万米深井超声一兰姆波测井仪器工作参数研究

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中图分类号：P631 文献标识码：A DOI：10.13810/j.cnki.issn.1000-7210.20250194

Abstract： Ultrasonic Lamb wave logging plays a significant role in evaluating cementing quality and detecting casing damage.This paper takes China’s first scientific exploration wellwith a depth exceeding 10，000 meters as its research subject.Theeffects of casing thickness，mud velocity，excitation frequency，and other factors on the quality ofultrasonic Lamb wave logging data are systematically investigated.The results show thatthe excitation frequencies of ultrasonic resonance waves and flexural Lamb waves gradually decrease as the casing thickness increases.Under conditions of high mud velocity and thick-walled casing，increasing the incidence angle of flexural Lamb wave logging is more favorable for exciting single-mode waves， making the direct waves and reflected waves in thefull-waveform easier to distinguish in the time domain.Based on theoretical simulations and experimental tests，the ultrasonic Lamb wave logging parameters suitable for l0o00-meter-deep welloperations are optimized.Field test results demonstrate that the domestically developed ultrasonic Lamb wave logging tool achieves an average signal-to-noise ratio greater than 30 dB at depths exceeding 10o00 meters （measured bottom depth 10718.0m ）， providing important technical support for engineering decision-making.

Keywords： deep earth，ultra-deep layer，cementingquality，Lamb wave郭清滨，葛盛权，朱雷，等，万米深井超声一兰姆波测井仪器工作参数研究[J].石油地球物理勘探，2026，61（2） ： 536-544.Guo Qingbin， Ge Shengquan， Zhu Lei， et al. Study of operating parameters for ultrasonic Lamb wave log-ging instruments in ultra-deep wells[J].Oil Geophysical Prospecting，2026，61（2）： 536-544.

0 引言

随着全球能源需求持续增长，深地油气勘探开发已成为保障国家能源安全的重要战略方向，井筒完整性评价是深地油气勘探开发工程技术领域的重要组成部分[1-5]。（剩余9566字）