短距离钻杆声波传输的频域分析  

Frequency domain analysis of short-range acoustic wave in drill pipe

作　　者：高理[1] 程为彬[1] 李铭钧 刘峰[1] 马强 GAO Li;CHENG Weibin;LI Mingjun;LIU Feng;MA Qiang(College of Electronic Engineering,Xi’an Shiyou University,Xi’an 710065,China;Changqing Branch,China Petroleum Logging Co.,Ltd.,Xi’an 710006,China)

机构地区：[1]西安石油大学电子工程学院,陕西西安710065 [2]中国石油集团测井有限公司长庆分公司,陕西西安710006

出　　处：《浙江工业大学学报》2020年第3期345-349,共5页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金青年基金项目(51704238);陕西省工业科技攻关项目(2016GY-059);陕西省教育厅重点实验室科研项目(15JS083)。

摘　　要：为研究声波在钻杆中的短距离传输特性,获取适合传输井下信息的声波频段,以特制的钻杆短节作为传输信道,以激振器作为激励源进行钻杆声波传输特性测试试验,并采集试验数据进行频谱分析。结果表明:在钻杆中传输的声波信号的频谱是从零频附近开始的基带信号,在接收到的声波信号的整个频带范围内,不同频段的幅值是不同的;改变激振器的激励频率,在2000~4000 Hz之间接收到的声波信号强度明显大于其他频段的信号强度。因此,在井下利用声波通信是可行且前景可期的。To study the characteristics of short-range acoustic transmission in drill pipe and obtain the sound wave band suitable for underground information transmission,the special drill pipe is used as the channel and the vibration exciter is used as the excitation source in the laboratory to test the characteristics of acoustic transmission,the test data is collected and analyzed.The results show that the frequency spectrum of the acoustic signal transmitted in the drill pipe is the baseband signal starting from zero frequency,and the amplitudes of different frequency bands are different in the whole frequency band of the received acoustic signal.When the frequency of the exciter is changed,the maximum power of the received acoustic signal is always in the vicinity of 2000~4000 Hz.Therefore,it is feasible and promising to use acoustic communication in the downhole.

关 键 词：钻杆 短距离 声波传输 频域分析 

分 类 号：TN911.6[电子电信—通信与信息系统]