石油与天然气地质 ›› 2001, Vol. 22 ›› Issue (2): 100-101,118.doi: 10.11743/ogg20010202

• 前沿探索 • 上一篇    下一篇

塔里木盆地海相腐泥型天然气的成因判识

陈世加1, 马力宇2, 付晓文1, 林峰1, 罗玉宏3   

  1. 1. 西南石油学院, 四川南充037001;
    2. 青海石油勘探开发研究院, 甘肃敦煌736302;
    3. 川中油气勘探开发研究所, 四川遂宁629001
  • 收稿日期:2000-03-09 出版日期:2001-06-25 发布日期:2012-01-16
  • 基金资助:

    西南石油学院油气藏地质与工程国家重点实验室资助(PLN99005)

GENETIC DISCRIMINATION OF MARINE SAPROPELIC TYPE GAS IN TARIM BASIN

Chen Shijia1, Ma Liyu2, Fu Xiaowen Lin Feng1, Luo Yuhong1   

  1. 1. Southwest Petroleum Institute, Nanchong, Sichuan;
    2. Qinghai Institute of Petroleum Exploration and Develapment, Dunhuang, Gansu;
    3. Chuanzhong Petroleum Company, Suining, Sichuan
  • Received:2000-03-09 Online:2001-06-25 Published:2012-01-16

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摘要：

腐泥型天然气既可来自腐泥型于酪根的裂解,也可以来自腐泥型原油的裂解.于酪根直接裂解形成的天然气的C2/C3比值基本不变,原油裂解的天然气逐渐增大,乙烷和丙烷的碳同位素差（δ13C2-δ13C3）表现出与上述比值相反的变化规律.据此判断,塔北地区吉拉克、桑塔木、解放渠的天然气来自腐泥型于酪根的裂解,而轮南地区、英买力地区的天然气来自原油的裂解.

关键词: 天然气, 干酪根裂解, 原油裂解, 塔里木

Abstract:

Sapropelic gas could be derived from the cracking of both sapropelic kerogen and sapropelic crude oil. The differences between these two different kinds of genetic gases are: 1 the value of C2/C3 of the gas derived fron kerogen remains constant while that of the gas derived from crude oil increases gradually; the difference of carbon isotope of (δ13C2-δ13 C3) is opposite to the above memtioned values. It is considered that the gas in Jilak, Sangtamu and Jiefangqu regions in North Tarim Basin is derived from sapropelic kerogen while the gas in Lunnan, Yinmali regions is derived from crude oil.

Key words: natural gas, kerogen cracking, crude cracking, Tarim

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