Application ID: 491
Fluids that move through pore spaces in an aquifer or reservoir can shield the porous medium from stress because they bear part of the load from, for instance, overlying rocks, sediments, fluids, and buildings. Withdrawing fluids from the pore space increases the stress the solids bear, sometimes to the degree that the reservoir measurably compacts. The reduction in the pore space loops back and alters the fluid pressures. The feedback brings about more fluid movement, and the cycle continues. Terzaghi Compaction describes a conventional flow model and uses the results to calculate vertical compaction following Terzaghi theory.
This model solves a conventional saturated fluid flow problem for change in hydraulic head and utilizes the results to assess the vertical compaction of sediments. The COMSOL Multiphysics solution is compared to published results. This example is modified in the Biot Poroelasticity model to analyze two-way coupled fluid flow and solid deformation.
This model example illustrates applications of this type that would nominally be built using the following products:Subsurface Flow Module
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.