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Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Experimental Study on Ultrasonic Descaling Technology for Pipelines in Oilfield

Author of the article:Fu Tiantian, Li Dan, Peng Zhuang, Chen Qirui

Author's Workplace：Petroleum Engineering College of YANGTZE University

Key Words：Pipeline; Ultrasonic; Anti-scaling and descaling; Calcium sulfate; Frequency

Abstract：

Scale has seriously impacted the normal operation of oil field. Ultrasonic treatment, as a new physical descaling technology, is getting more attention. To ascertain that ultrasonic treatment has effect on pipeline's anti-scaling, a set of ultrasonic descaling device was designed to experiment at different frequency of 20kHz, 28kHz, 68kHz, 120kHz respectively. For calcium carbonate, it was found that anti-scale effect was best under frequency of 28kHz; best descaling and economical benefit can be got when ultrasonic lasted for 5 minutes,with weaker ability of form crystals; the anti-scale ability is stronger at the ultrasonic action cycle of 12 hours. According to comparison for the results of ultrasonic scaling experiment for four salt scales, namely calcium carbonate, calcium sulfate, barium sulfate, and strontium sulfate, it is found that ultrasonic treatment has the best descaling effect on calcium sulfate.