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首页> 外文期刊>Seismological research letters >Crustal Deformation in the Hutubi Underground Gas Storage Site in China Observed by GPS and InSAR Measurements
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Crustal Deformation in the Hutubi Underground Gas Storage Site in China Observed by GPS and InSAR Measurements

机译：中国HUTUBI地下气存现场的地壳变形，GPS和INSAR测量观察到

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摘要

Underground gas storage (UGS) facilities are important in the global natural gas delivery chain. Here, we examine continuous Global Positioning System (GPS) observations and Interferometric Synthetic Aperture Radar (InSAR) time series to investigate the regional crustal deformation and seismic hazard associated with the Hutubi UGS (HUGS) facility in the Xinjiang Uygur Autonomous Region, currently China's largest UGS site. The results indicate that the ground surface subsides slightly during spring, dramatically during summer and gently during autumn, and uplifts slightly during winter. The vertical deformation in the HUGS area is dominated by changes in the subsurface water level. The impact of the similar to 50-m lowering in the groundwater level during summer on the source signal at the Hutubi Non-explosive Active Source Station (HUNAS) cannot be ignored during seismic waveform data processing. The rapid uplift from June 2013 to October 2014 reflects rapid elastic or plastic rebound of the UGS cap rock related to long-term compression during oil exploitation prior to 2013. The maximum uplift and subsidence values are estimated to be 15.5 and -13.7 mm, respectively, consistent with the gas well pressure changes. An increase or decrease of 1 MPa in the gas pressure produces 2.63 mm of uplift or 2.11 mm of subsidence, respectively. The monthly pore-pressure changes caused by gas injection and withdrawal vary from -0.071 to 0.093 MPa. These variations are large enough to induce small earthquakes at the HUGS site, which were observed by the local seismic network between 2013 and 2016. The risk of moderate-to strong-magnitude earthquakes in the HUGS region cannot be ignored in the future due to the large gas storage.
机译：地下储气（UGS）设施在全球天然气输送链中很重要。在这里，我们检查连续全球定位系统（GPS）观察和干涉式合成孔径雷达（INSAR）时间序列，以研究目前中国最大的新疆UYGUR自治区HUTUBI UGS（HUGS）设施相关的区域地壳变形和地震危害UGS网站。结果表明，地面在春季期间略微消退，在夏季和在秋季轻轻地进行速度，在冬季稍微提升。拥抱区域的垂直变形是由地下水位的变化主导。在地震波形数据处理期间，在夏季，在夏季，在夏季，在地下水中的源信号期间，在地下水位中降低的影响在地震波形数据处理期间不能被忽略。 2013年6月至2014年10月的快速隆起反映了与2013年之前的石油开采期间与长期压缩相关的UGS帽岩石的快速弹性或塑料反弹。估计最大隆起和沉降值分别为15.5和-13.7 mm ，与气体井压力变化一致。气体压力中的1MPa的增加或减少分别产生2.63mm的隆起或2.11mm的沉降。由气体注射和戒断引起的每月孔隙压力变化从-0.071℃变化至0.093MPa。这些变化足够大，以诱导拥抱场地的小地震，这是由2013年和2016年之间的当地地震网络观察到的。由于未来，在未来的情况下，在未来的中断到强度地震的风险不会被忽视大型储气。

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  • 来源
    《Seismological research letters》 |2018年第4期|共11页
  • 作者

    Qiao Xuejun; Chen Wei; Wang Dijin; Nie Zhaosheng; Chen Zhengsong; Li Jie; Wang Xiaoqiang; Li Yu; Wang Tan; Feng Guangcai;

  • 作者单位

    China Earthquake Adm Inst Seismol Key Lab Earthquake Geodesy Hongshancelu 40 Wuhan 430071 Hubei Peoples R China;

    China Earthquake Adm Inst Seismol Key Lab Earthquake Geodesy Hongshancelu 40 Wuhan 430071 Hubei Peoples R China;

    China Earthquake Adm Inst Seismol Key Lab Earthquake Geodesy Hongshancelu 40 Wuhan 430071 Hubei Peoples R China;

    China Earthquake Adm Inst Seismol Key Lab Earthquake Geodesy Hongshancelu 40 Wuhan 430071 Hubei Peoples R China;

    China Earthquake Adm Inst Seismol Key Lab Earthquake Geodesy Hongshancelu 40 Wuhan 430071 Hubei Peoples R China;

    Earthquake Adm Xinjiang Urumqi Autonomous Reg Beijingnanlu 42 Urumqi 830011 Xinjiang Peoples R China;

    Earthquake Adm Xinjiang Urumqi Autonomous Reg Beijingnanlu 42 Urumqi 830011 Xinjiang Peoples R China;

    Natl Earthquake Infrastruct Serv Sanlihelu 56 Beijing 100045 Peoples R China;

    Natl Earthquake Infrastruct Serv Sanlihelu 56 Beijing 100045 Peoples R China;

    Cent S Univ Sch Geosci &

    Infophys Lushannanlu 932 Changsha 410083 Hunan Peoples R China;

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  • 正文语种 eng
  • 中图分类 地震学;
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