Life in the slow lane; biogeochemistry of biodegraded petroleum containing reservoirs and implications for energy recovery and carbon management.
Life in the slow lane; biogeochemistry of biodegraded petroleum containing reservoirs and implications for energy recovery and carbon management.
复制标题
DOI：
10.3389/fmicb.2014.00566
复制
发表时间：
2014
影响因子：
5.2
通讯作者：
Larter SR
中科院分区：
文献类型：
--
作者：
Head IM;Gray ND;Larter SR
在过去的十年里，我们对重油形成过程的理解已经发生了变化。这一过程曾被认为是由大气降水输送到深层油藏的氧气驱动的。这一范式已被一种观点所取代，即该过程是厌氧的，经常与产甲烷烃降解有关。储层热历史对生物降解石油的发生具有根本性的控制作用，而微生物活动集中在油水过渡带的油柱底部，这是油气储层生物群落中的热点。在这里，我们提出了一个新的和现有的微生物，地球化学和生物地球化学数据的综合，扩大了我们的看法，调节石油储层生态系统中的深层生命的过程，并强调了一系列生物和非生物因素的相互作用，决定石油是否可能被生物降解原位，石油勘探和生产的重要后果。提出了成藏沃茨的矿化度对生物降解稠油油藏的形成起关键控制作用，并引入了古蚀变的概念。我们还评估了温度和盐度之间的相互作用，以解释在温度未达到古巴氏作用所需的80-90°C的储层中出现非降解油的原因。此外，我们评估了几个假设，可能会解释发生的生物体通常被认为是好氧的，在名义上缺氧的石油储层栖息地。最后，我们讨论了微生物过程在能源回收中的作用，因为我们从化石燃料依赖过渡，以及这些如何适应能源未来更广泛的社会经济格局。
Our understanding of the processes underlying the formation of heavy oil has been transformed in the last decade. The process was once thought to be driven by oxygen delivered to deep petroleum reservoirs by meteoric water. This paradigm has been replaced by a view that the process is anaerobic and frequently associated with methanogenic hydrocarbon degradation. The thermal history of a reservoir exerts a fundamental control on the occurrence of biodegraded petroleum, and microbial activity is focused at the base of the oil column in the oil water transition zone, that represents a hotspot in the petroleum reservoir biome. Here we present a synthesis of new and existing microbiological, geochemical, and biogeochemical data that expands our view of the processes that regulate deep life in petroleum reservoir ecosystems and highlights interactions of a range of biotic and abiotic factors that determine whether petroleum is likely to be biodegraded in situ, with important consequences for oil exploration and production. Specifically we propose that the salinity of reservoir formation waters exerts a key control on the occurrence of biodegraded heavy oil reservoirs and introduce the concept of palaeopickling. We also evaluate the interaction between temperature and salinity to explain the occurrence of non-degraded oil in reservoirs where the temperature has not reached the 80–90°C required for palaeopasteurization. In addition we evaluate several hypotheses that might explain the occurrence of organisms conventionally considered to be aerobic, in nominally anoxic petroleum reservoir habitats. Finally we discuss the role of microbial processes for energy recovery as we make the transition from fossil fuel reliance, and how these fit within the broader socioeconomic landscape of energy futures.
登录
查看更多内容
影响因子：
4.4
作者：
Beller, HR;Edwards, EA
通讯作者：
Edwards, EA
影响因子：
2.3
作者：
Agrawal, Akhil;Vanbroekhoven, Karolien;Lal, Banwari
通讯作者：
Lal, Banwari
影响因子：
1.4
作者：
Adams, JJ;Rostron, BJ;Mendoza, CA
通讯作者：
Mendoza, CA
影响因子：
5.2
作者：
Berdugo-Clavijo C;Gieg LM
通讯作者：
Gieg LM
影响因子：
5
作者：
ALLER, RC;RUDE, PD
通讯作者：
RUDE, PD