Pilot Geothermal Power Plant and Scope of Commercial Utilisation of Tatapani Geothermal Field Surguja District, Madhya Pradesh

Abstract

Tatapani geothermal field is located along faulted Gondwana basin margin within trending SONATA Lineament zone in Central India. The Tatapani fault and cross faults in Proterozoic gneissic basement and Gondwana rocks control the thermal activity. This field has 400 x 300 m area of upflow with continuity to depth of geochemically estimated reservoir temperature of thermal gradient of to /m, heat flow of 50 and boiling zone around depth. Steep fractures as feeder zones have been recorded in explored depth of Successful completion of five production wells with cumulative discharge of 30 of and maximum temperature of from shallow thermal zone in depth can sustain up to 300 binary cycle power generation. Heat potential of geofluids from proven shallow thermal zones is of the order of 186 for 20 years. Projection of geothermal parameters to reservoir depth suggests occurrence of conical geothermal body of areal extent of 2 at and 7.2 at 1500 m depth, with capability to sustain commercial development of the order of 3.17 energy from recoverable uids and 18 energy in rocks and water combined for temperature drop of 25?C from 112?C to 87?C.