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首页> 外文期刊>Environmental Science & Technology >Statistically Enhanced Model of In Situ Oil Sands Extraction Operations: An Evaluation of Variability in Greenhouse Gas Emissions
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Statistically Enhanced Model of In Situ Oil Sands Extraction Operations: An Evaluation of Variability in Greenhouse Gas Emissions

机译：统计增强的原位油砂提取操作模型：温室气体排放变化的评估

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摘要

Greenhouse gas (GHG) emissions associated with extraction of bitumen from oil sands can vary from project to project and over time. However, the nature and magnitude of this variability have yet to be incorporated into life cycle studies. We present a statistically enhanced life cycle based model (GHOST-SE) for assessing variability of GHG emissions associated with the extraction of bitumen using in situ techniques in Alberta, Canada. It employs publicly available, company-reported operating data, facilitating assessment of inter- and intraproject variability as well as the time evolution of GHG emissions from commercial in situ oil sands projects. We estimate the median GHG emissions associated with bitumen production via cyclic steam stimulation (CSS) to be 77 kg CO_(2)eq/bbl bitumen (80% CI: 61–109 kg CO_(2)eq/bbl), and via steam assisted gravity drainage (SAGD) to be 68 kg CO_(2)eq/bbl bitumen (80% CI: 49–102 kg CO_(2)eq/bbl). We also show that the median emissions intensity of Alberta’s CSS and SAGD projects have been relatively stable from 2000 to 2013, despite greater than 6-fold growth in production. Variability between projects is the single largest source of variability (driven in part by reservoir characteristics) but intraproject variability (e.g., startups, interruptions), is also important and must be considered in order to inform research or policy priorities.
机译：从油砂中提取沥青所产生的温室气体（GHG）排放随项目和项目的不同而不同。但是，这种可变性的性质和程度尚未纳入生命周期研究中。我们在加拿大艾伯塔省提供了一种基于统计数据的生命周期增强模型（GHOST-SE），用于评估与沥青提取相关的温室气体排放变化。它使用公司提供的公开报告的运营数据，有助于评估项目间和项目内的可变性以及商业现场油砂项目的温室气体排放随时间变化。我们估计，通过循环蒸汽刺激（CSS）与沥青生产相关的温室气体排放中位数为77 kg CO_（2）eq / bbl沥青（80％CI：61–109 kg CO_（2）eq / bbl）和通过蒸汽辅助重力排水（SAGD）为68 kg CO_（2）eq / bbl沥青（80％CI：49–102 kg CO_（2）eq / bbl）。我们还显示，尽管产量增长了6倍以上，但从2000年到2013年，艾伯塔省CSS和SAGD项目的平均排放强度一直相对稳定。项目之间的可变性是最大的可变性来源（部分由储层特征驱动），但项目内部的可变性（例如启动，中断）也很重要，必须考虑以告知研究或政策重点。

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  • 来源
    《Environmental Science & Technology》 |2018年第3期|947-954|共8页
  • 作者

    Andrea Orellana; Ian J. Laurenzi; Heather L. MacLean; Joule A. Bergerson;

  • 作者单位

    Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada;

    ExxonMobil Research and Engineering Company, 1545 Route 22 East, Annandale, New Jersey 08801-3059, United States;

    Departments of Civil Engineering, Chemical Engineering and Applied Chemistry, School of Public Policy and Governance, University of Toronto, Toronto, Ontario Canada M5S 1A4;

    Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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