随钻超声阵列测井仪激励电路设计
Design of Excitation Circuit for Logging While Drilling Ultrasonic Array Logging Tool
王怡宁 1谭宝海 1苏远大 1张凯 1王智琛 1凌子晨1
作者信息
- 1. 中国石油大学(华东)地球科学与技术学院,山东青岛 266580;中国石油大学(华东)深层油气重点实验室,山东青岛 266580
- 折叠
摘要
通过随钻超声阵列测井仪获得的井壁反射特性可实时跟踪井身剖面,获取裂缝地层信息.随钻超声阵列测井仪激励电路的稳定性直接决定声波数据的质量.采用双极性脉冲激励的方式设计了一种随钻超声阵列测井仪激励电路,介绍了该电路的软、硬件设计,并进行了电路性能测试和实际测井试验.试验结果表明,该电路激励能量强,波形调节灵活,能够有效压制后续拖尾信号;同时测井信号清晰稳定,能够有效反映地层性质,为随钻阵列超声测井提供了技术参考.
Abstract
Through the wellbore reflection characteristics obtained by ultrasonic array logging tool while drilling, the wellbore profile is studied in real time, and the fractured formation information is obtained. The stability of the excitation circuit of ultrasonic array logging tool while drilling directly determines the quality of acoustic data. An excitation circuit of ultrasonic array logging tool while drilling is designed by means of bipolar pulse excitation. The software and hardware design of the circuit is introduced, and the circuit performance test and actual logging test are carried out. The test results show that the circuit has strong excitation energy. The waveform adjustment is flexible, which can effectively suppress the subsequent trailing signal. The logging signal is clear and stable, which can effectively reflect the properties of the formation and provides a technical reference for array ultrasonic logging while drilling.
关键词
随钻超声/测井仪器/激励电路/拖尾抑制/井场实验Key words
logging while drilling ultrasonic/logging tool/excitation circuit/trailing suppression/well site test引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据