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| 百色盆地第三系浅层气成因类型与形成机制 | |
| 引用本文： | 罗毅,朱扬明,薛秀丽,李英涛,姜春燕.百色盆地第三系浅层气成因类型与形成机制[J].广西科学,2003,10(4):286-291. |
| 作者姓名： | 罗毅 朱扬明 薛秀丽 李英涛 姜春燕 |
| 作者单位： | 1. 中石化南方分公司研究院,昆明,650200 2. 浙江大学地球科学系,杭州,310027 3. 中石化胜利油田股份有限公司,山东,东营,257051 |
| 摘 要： | 在分析百色盆地第三系浅层气地球化学特征的基础上，利用天然气的化学组成和稳定碳同位素比值关系对该盆地浅层气的成因类型进行鉴别，同时根据浅层气的赋存状态与空间展布规律，从浅层气的化学组成和碳同位素组成变化特征入手，结合其它地质、地化资料，探讨盆地浅层气的形成机制。认为百色盆地浅层气以烃类气体为主，其中甲烷占优势；甲烷碳同位素组成偏轻，具有生物成因气的碳同位素组成特征。随气藏埋深增加，浅层气中甲烷含量降低，Cz 重烃增多；甲烷碳同位素组成变重；天然气密度升高。盆地浅层气可划分为三种成因类型：生物气、生物气-低熟混合气、油层菌解气。提出盆地具有沉积、成岩过程中的早期成气作用、抬升之后的后期成气作用和晚期复合成藏三种形成机制。 |
| 关 键 词： | 浅层气 地球化学特征 成因类型 形成机制 |
| 收稿时间： | 2003/6/6 0:00:00 |
| 修稿时间： | 2003年6月6日 |
Genetic Type and Formaction Mechanism of Shallow Gas in Baise Basin |
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| Luo Yi,Zhu Yangming,Xue Xiuli,Li Yingtao and Jiang Chunyan.Genetic Type and Formaction Mechanism of Shallow Gas in Baise Basin[J].Guangxi Sciences,2003,10(4):286-291. | |
| Authors: | Luo Yi Zhu Yangming Xue Xiuli Li Yingtao and Jiang Chunyan |
| Institution: | Research Institute of(Oil) Southern China Exploration and Development Company, Sinopec, Kunming, Yunnan, 650200, China,Research Institute of(Oil) Southern China Exploration and Development Company, Sinopec, Kunming, Yunnan, 650200, China,Research Institute of(Oil) Southern China Exploration and Development Company, Sinopec, Kunming, Yunnan, 650200, China,Research Institute of(Oil) Southern China Exploration and Development Company, Sinopec, Kunming, Yunnan, 650200, China and Research Institute of(Oil) Southern China Exploration and Development Company, Sinopec, Kunming, Yunnan, 650200, China |
| Abstract: | Based on studying the geochemical behavior of Tertiary shallow gas in Baise residual Basin,the authors identified the genetic type of shallow gas in this basin and divided it into three genetic type:bacterial gas,mixed genic gas and pyrolyzed gas Meanwhile,according to the existence form and spatial distribution rule,the chemical constituent and carbon isotope change character of shallow gas,combined with the other geology and geochemical datum,we discussed the formaction mechanism of shallow gas in Baise Basin,and expounded three formaction mechanisms: primeval generation of gas,latter generation of gas and last complex formation of gas accumulation |
| Keywords: | shallow gas geochemical behavior genetic type formaction mechanism |
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