Modeling pressure-transient behavior of sectionally homogeneous reservoirs by the boundary-element method
- Stanford Univ., CA (United States)
Pressure-transient solution in a piecewise homogeneous reservoir with arbitrary geometry of each region is proposed by the Laplace domain boundary-element method (BEM). Any number of such regions with different rock and fluid properties can be included in the solution procedure. This formulation can solve for impermeable barriers of any shape, size, and orientation, including large pressure-support sources (aquifers) and fluid-injection problems that show composite behavior. Any number of line-source wells can be included. Example solutions are verified against known analytical solutions. Injection-fluid-front velocity is calculated as part of the solution; thus, the fluid fronts can be tracked in a quasistationary sense. The analytical aspects of this procedure are discussed. BEM solutions are accurate because the method retains the free-space Green's function of the governing differential operator as a global weighting function in the integral equation.
- OSTI ID:
- 6316235
- Journal Information:
- SPE Formation Evaluation (Society of Petroleum Engineers); (United States), Journal Name: SPE Formation Evaluation (Society of Petroleum Engineers); (United States) Journal Issue: 02 Vol. 8:2; ISSN 0885-923X; ISSN SFEVEG
- Country of Publication:
- United States
- Language:
- English
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BOUNDARY CONDITIONS
FLOW MODELS
GEOLOGIC DEPOSITS
INJECTION WELLS
MATHEMATICAL MODELS
MINERAL RESOURCES
MOVING-BOUNDARY CONDITIONS
NATURAL GAS DEPOSITS
NATURAL GAS WELLS
OIL WELLS
PERFORMANCE
PERMEABILITY
PETROLEUM DEPOSITS
POROSITY
PRESSURE GRADIENTS
PRODUCTIVITY
RESERVOIR PRESSURE
RESERVOIR ROCK
RESOURCES
WELLS