Geochemical characteristics and assessment of hydrocarbon-generation potential of the Lower Triassic source rock in Baise basin,China

The marine hydrocarbon source rock is generally carbonate rock of isolated platforms and interplatform troughs in the Baise basin.According to the chemical experimental data of residual organic carbon content,kerogen carbon isotope,aliphaltic gas chromatography/mass spectrometry of 67 outcrop specimens in the Baise basin,the authors analyse the geochemical characteristics of the type and the maturation of organic matter in the Lower Triassic-Devonian source rock.Because the surface source rock are high thermal evolution and low residual organic matter abundance,based on correcting the organic matter abundance pyrolysis loss and surface weathering loss,the authors estimate the hydrocarbon-generation intensity of source rock using the Monte Carlo technique.After analyzing the geochemical characteristics and the hydrocarbon-generation intensity of the source rock,the authors consider that the Lower Triassic-Devonian marine source rock has low-middle hydrocarbon-generation potential in the Baise basin.