石油物探2026，Vol.65Issue(1)：176-181,6.DOI:10.12431/issn.1000-1441.2024.0253
弯曲振动的偶极子发射换能器高温高电压激励试验
High temperature and high voltage excitation test of dipole transducers based on bending vibration
摘要
Abstract
The laminated dipole emission transducer with bending vibration for acoustic logging serves as a core component of conventional dipole logging tools.Its radiation performance and stability under high-temperature and high-pressure conditions directly determine the quality of acoustic logging data.To meet the requirements of ultra-deep well exploration,multi-cycle high-temperature(230℃)oil bath testing,combined with high-voltage(1 800 V)excitation,was conducted to monitor the acoustic impedance characteristics of the transducer assembly in real time.Results indicate that transducers fabricated with commercial high-temperature piezoelectric ceramic materials and stringent manufacturing processes exhibit no debonding or fracture throughout four rounds of extreme testing.The resonant frequency shows a low-frequency shift(<5％),while the maximum electrical conductance decreases significantly(85％-95％reduction in X/Y directions).Static capacitance increases reversibly with temperature,and the mechanical quality factor remains stable(<10％fluctuation).Parameter variations are consistent in the X andY directions,with differences within acceptable engineering tolerances.This study provides critical data support for the development of high-temperature acoustic logging tools,dipole remote detection systems,and push-type long-duration operation equipment,while also verifying the reliability limits of materials and processes under extreme 230℃conditions.关键词
弯曲振动/偶极子换能器/230℃高温油浴/高电压激励Key words
bending vibration/dipole transducer/high-temperature oil bath at 230℃/high-voltage excitation分类
能源科技引用本文复制引用
吴彩虹,王东,周冬冬..弯曲振动的偶极子发射换能器高温高电压激励试验[J].石油物探,2026,65(1):176-181,6.基金项目
中国三峡集团上海勘测设计研究院有限公司科研项目(2024JC(83)-003)资助.This research is financially supported by the Research Project of Shanghai Investigation,Design&Research Institute Co.,Ltd.,China Three Gorges Corporation(Grant No.2024JC(83)-003). （2024JC(83）
