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        3. [1]譚寶海,唐曉明,張凱.隨鉆聲波測井的正弦脈沖激勵方法和實驗研究[J].測井技術,2018,42(06):629-633.[doi:10.16489/j.issn.1004-1338.2018.06.004]
           TAN Baohai,TANG Xiaoming,ZHANG Kai.Sine-wave Pulse Excitation Circuit Method and Experiment Study for LWD Acoustic Logging[J].WELL LOGGING TECHNOLOGY,2018,42(06):629-633.[doi:10.16489/j.issn.1004-1338.2018.06.004]
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          隨鉆聲波測井的正弦脈沖激勵方法和實驗研究()
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          《測井技術》[ISSN:1004-1338/CN:61-1223/TE]

          卷:
          第42卷
          期數:
          2018年06期
          頁碼:
          629-633
          欄目:
          方法研究
          出版日期:
          2018-12-31

          文章信息/Info

          Title:
          Sine-wave Pulse Excitation Circuit Method and Experiment Study for LWD Acoustic Logging
          文章編號:
          1004-1338(2018)06-0629-05
          作者:
          譚寶海唐曉明張凱
          中國石油大學華東地球科學與技術學院,山東青島266580
          Author(s):
          TAN BaohaiTANG XiaomingZHANG Kai
          School of Geosciences, China University of Petroleum, Qingdao, Shandong 266580, China
          關鍵詞:
          隨鉆聲波測井聲源激勵推挽式功率放大頻率帶寬
          Keywords:
          LWD acoustic logging transducer excitation push-pull power amplifier frequency bandwidth
          分類號:
          P631.84
          DOI:
          10.16489/j.issn.1004-1338.2018.06.004
          文獻標志碼:
          A
          摘要:
          多極子隨鉆聲波測井受鉆鋌直達波干擾影響嚴重,將聲源激勵頻率控制在隔聲體阻帶內是獲得高信噪比數據的重要方法。傳統單脈沖激勵源因其諧振點工作和寬頻特性難以滿足要求。針對這一問題,設計了基于推挽式功率放大結構的門控正弦波脈沖激勵電路,包括發射主控制器、信號發生、半波整流、功率放大、脈沖變壓器及高壓儲能等電路單元。通過實驗研究,激勵同一換能器的聲源頻率、相位和帶寬均可控,實現了多極子模式的發射,并給出了聲源周期數量設計的參考依據。
          Abstract:
          Multipole LWD acoustic logging are affected seriously by direct waves along the drill collar. In order to obtain high SNR data, it is an effective method to control the frequency of excitation sources into the attenuation domains of the isolator. However, the traditional single pulse signals cannot meet the above demands for their broad frequencies and resonance working status. Therefore, this paper designs a gate sine-wave pulse excitation circuit based on push-pull power amplification structure to solve this problem. The circuit consists of an excitation controller, a signal generator, a detector, a power amplifier, a pulse transformer and a power storage circuit. Through experimental research, the frequency, phase and bandwidth of the sound source of the same transducer are all adjustable, which realizes the multi-pole mode emission and obtains the reference basis for the design of the number of sound source cycles.

          參考文獻/References:

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          相似文獻/References:

          [1]蘇遠大,莊春喜,鄧林,等.隨鉆聲波測井隔聲體性能評價實驗研究[J].測井技術,2011,35(05):402.
           SUYuanda,ZHUANG Chunxi,DENG Lin,et al.Experimental Research on Performance Evaluation of LWD Acoustic Isolator[J].WELL LOGGING TECHNOLOGY,2011,35(06):402.
          [2]尚海燕,周靜,燕并男.聲波鉆桿信道及信息傳輸仿真研究[J].測井技術,2015,39(02):165.[doi:10.16489/j.issn.1004-1338.2015.02.007]
           SHANG Haiyan,ZHOU Jing,YAN Bingnan.On Simulation of Acoustic Drill String Channel and Information Transmission[J].WELL LOGGING TECHNOLOGY,2015,39(06):165.[doi:10.16489/j.issn.1004-1338.2015.02.007]
          [3]吳金平,陸黃生,張衛,等.用于隨鉆聲波測井的圓弧片狀壓電振子[J].測井技術,2016,40(03):317.[doi:10.16489/j.issn.1004-1338.2016.03.012]
           WU Jinping,LU Huangsheng,ZHANG Wei,et al.Arc Plate-type Piezoelectric Vibrator Used in Acoustic Logging-while-drilling[J].WELL LOGGING TECHNOLOGY,2016,40(06):317.[doi:10.16489/j.issn.1004-1338.2016.03.012]

          備注/Memo

          備注/Memo:
          基金項目:國家自然科學基金面上項目“隨鉆聲波測井雙源反激隔聲方法及實驗研究”(41774138);國家自然科學基金青年基金項目“基于反褶積最優化設計的雙源反激過套管聲波測井理論和方法研究”(41804121) 第一作者:譚寶海,男,1978年生,講師,從事石油測控儀器教學和研發工作。E-mail:[email protected]
          更新日期/Last Update: 2018-12-31
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