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Development of Electric Drive Drilling Technology

DING Qing-shan,DONG Ping,LI Zhi-feng,HAN Guo-sheng,XUE Qi-long(1.Zhongyuan Petroleum Exploration Bureau,Puyang 457001,China; 2.Petroleum Engineering College,China University of Petroleum,Qingdao 255666,China)  
The recent progress of the latest foreign land drilling rigs,the advantages of AC variable frequency motor were analyzed and recommendations for the development of the country,the domestic development of the integrated electric drive rig the gap with foreign countries were compared and analyzed,and proposed further development of the oil rig trend.
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