西南石油大学学报(自然科学版)

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Design of Multi-functional Ultrasonic Imaging Logging Tool

Sun Zhifeng1,2, Chou Ao1, Chen Honghai1   

  1. 1. China Oilfield Services Limited,Tongzhou,Beijing 101149,China
    2. National Engineering Laboratory for Offshore Oil Exploration,Tongzhou,Beijing 101149,China
  • Online:2014-12-01 Published:2014-12-01

Abstract:

Based on the measurement principle of the ultrasonic impulse method,we designed a Multi-functional ultrasonic
imaging logging tool,and explained how it works. It can conduct borehole wall imaging with the imaging mode of high
resolution in open hole. It can also conduct casing inspection and cement bonding evaluation with the full wave mode in the
cased hole. The proposed tool was tested in open hole and cased hole. Results shows that this tool can evaluate the geologic
feature information,such as fracture,hole and bedding structure in open hole. The casing thickness imaging,inner and outer
diameter imaging and cement impedance imaging can also be measured in the cased hole. This tool can provide quantitative
evaluation of casing corrosion and cement bonding quality.

Key words: ultrasonic impulse, borehole surface imaging, casing inspection, cement bonding, acoustic logging