Thermal Evolution and Effectivity of Source Rocks of the Lower-Paleozoic in Lower Yangtze Region

ZENG  Ping

doi:10.11764/j.issn.1672-1926.2010.01.54

Natural Gas Geoscience >

2010 , Vol. 21 >Issue 1: 54 - 61

DOI: https://doi.org/10.11764/j.issn.1672-1926.2010.01.54

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Thermal Evolution and Effectivity of Source Rocks of the Lower-Paleozoic in Lower Yangtze Region

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Geological Research Institute of Exploration, Southern Company of SINOPEC,Chengdu 610041, China

Received date: 2009-05-27

Revised date: 2009-09-16

Online published: 2010-02-10

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Abstract

Lower Yangtze Region is one of the marine facies regions which present petroleum exploration prospects in southern China. Using new exploration information and technology methods, we analysed the tectonic-thermal evolution of source rocks of the lower-Paleozoic by field and experimental methods. Results show that obduction and napper were main tectonic movements in late Indosinian-early Yanshan period of Lower Yangtze Region, and most areas were elevated and denudated. Source rocks of lower-Paleozoic in some areas did not deep bury renewedly, and remain the Indosinian thermal evolution state. Therefore the high maturity sapropelic organic matter of lower-Paleozoic has still possessed hydrocarbon generation potential. So it is possible to find layers and areas with hydrocarbon potential, of which source rocks have relative lower thermal evolution, in lower-Paleozoic Lower Yangtze Region.

Key words： Lower Yangtze Region; Lower-Paleozoic; Tectonic-thermal evolution; Source rocks; Effectivity

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ZENG Ping . Thermal Evolution and Effectivity of Source Rocks of the Lower-Paleozoic in Lower Yangtze Region[J]. Natural Gas Geoscience, 2010 , 21(1) : 54 -61 . DOI: 10.11764/j.issn.1672-1926.2010.01.54

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