Application of a matrix-fracture transfer pseudofunction in geothermal reservoir simulation
A fine-grid, single porosity model of a matrix-fracture system was used to visualize the pressure response and mass transfer mechanisms in a vapor-dominated geothermal reservoir. The observed pressure response and saturation distributions were used to generate a pseudofunction representing the product of vapor phase relative permeability and matrix-fracture transfer shape factor for a dual-porosity model. The pseudofunction was found to be a function of vapor saturation. It was used in place of the gas relative permeability curve. With the application of the pseudofunction, the dual-porosity model produced pressure decline trends similar to those observed in the fine-grid models. The pseudofunction approach was successfully applied in the history matching of a single Geysers producing well. The TETRAD simulation code was used in this study.
- Research Organization:
- Stanford University, Stanford, CA; Pacific Gas and Electric, Santa Rosa, CA
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 888673
- Report Number(s):
- SGP-TR-141-20; TRN: US200619%%140
- Resource Relation:
- Conference: Seventeenth Workshop on Geothermal Reservoir Engineering: Proceedings, Stanford University, Stanford, CA, January 29-31, 1992
- Country of Publication:
- United States
- Language:
- English
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