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

Abstract

Abstract: 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 C₂-C₅ 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 C₂-C₅ gas hydrocarbons range from 43 to 64 kcal/mol and 52 to 72kcal/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.

Key words: Tarim basin, Kuqa depression, kerogen, hydrocarbon, pyrolysis, simulation experiment

CLC Number:

LI Xian-qing, XIAO Xian-ming, TANG Y, MI Jing-kui, XIAO Zhong-yao, SHEN Jia-gui. The Kinetics of Hydrocarbon Generation in Jurassic Coal-Measure Source Rocks,Kuqa Depression, Tarim Basin[J]. Xinjiang Petroleum Geology, 2003, 24(6): 487-489.

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