Received date: 2003-01-16
Revised date: 2003-01-27
Online published: 2003-02-20
Natural gas geochemistry study has become an important basic work in the exploitation of natural gas. Because of the mixing of gas sources and the multiformity in the natural gases chemical composition and isotopic composition, the forming process of gas pool is very complex. It is important that take accurate geochemistry analysis data in natural gas geochemistry study. Natural gases formed by different types and different evolvement stage of source rocks have different chemical composition and isotopic characteristics. According to these, we can confirm the forming type of natural gases. After these, using the relation between natural gas carbon isotope and Ro, we can make sure the maturity ofnatural gas. There are many reasons making the variety of the carbon isotope series. Being an assistant index to judge the natural gas resource, noble gas can distinguish whether natural gas mixed by deep gas or not. When it is made sure that the natural gas has been mixed by deep gas, the 40Ar/36Ar value is used to estimate the age of source rock. When applying these geochemistry indexes to explain the forming characteristics of natural gases, we must combine the geological background.
LIU Wen-hui, LIU Quan-you, XU Yong-chang, ZHANG Dian-wei . THE GAINING AND APPLYING OF DATA IN NATURAL GAS GEOCHEMISTRY STUDY[J]. Natural Gas Geoscience, 2003 , 14(1) : 21 -29 . DOI: 10.11764/j.issn.1672-1926.2003.01.21
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