新疆石油地质 ›› 2008, Vol. 29 ›› Issue (4): 403-410.

• 油气勘探 •    下一篇

塔里木盆地和准噶尔盆地烷烃气碳同位素类型及其意义(为庆祝新疆油田勘探开发研究院成立50周年而作)

戴金星1, 倪云燕1, 李剑2, 胡国艺2, 朱光有1   

  1. 1.中国石油勘探开发研究院, 北京100083;
    2.中国石油勘探开发研究院廊坊分院, 河北廊坊065007
  • 收稿日期:2008-05-14 发布日期:2020-10-09
  • 作者简介:戴金星(1935-), 男, 浙江瑞安人, 中国科学院院士, 地球化学,(Tel)010-62097084(E-mail)djx@petrochina.com.cn.

Carbon Isotope Types and Significances of Alkane Gases from Junggar Basin and Tarim Basin

DAI Jin-xing1, NI Yun-yan1, LI Jian2, HU Guo-yi2, ZHU Guang-you1   

  1. 1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    2. Langfang Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Langfang, Hebei 065007, China
  • Received:2008-05-14 Published:2020-10-09

摘要: 将烷烃气碳同位素划分为正碳同位素系列(是有机成因烷烃气的表征) 、负碳同位素系列(是无机成因烷烃气的表征) 和烷烃气碳同位素倒转(是次生改造气的特征) 等3种类型。塔里木盆地和准噶尔盆地发育着大量正碳同位素系列的原生型煤成气和油型气, 也有大量碳同位素倒转的次生型的有机成因烷烃气, 但无原生型负碳同位素系列无机成因烷烃气, 仅有个别次生改造型负碳同位素系列, 它们是由有机成因烷烃气改造来的。认为烷烃气碳同位素倒转的成因有4种: ①同源不同期气或同型不同源气的混合; ②煤成气和油型气的混合; ③烷烃气中某一或某些组分被细菌氧化; ④有机烷烃气和无机烷烃气的混合。

关键词: 塔里木盆地, 准噶尔盆地, 烷烃气, 碳同位素, 类型

Abstract: The carbon isotope distribution pattern of alkane gases can be divided into three types: normal carbon isotopic distribution characterized by organic genetic alkane gas; negative carbon isotopic distribution characterized by inorganic alkane gas; reversal trend of alkane gas carbon isotope characterized by secondary modified gas. There exist both abundant primary coal-derived gases and oil-type gases in normal carbon isotope distribution and a lot of secondary organic genetic alkane gases in reversal trend of carbon isotope. There is no inorganic genetic alkane gas in primary negative carbon isotope distribution except for individual secondary modified negative carbon isotope derived from organic genetic alkane gases. The carbon isotopic reversal trend has four origins: 1) an admixture of gases from the same source but different stages or from different sources but the same types; 2) an admixture of coal-derived gas and oil-type gas; 3) microbial oxidation of some components of the alkane gases, and 4) an admixture of organic and inorganic alkane gases.

Key words: Tarim basin, Junggar basin, alkane gas, carbon isotope, type

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