The Kinetics of Hydrocarbon Generation in Jurassic Coal-Measure Source Rocks,Kuqa Depression,Tarim Basin

By using thermal simulation experiment of closed system with gold tube-high pressure kettle,combined with special Ki -netics software,investigation of hydrocarbon generation kinetics of Jurassic coal-measure source rocks in Kuqa depression of Tarim basin is made,obtaining the related kinetic parameters of methane and C 2 -C 5 gas hydrocarbons.The results show that the Juras-sic coal-measure source rocks are of good gas generation potentials and mainly produce methane at the high thermal evolution stage.The activate energy values of methane and C 2 -C 5 gas hydrocarbons range from43to64kcal/mol and52to72kcal/mol,respectively.The kinetics method of hydrocarbon generation allows well to extrapolating lab data to actual geologic process and thus can be widely applied to the assessment and exploration of natural gas.