Development of Eccentric Transmitter Transducer for LWD Acoustic Remote Detection
To address the challenge that traditional logging while drilling (LWD) acoustic transducers lack directional radiation capability, hindering the identification of geological structures outside the borehole in drilling environments, this study developed an eccentric transmitter transducer transducer...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Well Logging Technology
2025-06-01
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| Series: | Cejing jishu |
| Subjects: | |
| Online Access: | https://www.cnpcwlt.com/en/#/digest?ArticleID=5751 |
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| author | SUN Zhifeng QIU Ao LIU Xien LUO Bo LI Jie ZHAO Han |
| author_facet | SUN Zhifeng QIU Ao LIU Xien LUO Bo LI Jie ZHAO Han |
| author_sort | SUN Zhifeng |
| collection | DOAJ |
| description | To address the challenge that traditional logging while drilling (LWD) acoustic transducers lack directional radiation capability, hindering the identification of geological structures outside the borehole in drilling environments, this study developed an eccentric transmitter transducer transducer with directional radiation functionality. Numerical simulations of the transducer’s vibration modes, frequency response, and emission voltage level (EVL) are conducted via the finite element method, followed by prototype fabrication and anechoic tank testing. Experimental results demonstrated an EVL of 125 dB at 4.2 kHz, with horizontal directivity curves showing peak radiation energy at the 80° azimuth, consistent with theoretical simulations. The third-order bending vibration mode enabled directional energy radiation toward a specific side of the drill collar, fulfilling the requirements of low-frequency high-energy emission and asymmetric radiation for LWD acoustic remote detection. This transducer provides an effective solution for LWD acoustic remote detection, though future work should focus on optimizing high-temperature/high-pressure encapsulation and structural parameters. |
| format | Article |
| id | doaj-art-30631ca2eb904f348d97157b3d0f0f1a |
| institution | Kabale University |
| issn | 1004-1338 |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Well Logging Technology |
| record_format | Article |
| series | Cejing jishu |
| spelling | doaj-art-30631ca2eb904f348d97157b3d0f0f1a2025-08-20T03:42:57ZzhoEditorial Office of Well Logging TechnologyCejing jishu1004-13382025-06-0149343844310.16489/j.issn.1004-1338.2025.03.0121004-1338(2025)03-0438-06Development of Eccentric Transmitter Transducer for LWD Acoustic Remote DetectionSUN Zhifeng0QIU Ao1LIU Xien2LUO Bo3LI Jie4ZHAO Han5Well Tech Department, China Oilfield Services Limited, Langfang, Hebei 065201, ChinaWell Tech Department, China Oilfield Services Limited, Langfang, Hebei 065201, ChinaWell Tech Department, China Oilfield Services Limited, Langfang, Hebei 065201, ChinaWell Tech Department, China Oilfield Services Limited, Langfang, Hebei 065201, ChinaWell Tech Department, China Oilfield Services Limited, Langfang, Hebei 065201, ChinaWell Tech Department, China Oilfield Services Limited, Langfang, Hebei 065201, ChinaTo address the challenge that traditional logging while drilling (LWD) acoustic transducers lack directional radiation capability, hindering the identification of geological structures outside the borehole in drilling environments, this study developed an eccentric transmitter transducer transducer with directional radiation functionality. Numerical simulations of the transducer’s vibration modes, frequency response, and emission voltage level (EVL) are conducted via the finite element method, followed by prototype fabrication and anechoic tank testing. Experimental results demonstrated an EVL of 125 dB at 4.2 kHz, with horizontal directivity curves showing peak radiation energy at the 80° azimuth, consistent with theoretical simulations. The third-order bending vibration mode enabled directional energy radiation toward a specific side of the drill collar, fulfilling the requirements of low-frequency high-energy emission and asymmetric radiation for LWD acoustic remote detection. This transducer provides an effective solution for LWD acoustic remote detection, though future work should focus on optimizing high-temperature/high-pressure encapsulation and structural parameters.https://www.cnpcwlt.com/en/#/digest?ArticleID=5751logging while drillingeccentric transmitter transduceracoustic remote detectionfinite element analysisvibration modefrequency response |
| spellingShingle | SUN Zhifeng QIU Ao LIU Xien LUO Bo LI Jie ZHAO Han Development of Eccentric Transmitter Transducer for LWD Acoustic Remote Detection Cejing jishu logging while drilling eccentric transmitter transducer acoustic remote detection finite element analysis vibration mode frequency response |
| title | Development of Eccentric Transmitter Transducer for LWD Acoustic Remote Detection |
| title_full | Development of Eccentric Transmitter Transducer for LWD Acoustic Remote Detection |
| title_fullStr | Development of Eccentric Transmitter Transducer for LWD Acoustic Remote Detection |
| title_full_unstemmed | Development of Eccentric Transmitter Transducer for LWD Acoustic Remote Detection |
| title_short | Development of Eccentric Transmitter Transducer for LWD Acoustic Remote Detection |
| title_sort | development of eccentric transmitter transducer for lwd acoustic remote detection |
| topic | logging while drilling eccentric transmitter transducer acoustic remote detection finite element analysis vibration mode frequency response |
| url | https://www.cnpcwlt.com/en/#/digest?ArticleID=5751 |
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