Equipment and technique for improving penetration rate by the transformation of drill string vibration to hydraulic pulsating jet

Petroleum Exploration and Development - Tập 41 - Trang 678-683 - 2014
Zhichuan GUAN1, Hongning ZHANG1, Wei ZHANG2, Yongwang LIU1, Deyang LIANG1
1College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China
2Drilling Company of West Drilling Corp. of CNPC, Kelamayi 834009, China

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