| Title | Geochemical Analysis for Understanding Prospectivity of Low Enthalpy Geothermal Reservoirs of Dholera |
|---|---|
| Authors | Manan SHAH, Prakhar SARKAR, Darshan SHARMA, Shivani GARG, Yatharth SHUKLA, Trisha MISHRA, Anirbid SIRCAR, Shreya SAHAJPAL, |
| Year | 2017 |
| Conference | Stanford Geothermal Workshop |
| Keywords | low enthalpy, geothermometry, Dholera, India |
| Abstract | Geochemical Methods are crucial methods applied during various stages of exploration and exploitation to evaluate reservoir characteristics. It is used concurrently with geological and hydro-geological appraisals to supplement available information regarding the prospectivity of potential region of investigation at relatively low costs compared to geophysical methods or drilling. Dholera is an ancient port city which has historically been associated with natural thermal springs and wells with hot water flowing at appreciably high temperatures. Studies from pre-existing wells and surveys have suggested the presence of a sizable low enthalpy geothermal resource base. Geochemical methods are applied to waters, gases, and secondary minerals. One of the most prominent use of geochemical sampling is the determination of subsurface temperatures using Geothermometry. In this study commonly accepted concepts of Ionic and Silica Geothermometry are applied to understand conditions in the reservoir. Care has been taken to undertake tests while preserving native conditions by preserving sample using accepted standards. This paper seeks to present an interpretation on the results obtained as well as a give an outlook of the resource in place waiting to be utilized in this region. Interpretation of the data has given us some input on the Reservoir characteristics like: Reservoir Temperature, Type of reservoir rock, mixing process, multiple fluid origin and elevation of the basin. |