[1]CHEN Xuefen,WU Weiwei,LIU Xuemei,et al.Observational Experiment for Escaped Hydrogen from Wellbore at Wenchuan Yingxiu Seismic Station[J].Journal of Seismological Research,2020,43(04):638-643.
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Observational Experiment for Escaped Hydrogen from Wellbore at Wenchuan Yingxiu Seismic Station
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 04
Page number:
638-643
Column:
Public date:
2020-09-17
- Title:
- Observational Experiment for Escaped Hydrogen from Wellbore at Wenchuan Yingxiu Seismic Station
- Keywords:
- fault gas; escaped hydrogen of wellbore; hydrogen concentration; experimental observation; interference factor
- CLC:
- P315.724
- DOI:
- -
- Abstract:
- In order to further understand the dynamic characteristics of escaped hydrogen from the fractured fault zone in the Wenchuan aftershock region,we selected the observational hole(the Yingxiu Seismic Station)which located in the Beichuan-Yingxiu fault,and carried out the observation of escaped hydrogen from the wellbore.The experimental data show that the hydrogen concentration of the Yingxiu well is high,the daily variation amplitude is large and has obvious daily variation law,showing the characteristics of synchronous and negative correlation with the change of air pressure,the daily variation is less correlated with temperature,water temperature and static water level.Observational experiments by different instruments and sampling methods show that,the dynamic characteristics of hydrogen concentration escaping from the observation well at Yingxiu seismic station is clear and the measured value is stable,as an earthquake precursor,it is feasible to observe hydrogen escaping from underground.
- References:
- -
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Last Update:
2020-09-17