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Multilevel Evaluation Method of Acoustic Frequency Spectrum in Periodic Pipe Structure Based on Improved Radar Chart Method
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Yan YAN1, 2, Li-hong HAN1, Yong-hong LIU2, Zhi-chuan GUAN3, Qing WANG4
Science Technology and Engineering | 2025, 25(2) : 521 - 529
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Science Technology and Engineering | 2025, 25(2): 521-529
• Papers·Petroleum and Natural Gas Industry •
Multilevel Evaluation Method of Acoustic Frequency Spectrum in Periodic Pipe Structure Based on Improved Radar Chart Method
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Yan YAN1, 2, Li-hong HAN1, Yong-hong LIU2, Zhi-chuan GUAN3, Qing WANG4
Affiliations
  • 1 State Key Laboratory of Oil and Gas Equipment, CNPC Tubular Goods Research Institute, Xi'an 710077, China
  • 2 College of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao 266580, China
  • 3 School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China
  • 4 CNPC Engineering Technology R&D Co., Beijing 102206, China
Published: 2025-01-18 doi: 10.12404/j.issn.1671-1815.2402628
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Acoustic wave is one of the important means to realize the fast and accurate transmission of downhole information. The drill string serving as information transmission channel has obvious periodic pipe structure characteristics. In order to study the frequency spectrum quality of drill string channel in actual working conditions, a multilevel evaluation method of acoustic frequency spectrum based on improved radar chart was provided. The influence of axial tension stress on the frequency spectrum characteristics of acoustic wave in pipe structure was studied and analyzed by the method, and the criteria for judging the frequency spectrum characteristics were established. Practice shows that, the existence of tensile stress has a significant impact on the acoustic frequency spectrum and passband characteristics. With the increase of tensile stress, the evaluation index of frequency spectrum characteristic increases first and then decreases, and there exists a peak point with the best frequency spectrum characteristic. This method can comprehensively reflect the influence of different factors on the frequency spectrum characteristics of acoustic wave in drill string channel, and comprehensively evaluate the distortion degree of frequency spectrum characteristics from the multiple perspectives. It provides a basis for optimizing carrier frequency and designing the installation position of repeater when dealing with multi-factors interference in the field application of downhole information acoustic transmission technology.

downhole information  /  acoustic propagation  /  frequency spectrum characteristic  /  comprehensive evaluation  /  radar chart  /  tensile stress
Yan YAN, Li-hong HAN, Yong-hong LIU, Zhi-chuan GUAN, Qing WANG. Multilevel Evaluation Method of Acoustic Frequency Spectrum in Periodic Pipe Structure Based on Improved Radar Chart Method[J]. Science Technology and Engineering, 2025 , 25 (2) : 521 -529 . DOI: 10.12404/j.issn.1671-1815.2402628
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doi: 10.12404/j.issn.1671-1815.2402628
  • Receive Date：2024-04-11
  • Online Date：2025-12-05
  • Published：2025-01-18
Article Data
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History
  • Received：2024-04-11
  • Revised：2024-11-06
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Affiliations
    1 State Key Laboratory of Oil and Gas Equipment, CNPC Tubular Goods Research Institute, Xi'an 710077, China
    2 College of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao 266580, China
    3 School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China
    4 CNPC Engineering Technology R&D Co., Beijing 102206, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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