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Title:
INTEGRATED LOGGING-WHILE-DRILLING ACOUSTIC WAVE-RECEIVING TRANSDUCER ENCAPSULATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/047633
Kind Code:
A1
Abstract:
Disclosed is an integrated logging-while-drilling acoustic wave-receiving transducer encapsulation device. A receiving transducer (8) is directly provided in a signal processing circuit (9). The signal processing circuit (9) is installed in an inner support frame (6). The inner support frame (6) is nested in a rectangular corrugated tube (7). The corrugated tube (7) has one deformable face having a corrugated structure, and is filled with an oil. The receiving transducer (8) is arranged at a side of the deformable face. A vibration-absorbing rubber member (12) has a U-shaped structure. A connection unit has one end connected to the signal processing circuit (9) and the other end connected to a main control circuit within a logging-while-drilling instrument. The device adopts an integrated encapsulation structure to facilitate installation. The transducer is directly installed on a circuit board, such that a signal can be processed in real-time when received by the transducer to reduce signal interference. The corrugated tube-incorporating encapsulation structure is adopted to reach hydraulic balance with external mud. A fastening cover of the encapsulation device uses a thin and lightweight structure to improve transmission of an acoustic wave, and in turn enhance detection sensitivity. The structural design is practical and novel, and has a wide range of future applications.

Inventors:
ZHENG, Jian (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
CHEN, Wenxuan (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
DI, Qingyun (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
WANG, Zili (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
SUN, Yuntao (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
YANG, Yongyou (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
ZHANG, Wenxiu (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
Application Number:
CN2018/097793
Publication Date:
March 14, 2019
Filing Date:
July 31, 2018
Export Citation:
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Assignee:
INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES (No. 19, Beitucheng West Road Chaoyang District, Beijing 9, 100029, CN)
International Classes:
E21B47/017; E21B47/14
Attorney, Agent or Firm:
BEIJING JINZHIPUHUA INTELLECTUAL PROPERTY AGENCY CO., LTD. (Suite 1809, Qingyun Dangdai PlazaNo. 43, N 3rd Ring Rd W. Haidian District, Beijing 6, 100086, CN)
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