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Process Based Life-Cycle Assessment of Natural Gas from the Marcellus Shale

机译：基于过程的马塞勒斯页岩天然气生命周期评估

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摘要

The Marcellus Shale (MS) represents a large potential source of energy in the form of tightly trapped natural gas (NG). Producing this NG requires the use of energy and water, and has varying environmental impacts, including greenhouse gases. One well-established tool for quantifying these impacts is life-cycle assessment (LCA). This study collected information from current operating companies to perform a process LCA of production for MS NG in three areas-greenhouse gas (GHG) emissions, energy consumption, and water consumption-under both present (2011-2012) and past (2007-2010) operating practices. Energy return on investment (EROI) was also calculated. Information was collected from current well development operators and public databases, and combined with process LCA data to calculate per-well and per-MJ delivered impacts, and with literature data on combustion for calculation of impacts on a per-kWh basis during electricity generation. Results show that GHG emissions through combustion are similar to conventional natural gas, with an EROI of 12:1 (90% confidence interval of 4:1-13:1), lower than conventional fossil fuels but higher than unconventional oil sources.
机译：Marcellus页岩（MS）以紧密捕集的天然气（NG）的形式代表着巨大的潜在能源。产生这种天然气需要消耗能源和水，并且对环境的影响各不相同，包括温室气体。一种用于量化这些影响的完善工具是生命周期评估（LCA）。这项研究收集了当前运营公司的信息，以在当前（2011-2012年）和过去（2007-2010年）三个领域（温室气体（GHG）排放，能源消耗和水消耗）进行MS NG生产过程LCA ）操作规范。还计算了能源投资回报率（EROI）。信息是从当前的井开发运营商和公共数据库中收集的，并与过程LCA数据相结合以计算每口井和每MJ输送的影响，并与燃烧的文献数据相结合来计算发电期间每千瓦时的影响。结果表明，燃烧产生的温室气体排放与常规天然气相似，EROI为12：1（90％置信区间为4：1-13：1），低于常规化石燃料，但高于非常规石油源。

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  • 来源
    《Environmental Science & Technology》 |2013年第10期|5459-5466|共8页
  • 作者

    Alexander T. Dale; Vikas Khanna; Radisav D. Vidic; Melissa M. Bilec;

  • 作者单位

    Department of Civil & Environmental Engineering, University of Pittsburgh, 742 Benedum Hall, 3700 O'Hara Street, Pittsburgh, Pennsylvania 15261, United States;

    Department of Civil & Environmental Engineering, University of Pittsburgh, 742 Benedum Hall, 3700 O'Hara Street, Pittsburgh, Pennsylvania 15261, United States;

    Department of Civil & Environmental Engineering, University of Pittsburgh, 742 Benedum Hall, 3700 O'Hara Street, Pittsburgh, Pennsylvania 15261, United States;

    Department of Civil & Environmental Engineering, University of Pittsburgh, 742 Benedum Hall, 3700 O'Hara Street, Pittsburgh, Pennsylvania 15261, United States;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
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