Analyzing Production-Induced Subsidence using Coupled Displacement Discontinuity and Finite Element Methods
Shunde Yin; Leo Rothenburg; and Maurice B. Dusseault

Source CMES: Computer Modeling in Engineering & Sciences, Vol. 19, No. 2, pp. 111-120, 2007
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Keywords Petroleum reservoir modeling, ground surface subsidence, geomechanics, displacement discontinuity boundary element method, finite element method
Abstract Subsidence problem is of great importance in petroleum engineering and environmental engineering. In this paper, we firstly apply a hybrid Displacement Discontinuity-FEM modeling to this classic problem: the evaluation of subsidence over a compacting oil reservoir. We use displacement discontinuity method to account for the reservoir surrounding area, and finite element methods in the fully coupled simulation of the reservoir itself. This approach greatly reduces the number of degrees of freedom compared to an analyzing fully coupled problem using only a finite element or finite difference discretization.
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