川东北及川东区天然气成因类型探讨

刘光祥; 陶静源; 潘文蕾; 吕俊祥

doi:10.11781/sysydz200206512

川东北及川东区天然气成因类型探讨

doi: 10.11781/sysydz200206512

1.
中国石化勘探开发研究院无锡实验地质研究所, 江苏无锡 214151
2. 武汉市东西湖教校, 湖北武汉 430040

基金项目: 中国石化集团公司重点科技攻关项目(P00040).

详细信息

作者简介:
刘光祥(1969- ),男(土家族),硕士、高级工程师,主要从事油气地质与勘探的研究工作.

中图分类号: TE122.1
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- 被引次数: 0
出版历程
- 收稿日期: 2001-12-25
- 修回日期: 2002-08-20
- 刊出日期: 2002-11-25

GENETIC TYPES OF THE NATURAL GAS IN THE NORTHEAST AND THE EAST OF SICHUAN BASIN

1.
Wuxi Research Institute of Experimental Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China
2. West east lake TV University, Wuhan, Hubei 430040, China

摘要

摘要: 通过对川东北、川东区11口钻井天然气组分及其烷烃碳同位素的研究表明,两区天然气成因类型明显有别,川东北天然气为过成熟裂解混源气,其中,Ⅱ—Ⅲ₁类型母质烃源岩的贡献可能大于Ⅰ₁—Ⅰ₂类型母质烃源岩的贡献;川东区建南气田长兴、飞三、嘉一产层天然气多属Ⅰ₁—Ⅰ₂类型母质烃源岩过成熟裂解混源气;个别天然气表现为煤型气与油型气的混源气,腐泥型有机质的贡献可能大于腐殖型有机质的贡献;石炭系产层天然气可能为志留系所生原油的二次裂解气。
- 成因类型 /
- 天然气 /
- 碳同位素 /
- 川东北区 /
- 川东区
Abstract: Based on study of the component and its carbon isotope of natural gas samples from the Northeast and the East of Sichuan Basin,the genetic types of the natural gas in different regions are different.Natural gas in the Northeast was mainly derived from the over matured source rocks with type Ⅱ-Ⅲ₁ kerogen;besides,it is supposed that type Ⅱ-Ⅲ₁ organic matter makes more contribution than that of type Ⅰ₁-Ⅰ₂ type kerogen in this region.However,natural gas samples from Jiannan gas field(Upper Permian and Lower Triassic)showed that they were mainly generated by over matured source rocks with kerogen typesⅠ₁-Ⅰ₂ and part of gas showed characteristic of sapropelinite and humic organic matter origin.Furthermore,natural gas in Carboniferous pool was from the secondary cracking of oil derived from Silurian source rocks.
- Sichuan Basin /
- natural gas /
- genetic type /
- carbon isotopic /
- evolution

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参考文献(8)

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