新疆石油地质 ›› 2005, Vol. 26 ›› Issue (6): 612-613.

• 油气勘探 • 上一篇    下一篇

大庆长垣伴生气中二氧化碳含量的变化及原因

王连生1, 郭占谦, 马志红1, 迟东辉, 王璞1, 王树学   

  1. 1.吉林大学 地球科学学院,长春 130061;
    2.中国石油 大庆油田有限责任公司:a.勘探开发研究院,黑龙江 大庆 163712; b.天然气分公司,黑龙江 大庆 163757; c.地质录井分公司,黑龙江 大庆 163411
  • 收稿日期:2005-03-30 出版日期:2005-12-01 发布日期:2020-11-23
  • 作者简介:王连生(1966-),男,黑龙江宝清人,高级工程师,在读博士研究生,石油地质,(Tel)0459-5608320 (E-mail)wls6635@yahoo.com.cn.
  • 基金资助:
    国家自然科学基金资助项目,从松辽盆地储层火山岩和流体包裹体探讨无机成因烃类天然气的来源、成藏和资源量(40372066)资助

The Changing and Origin of the Carbon Dioxide in Associated Gas of Daqing Placanticline

WANG Lian-sheng1, GUO Zhan-qian, MA Zhi-hong1, CHI Dong-hui, WANG Pu-jun1, WANG Shu-xue   

  1. 1. College of Geosciences, Jilin University, Changchun, Jilin 130061, China;
    2. Daqing Oilfield Company Ltd., PetroChina:a.Research Institute of Exploration and Development, Daqing, Heilongjiang 163712, China; b.Nature Gas Co., Daqing, Heilongjiang 163757, China; c.Geological Logging Co., Daqing, Heilongjiang 163411, China
  • Received:2005-03-30 Online:2005-12-01 Published:2020-11-23

摘要: 大庆长垣伴生气中CO2的含量自20世纪90年代开始有较大幅度的增加,2003年伴生气中 CO2的含量(总外输)已达2.87%,与20世纪80年代相比,CO2含量增加了约一个数量级并且还有继续升高的趋势。经过对伴生气中CO2 碳同位素(δ13CCO2)的测定,3个样品的数值均大于+3‰,应属无机成因中含碳酸盐岩石的热变质成因。伴生气中CO2含量的增加可能与新构造运动频繁及地球深部热量上涌有关。

关键词: 大庆长垣, 伴生气, 碳同位素, 成因, 变质

Abstract: The CO2 content in associated gas of Daqing placanticline has increased greatly since the 1990s, reaching the total amount of 2.87%(V/V) in 2003, increasing about ten times compared with that in the 1980s, and the rising trend will be maintained.By determination of the δ13 C of CO2 in associated gas shows that it is bigger than +3‰ for three samples, indicating that the origin of this CO2 is the pyrolysis of carbonate.The reason of the increase of CO2 content is mostly related with frequency of new-tectonic movement and the rising of heat flow from the deep earth.

Key words: Daqing placanticline, associated gas, carbon isotope, origin, metamorphism

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