147841
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 808.45Kb )
Price: € 20

Geomechanical modelling of a reservoir is important to understand the coupling between pore pressure and stress state in a reservoir. Changes of pore pressure due to injection or depletion implies also a spatio-temporal re-distribution of the stress state. Reservoirs are complex underground storage volumes in which the role of pore pressure stress coupling is not fully understood. To quantify the spatio-temporal evolution of pore pressure stress coupling in complex settings we solve the coupled differential equations of quasi-static poroelasticity with the 3D finite element method. Our modelling results indicate that in the early stage of fluid injection experiments pore pressure stress coupling deviates significantly from a description in the static limit.

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