PDF(7082 KB)
Application of multi-polar elastic push-down geophones in uphole surveys
YouPing YAN, Sha CHENG, Yong TAN, YaTing ZHENG, Geng WANG
Prog Geophy ›› 2026, Vol. 41 ›› Issue (4) : 1876-1885.
PDF(7082 KB)
PDF(7082 KB)
Application of multi-polar elastic push-down geophones in uphole surveys
As an essential technique for near-surface structure investigation, the uphole survey has traditionally employed a "downhole excitation-surface reception" acquisition approach.In contrast, the "surface excitation-downhole reception" mode offers distinct advantages including flexible source selection, lower operational costs, and enhanced safety. However, the coupling issue between downhole geophones and formations has long hindered the widespread adoption of this method. This study proposes an innovative downhole geophone coupling method based on a multi-polar pushing system with circular spring tubes, effectively addressing the adaptability limitations of conventional airbag inflation and mechanical pushing approaches. By implementing cable relaxation, cable wave interference was successfully eliminated. The adoption of a geoelectric signal triggering method resolved the time-delay issues associated with hammer source short-circuit triggering. High-quality deep uphole survey data acquisition was achieved using hammer sources under complex surface conditions in loess tablelands and desert areas. The designed heavy hammer source meets the energy requirements for ultra-deep uphole surveys while maintaining excellent wavelet consistency, providing high-quality raw data for Q-surveys in loess tableland ultra-deep wells..
Micro-log / Downhole geophone / Coupling / Push-against device / Spring tube / Heavy hammer / Cable wave / Triggering mechanism
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江民, 邹强, 赵锐锐. 2021. 塔里木盆地近地表Q值调查方法研究. //中国石油学会2021年物探技术研讨会论文集. 成都, 224-227.
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感谢审稿专家提出的修改意见和编辑部的大力支持!
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