quotDetection and Assessment of Gas Hydrates in Mahanadi Offshore Eastern margin of Indiaquot

Abstract

quotWith the growing demand for energy, unconventional resources such as gas newlinehydrates have become very important. Hence, studies for the distribution and newlinequantification of gas hydrates along the world s continental margins and newlinepermafrost regions have gained prominence. The present thesis deals with the newlinedelineation and appraisal of gas hydrates and free gas in the Mahanadi Offshore, newlineEastern Margin of India. Gas hydrates occur in shallow sediments where newlinepressure is high; temperature is low; and methane concentration is sufficient. In newlinethe Indian scenario, gas hydrates are found along the continental margins. newlineGas hydrates are mainly found out by establishing an anomalous reflector, newlineknown as the Bottom Simulating Reflector (BSR) on seismic section. The BSR newlineis a physical boundary between high-velocity gas hydrates bearing sediments newlineabove and low-velocity free gas-bearing or water-saturated sediments below, newlineand often associated with the base of gas hydrates stability zone.quot newline newline