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首页> 外文期刊>Environmental Science & Technology >Methane Emissions from Abandoned Oil and Gas Wells in California
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Methane Emissions from Abandoned Oil and Gas Wells in California

机译：加利福尼亚州废弃石油和天然气井的甲烷排放

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摘要

California hosts ～ 124,000 abandoned and plugged (AP) oil and gas wells, ～38,000 idle wells, and ～63,000 active wells, whose methane (CH_4) emissions remain largely unqualified at levels below ～2 kg CH_4 h~(-1) . We sampled 121 wells using two methods: a rapid mobile plume integration method (detection ～0.5 g CH_4 h~(-1) ) and a more sensitive static flux chamber (detection ～1 × 10~(-6) g CH_4 h~(-1)). We measured small but detectable methane emissions from 34 of 97 AP wells (mean emission: 0.286 g CH_4 h~(-1)). In contrast, we found emissions from 11 of 17 idle wells-which are not currently producing (mean: 35.4 g CH_4 h~(-1))-4 of 6 active wells (mean: 189.7 g CH_4 h~(-1)), and one unplugged well-an open casing with no infrastructure present (10.9 g CH_4 h~(-1)). Our results support previous findings that emissions from plugged wells are low but are more substantial from idle wells. In addition, our smaller sample of active wells suggests that their reported emissions are consistent with previous studies and deserve further attention. Due to limited access, we could not measure wells in most major active oil and gas fields in California; therefore, we recommend additional data collection from all types of wells but especially active and idle wells.
机译：加利福尼亚州主持人〜124,000被遗弃和堵塞（AP）油气井，〜38,000井井，〜63,000个活性孔，其甲烷（CH_4）排放仍然在〜2kg CH_4 h〜（-1）水平下仍然不合格。使用两种方法采样121孔：快速移动羽流集成方法（检测〜0.5克CH_4 H〜（-1））和更敏感的静态通量室（检测〜1×10〜（ - 6）G CH_4 H〜（ -1））。我们测量了97个AP孔中的34个（平均发射：0.286g ch_4h〜（-1））的44个甲烷排放量。相比之下，我们发现了17个怠速井中的10种 - 目前没有产生的排放量（平均值：35.4g ch_4 h〜（-1）） - 4个活动孔中的4个（平均值：189.7g ch_4 h〜（-1）） ，一个拔出的良好开放式套管，没有基础设施存在（10.9 g ch_4 h〜（-1））。我们的结果支持前面的发现，堵塞井的排放量很低，但与怠速井更加重要。此外，我们较小的活跃井样本表明，他们报告的排放与以前的研究一致，值得进一步关注。由于通行有限，我们无法衡量加利福尼亚州大多数主要的活性石油和天然气领域;因此，我们建议从所有类型的井中提供额外的数据收集，但特别是活跃和闲置的井。

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  • 来源
    《Environmental Science & Technology》 |2020年第22期|14617-14626|共10页
  • 作者

    Eric D. Lebel; Harmony S. Lu; Lisa Vielstaedte; Mary Kang; Peter Banner; Marc L. Fischer; Robert B. Jackson;

  • 作者单位

    Department of Earth System Science Stanford University Stanford 94305 California United States;

    Department of Earth System Science Stanford University Stanford 94305 California United States;

    Department of Earth System Science Stanford University Stanford 94305 California United States;

    Department of Earth System Science Stanford University Stanford 94305 California United States Civil Engineering and Applied Mechanics McGill University Montreal H3A 0G4 Quebec Canada;

    Support Resources Inc. Malibu 90265 California United States;

    Air Quality Research Center University of California Davis Davis 95616 United States Energy Technology Area Lawrence Berkeley National Laboratory Berkeley 94720 California United States;

    Department of Earth System Science and Woods Institute for the Environment and Precourt Institute for Energy Stanford University Stanford 94305 California 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);
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