| “威远气田的气源以有机成因气为主”——与张虎权等同志再商榷 |
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| 引用本文： | 戴金星.“威远气田的气源以有机成因气为主”——与张虎权等同志再商榷[J].天然气工业,2006,26(2):16-18. |
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| 作者姓名： | 戴金星 |
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| 作者单位： | 中国石油勘探开发研究院 |
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| 摘 要： | 有机成因烷烃气具有以下规律：碳同位素值δ13C1＜δ13C2＜δ13C3＜δ13C4，一般δ13C1＜－30‰；CH4/3He为109～1012。有机成因二氧化碳的δ13CCO2＜－10‰。威远气田天然气的δ13C1值从－31.96‰～－35.7‰，均小于－30‰，δ13C1＜δ13C2，CH4/3He为1.1734×1010～2.8811×1010。其δ13CCO2值从－11.16‰～－15.81‰，均小于－10‰。加之，威远气田烷烃气和二氧化碳占气体组成的主要区间为89.84%～97.16%。因此，威远气田的天然气以有机成因为主。
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| 关 键 词： | 威远气田 天然气 碳同位素 有机成因 二氧化碳 |
| 收稿时间： | 2005-12-31 |
| 修稿时间： | 2005年12月31 |
Re-discussion on Organic Gas Source as the Main Source in Weiyuan Gas Field: Reply |
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| Dai Jinxing.Re-discussion on Organic Gas Source as the Main Source in Weiyuan Gas Field: Reply[J].Natural Gas Industry,2006,26(2):16-18. |
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| Authors: | Dai Jinxing |
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| Affiliation: | Academician of Chinese Academy of Sciences, Research Institute of Petroleum Exploration and Development, PetroChina |
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| Abstract: | Stable carbon isotope sequence of methane and gaseous alkanes from the organic sources shows: δ13C1<δ13C2<δ13C3<δ13C4, generally δ13C1<-30‰，CH4/3He ranging from 109 to 1012, δ13CCO2<-10‰ for organic CO2 gas. The δ13C1 values from Weiyuan gas field are distributed from -31.96‰ to -35.7‰, generally less than -30‰, and δ13C1<δ13C2，CH4/3He rangs between 1.1734×1010 and 2.8811×1010. Natural gases in Weiyuan gas field display δ13CCO2 values from -11.16‰ to -15.81‰, generally less than -10‰. The proportional ranges of gaseous alkanes and CO2 in natural gas compositions from Weiyuan gas field are distributed from 89.84% to 97.16%. Therefore, natural gases in Weiyuan gas field must be mostly derived from organic gas sources. |
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| Keywords: | Weiyuan gas field carbon isotopic composition natural gas organic origin |
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