Geothermal Scope in Bangladesh

Abstract

With only 510 kWh per capita of electricity generation, Bangladesh is one of the world's energy-affected countries and only 94 percent of its population has access to that electricity. Bangladesh is still very early in the sense of geothermal water use. To date, there has been no systematic study to assess Bangladesh's geothermal potential. However, authors in a few articles have highlighted the potential of Bangladesh's geothermal energy resources. Exploration of geothermal energy involves early exploration cash incentives, Yet good planning reduces risks and saves money. Many deep abandoned wells were used in Bangladesh, initially drilled for oil and gas exploration, to collect valuable information on the underground geology and temperature of interesting areas. Analysis of the temperature data for these wells shows that the average geothermal gradient along the south-eastern part of Bengal Foredeep varies from 19.8 ° C to 29.5 ° C / km and from 20.8 ° C to 48.7 ° C / km along the stable north-western shelf. An attempt was made to recalculate different temperatures of the geothermometer using the geochemical data from water samples from the basement aquifer of the Madhyapara hard rock mine region and using the knowledge gained from this training program. The predicted temperature ranges from 67 to 153 ° C, which can relate to a potential low-temperature geothermal field in the region of Madhyapara. After geophysical investigations (resistivity (MT), seismic, gravity, etc.) preliminary geological and geochemical surface studies are recommended, Drilling of shallow gradient wells to create a conceptual model of any geothermal system before continuing with the most expensive and hazardous part, i.e. deep well drilling.