NUMERICAL MODELING OF A GEOTHERMAL SITE UNDER DEVELOPMENT: A CASE STUDY IN BÜYÜK MENDERES GRABEN

Date

2025-1-31

Author

Yal Önder, Gözde Pınar

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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The purpose of this study is to construct a hydrological and mechanical model that best represents the geothermal reservoir in the study area to determine the effectiveness of mechanical enhancement strategies. The mechanical response of the reservoir to pressurized water injection was assessed by considering the possible activation of natural fractures through shear failure. The impact of the activation of the fractures on fluid flow and reservoir permeability was assessed. In order to determine the parameters required for the model, field study encompassing scan-line surveying, photogrammetric image acquisition from reservoir rock outcrops, fault kinematic analysis, and collection of rock samples to conduct geomechanical tests has been performed. A geologically constrained discrete fracture network along with a hydrological and mechanical model has been generated. It was observed that mechanical enhancement techniques can effectively improve reservoir productivity and/or injectivity in fracture-controlled reservoirs and that, the extent of mechanical failure achievable with standard pumps is limited and highly dependent on the orientation of fractures relative to the principal stress direction.

Subject Keywords

fracture network, Geothermal, Reservoir enhancement

URI

https://hdl.handle.net/11511/113748

Collections

Graduate School of Natural and Applied Sciences, Thesis