Carbon Isotopic Reversal Numerical Simulation of Deep-seated Gases, Songliao Basin
Received date: 2008-05-06
Revised date: 2008-08-05
Online published: 2008-10-10
There are abundant natural gas resources in deep formation in the Songliao basin, but there is also a debate between organic origin and inorganic origin of those hydrocarbons. The carbon isotopic reversal of deep gas in the Songliao basin is an important argument of inorganic views. This paper selects several typical organic and inorganic hydrocarbons and makes a numerical simulation through mixing different types of hydrocarbons with different ratios. The results show that: mixing with different types of organic hydrocarbons doesn’t produce a complete carbon isotopic reversal between methane and its homologues, but this complete reversal will happen in mixture of organic and inorganic hydrocarbons. The numerical simulation indicates that: (1) the reason for the carbon isotopic reversal of deep seated gas in the Songliao basin is that some inorganic gas is mixed; (2) only relying on a complete carbon isotopic reversal between methane and its homologues can’t tell which kind of gas is inorganic.
LIU Ting ;MI Jing-kui ;ZHANG Min . Carbon Isotopic Reversal Numerical Simulation of Deep-seated Gases, Songliao Basin[J]. Natural Gas Geoscience, 2008 , 19(05) : 722 -726 . DOI: 10.11764/j.issn.1672-1926.2008.05.722
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