Geochemistry Study on Gas-source Correlation of Natural Gas

LIU Wen-hui; ZHANG Dian-wei; WANG Xiao-feng; NAN Qing-yun

Gas-source correlation is an important task for natural gas exploration and oil-gas theoretic research. Isotopic geochemistry is an effective means for gas-source contrast, especially carbon and hydrogen isotopes, which have been widely used to trace source rocks, to identify the deposit conditions of parent substance, to calculate the evolution stage of source rocks and the process of reservoirs forming, and to estimate mixed gas. In this paper we summarize some methods, that is, to trace the source rocks of natural gas by using, carbon hydrogen and rare gas isotopic character; to trace gas source by using the mathematic model of methane and evolution stage; to identify the deposit conditions of parent substance and the process of reservoirs forming by using the hydrogen isotopic character of methane; to identify the possible source of deep area by using rare gas isotopic character and to calculate the mixing ratio by using the function of time-accumulation-emotion.

Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, CAS, Lanzhou 730000

Received Date: 2003-12-17

Publish Date: 2004-12-10

Key words:

Abstract: Gas-source correlation is an important task for natural gas exploration and oil-gas theoretic research. Isotopic geochemistry is an effective means for gas-source contrast, especially carbon and hydrogen isotopes, which have been widely used to trace source rocks, to identify the deposit conditions of parent substance, to calculate the evolution stage of source rocks and the process of reservoirs forming, and to estimate mixed gas. In this paper we summarize some methods, that is, to trace the source rocks of natural gas by using, carbon hydrogen and rare gas isotopic character; to trace gas source by using the mathematic model of methane and evolution stage; to identify the deposit conditions of parent substance and the process of reservoirs forming by using the hydrogen isotopic character of methane; to identify the possible source of deep area by using rare gas isotopic character and to calculate the mixing ratio by using the function of time-accumulation-emotion.

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Reference (31)

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Geochemistry Study on Gas-source Correlation of Natural Gas

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