原油的生物降解通过地下石油储库中的甲基化
D M Jones1, I M Head, N D Gray
1School of Civil Engineering and Geosciences, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK.
Nature
|December 14, 2007
概括
原油在水库中的生物降解主要是由无氧细菌引起的,而不是有氧细菌. 这一过程产生甲,为从退化油田中回收能源提供了潜在的潜力.
科学领域:
- 地质化学 地质化学
- 微生物学 微生物学
- 石油工程是石油工程中的一个.
背景情况:
- 原油在地下水库中的生物降解增加了回收和炼油成本.
- 以前认为有氧生物降解占主导地位,但无氧过程现在被认为在地下环境中更为普遍.
研究的目的:
- 阐明油库中碳化合物降解的机制.
- 调查无氧生物降解在改变石油成分和产生气体方面的作用.
主要方法:
- 实验室微观宇宙实验监测碳化合物组成和产生的气体.
- 分析气体和石油样本的碳同位素组成.
- 雷利同位素分离盒模型的应用.
主要成果:
- 在甲性条件下的实验室生物降解复制了在水库中观察到的碳化合物类别的顺序去除.
- 优先去除n-基,主要通过性甲生成产生甲.
- 观察到碳化合物变化的一致模式和干气与生物降解油的关联.
结论:
- 一种常见的甲原生物降解机制可能驱动地下油库中的碳化合物变化.
- 这一过程解释了观察到的石油降解和干气生产模式.
- 加快自然甲原生物降解可能使经济能从退化油田中回收能源.
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