Study on kinetics of hydrocarbon generation from Cenozoic Coal Measures of Xihu Depression

In order to investigate the hydrocarbon generation potential and evolution of Pinghu Formation,coal,carbonaceous shale anddark mudstone samples each t WO were preferred to apply thermal simulation experiment and kinetics calculation,and two wells hydrocarbongeneration history were simulated. The results demonstrated t hat the activation energy of coal and carbonaceous mudstone distribution waswithin 20 kJ 1 mol,and reflecting a rapid hydrocarbon generation. the activation energy of dark mudstone distribution was within 20 kJ 1 mol,and reflecting a longer hydrocarbon generation. The organic material from dark mudstone reached oil and gas threshold in 37 Ma,while coaland carbonaceous shale reached oil and gas threshold in 30 Ma. Additionally gas peak was in the last 10 Ma. Finally,the second hydrocar-bon-generation wa s present in thermal evolution of hydrocarbon. The coal measures in Xihu Depression have large hydrocarbon potential.