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首页> 外文期刊>International Journal of Greenhouse Gas Control >A screening-level life cycle greenhouse gas analysis of CO2 enhanced oil recovery with CO2 sourced from the Shute Creek natural gas-processing facility
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A screening-level life cycle greenhouse gas analysis of CO2 enhanced oil recovery with CO2 sourced from the Shute Creek natural gas-processing facility

机译：来自Shute Creek天然气加工设施的二氧化碳增强石油回收的筛分级寿命周期气体分析

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This life cycle analysis (LCA) evaluates life cycle greenhouse gas (GHG) emissions associated with a system that produces both natural gas and crude oil. Two systems are defined: System 1, which independently produces natural gas and oil, and System 2, which captures carbon dioxide (CO2) from the natural gas-processing plant and utilizes this captured CO2 for enhanced oil recovery (EOR). The LCA uses customized spreadsheet models with emission factors from peer-reviewed literature and publications of the National Energy Technology Laboratory of the U.S. Department of Energy. The modeling results show that the CO2 EOR scenario using captured CO2 produces both natural gas and oil with lower life cycle GHG emissions than alternative systems producing natural gas and oil independently. Sensitivity analyses show that the model results are most sensitive to the fraction of CO2 captured (or equivalently, the fraction of CO2 vented) at the natural gas-processing facility and the incremental oil recovery factor and net CO2 utilization factor of the EOR operations. The input variable driving the relative difference in life cycle GHG emissions between these two systems is the fraction of CO2 captured at the natural gas-processing facility (i.e., the capture rate). The results of this study highlight the necessity of linking processes in the life cycle modeling, as a change to one process can affect other processes within the coupled energy system comprised of natural gas and oil. In addition, this analysis shows, as prior work has also suggested, that CO2 EOR using captured anthropogenic CO2 provides a viable means for offsetting carbon emissions from oil production and combustion via the associated storage of CO2 that occurs incidentally during this tertiary method of oil recovery.
机译：这一生命周期分析（LCA）评估了与产生天然气和原油的系统相关的生命周期温室气体（GHG）排放。定义了两个系统：系统1，其独立地产生天然气和油的系统2，以及从天然气加工厂捕获二氧化碳（CO2）的系统2，并利用该捕获的二氧化碳以增强油回收（EOR）。 LCA采用自定义电子表格模型，具有来自美国能源部国家能源技术实验室的对同伴的文献和出版物的排放因子。建模结果表明，使用捕获的二氧化碳的CO2 EOR情景产生的天然气和油，寿命周期低于替代系统，而不是独立地生产天然气和油的替代系统。敏感性分析表明，模型结果对天然气加工设施的二氧化碳部分（或等效，二氧化碳排放的二氧化碳排气的分数）和EOR操作的净二氧化碳利用因子的捕获（或等效的馏分）最敏感。输入可变驱动这两个系统之间的生命周期GHG排放的相对差异是在天然气处理设施（即，捕获率）处捕获的CO2的级分。该研究的结果突出了在生命周期建模中连接过程的必要性，因为对一个过程的变化可以影响由天然气和油的耦合能量系统内的其他过程。此外，该分析表明，作为现有的工作还提出，使用捕获的人为CO2的CO2 EOR提供了可行的方法，用于通过偶然的CO2储存和燃烧抵消碳排放的可行性手段，这些二氧化碳储存在此初步的采油方法中偶然发生。 。

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