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首页> 外文期刊>Environmental Science & Technology >Organic Chemical Characterization and Mass Balance of a Hydraulically Fractured Well: From Fracturing Fluid to Produced Water over 405 Days
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Organic Chemical Characterization and Mass Balance of a Hydraulically Fractured Well: From Fracturing Fluid to Produced Water over 405 Days

机译：水力压裂井的有机化学特征和质量平衡：从压裂液到生产水历时405天

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摘要

A long-term field study (405 days) of a hydraulically fractured well from the Niobrara Formation in the Denver-Julesburg Basin was completed Characterization of organic chemicals used in hydraulic fracturing and their changes through time, from the preinjected fracturing fluid to the produced water, was conducted. The characterization consisted of a mass balance by dissolved organic carbon (DOC), volatile organic analysis by gas chromatography/mass spectrometry, and nonvolatile organic analysis by liquid chromatography/mass spectrometry. DOC decreased from 1500 mg/L in initial flowback to 200 mg/L in the final produced water. Only ~11% of the injected DOC returned by the end of the study, with this 1196 representing a maximum fraction returned since the formation itself contributes DOC. Furthermore, the majority of returning DOC was of the hydrophilic fraction (60—8596). Volatile organic compound analysis revealed substantial concentrations of individual BTEX compounds (0.1—11 mg/L) over the 405-day study. Nonvolatile organic compounds identified were polyethylene glycols (PEGs), polypropylene glycols (PPG), linear alkyl-ethozylates, and triisopropanolamine (TTPA). The distribution of PEGs, PPGs, and TIPA and their ubiquitous presence in our samples and the literature illustrate their potential as organic tracers for treatment operations or in the event of an environmental spill.
机译：完成了对丹佛-祖勒斯堡盆地Niobrara组水力压裂井的长期现场研究（405天），表征了水力压裂中使用的有机化学品及其随时间的变化，从预注入压裂液到采出水。进行。表征包括通过溶解有机碳（DOC）的质量平衡，通过气相色谱/质谱的挥发性有机分析和通过液相色谱/质谱的非挥发性有机分析。 DOC从最初回流的1500 mg / L降低到最终产出水中的200 mg / L。到研究结束时，只有约11％的注入DOC返回了，这1196代表了返回的最大分数，因为地层本身贡献了DOC。此外，返回的DOC大部分是亲水级分（60-8596）。挥发性有机化合物分析显示，在405天的研究中，各个BTEX化合物的浓度较高（0.1-11 mg / L）。鉴定出的非挥发性有机化合物为聚乙二醇（PEG），聚丙二醇（PPG），直链烷基乙氧基化物和三异丙醇胺（TTPA）。 PEG，PPG和TIPA的分布以及它们在我们样品中的普遍存在以及文献表明，它们有可能作为有机示踪剂用于处理操作或发生环境泄漏事件。

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  • 来源
    《Environmental Science & Technology》 |2017年第23期|14006-14015|共10页
  • 作者

    James Rosenblum; E. Michael Thurman; Imma Ferrer; George Aiken; Karl G. Linden;

  • 作者单位

    Department of Civil, Environmental, and Architectural Engineering;

    Center for Environmental Mass Spectrometry, University of Colorado, UCB 428, Boulder, Colorado 80309, United States;

    Center for Environmental Mass Spectrometry, University of Colorado, UCB 428, Boulder, Colorado 80309, United States;

    U.S. Geological Survey, Boulder, Colorado 80309, United States;

    Department of Civil, Environmental, and Architectural Engineering;

  • 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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  • 正文语种 eng
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