| Abstract Submission No. | ABS-2.4-0153 |
| Title of Abstract | Geothermal Reservoir Characterization and Resource Management Using Geomechanical Modelling in Central India Geothermal Region |
| Authors | Saikat Dey*, Saumen Maiti, Saurabh Datta Gupta |
| Organisation | IIT(ISM) Dhanbad |
| Address | 5 No BT College More, P.O- Banipur, P.S- Habra Habra, West Bengal, India Pincode: 743233 E-mail: saikatdeymail18@gmail.com |
| Country | India |
| Presentation | Poster |
| Abstract | Reservoir geomechanics model is very crucial to provide valuable information associated with multiple applications including the prediction of surface subsidence, pore pressure estimation, observation of in-situ stress variability, wellbore stability and fault reactivation mechanism. This study is mainly focused on the 3D static geomechanical model building towards potential reservoir characterization and resource management in a vital geothermal province situated in Central India. The preliminary step of the workflow is to build 1D geomechanical and petrophysical model by integrating available log data and related mathematical expression. For proper optimization of the model in high temperature and high pressurized geothermal environment seismic data is also applied with the initial 1D model for generating fault polygons and horizon grids. The geomechanical model generated using geostatistical simulation technique consists of the structural and stratigraphy interpretation of the reservoir, 3D grid, well log data, rock strength, fluid-rock interaction in reservoir, elastic property and in-situ stress estimation. Fault stability analysis is done by using Mohr-Coulomb failure criteria to know about the possibility of fault activation under extreme stress conditions. The model indicates a stress regime of maximum horizontal stress around 70-72 MPa and minimum horizontal stress around 37-40 MPa and a strike-slip to normal faulting regime is also identified. This work gives insight into optimizing drilling strategies, reducing geomechanical failure probability and enhancing reservoir management techniques which can ensure sustainability in geothermal energy production. Moreover, this study provides a reliable framework for a safe and efficient geothermal resource management which is supportive to fulfill the agenda of energy transition. This research also contributes to reducing global dependence on fossil fuels by strengthening the role of geothermal system in renewable energy sector by lowering carbon emissions. |
| Keywords | Geomechanical and Geostatistical Model, Pore Pressure, In-Situ stress, Mohr- Coulomb Failure Criteria, Geothermal Energy |