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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2005, Vol. 6 Issue (12): 10-    DOI: 10.1631/jzus.2005.A1420
    
Ultrasonic tomography and its applications in oilfield
Zhong Xing-fu, Wu Ying-xiang, Li Dong-hui, Li Qiang, Wang Xing-guo
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China; China Petroleum Logging Co. Ltd. Changqing Business Division, Changqing 710021, China; Daqing Production Well Logging Institute, Daqing 163453, China
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Abstract  UTT (Ultrasonic Tomography Tool) is widely used in the oil industry and can be used to inspect corrosion, casing wall damage, casing breakoff, and casing distortion in the well borehole with the maximum environment temperature being 125 °C, and the pressure being 60 MPa. UTT consists of tool head, upper centralization, electronic section, lower centralization, transmitters, and receivers. Its outer diameter is 4.6 cm and length is 320 cm. The measured casing diameter ranges from 60 mm to 254 mm. The tomography resolution is 512×512. The borehole measurement accuracy is 2 mm. It can supply 3D pipe tomography, including horizontal and vertical profile. This paper introduces its specification, measurement principle, and applications in oilfield.

Key words： Ultrasonic tomography      Downhole tool      Casing hole     
Received: 07 September 2005     
CLC:  TB126  
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Zhong Xing-fu
Wu Ying-xiang
Li Dong-hui
Li Qiang
Wang Xing-guo
Cite this article:

Zhong Xing-fu, Wu Ying-xiang, Li Dong-hui, Li Qiang, Wang Xing-guo. Ultrasonic tomography and its applications in oilfield. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2005, 6(12): 10-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2005.A1420     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2005/V6/I12/10

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