为验证新WGK-1型测氦仪在怀4井观测的可行性,在相同观测条件下,将新旧测氦仪串联并行观测,经动态稳定性、内在质量及观测曲线对比发现,新测氦仪能够捕捉到更多更完整的地下流体信息,观测数据日变化规则,动态特征明显,且2台测氦仪产出数据具有同步性变化特征。为进一步验证新旧测氦仪的相关性,与同台气温测项进行对比分析,发现2台测氦仪氦气测值与气温同时存在短期负相关变化。综合分析认为,新旧测氦仪产出观测数据真实可靠,均能反映怀4井地下流体中氦气的浓度变化。
In order to verify the feasibility of the new WGK-1 helium concentration measuring instrument in Huailai No.4 well, observations by new and old helium instruments were carried out under the same observation conditions at the same time. Through the comparison of dynamic stability, internal quality and observation curve, we found that the new helium instrument can capture more complete underground fluid information, and the daily variation of its observation data and dynamic characteristics are obvious. In addition, it is found that the data observed by the new and old helium instruments change synchronously. To further verify the correlation between the new and old helium instruments, a comparison with the temperature item observations measured at HuaiLai Seismic Station was carried out. It is found that there is a short-term negative correlation between the helium values measured by the two instruments and the air temperature. The comprehensive result shows that the observation data of the new and old helium instruments are authentic and reliable, which can reflect the change of helium concentration in the underground fluid of Huailai No.4 well.
2021,42(3): 225-231 收稿日期:2020-08-08
DOI:10.3969/j.issn.1003-3246.2021.03.027
基金项目:国家重点研发计划(项目编号:2019YFC1509203)
作者简介:张帆(1991-),男,工程师,主要从事地震监测等工作。E-mail:619843566@qq.com
*通讯作者:杨竹转(1976-),女,副研究员,从事地震地下流体观测与研究工作。E-mail:xiaoyangzhzh@163.com
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