Drilling speed improvement device capable of producing both hydraulic pulse and impact vibration

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United States of America Patent

PATENT NO 10718176
SERIAL NO

16683496

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Importance

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Abstract

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The present invention discloses a drilling speed improvement device capable of producing both hydraulic pulse and impact vibration. The device has a pressure transfer rod that is arranged at an upper end of a lower joint. A spring chamber is formed among a drill body, the pressure transfer rod and the lower joint. A spring is arranged in the spring chamber. A communicating hole is formed in the drill body. A piston is arranged at an upper end of the pressure transfer rod. A pressure bearing head is arranged at an upper end of the piston. A pressure bearing base is arranged on the inner side of an upper joint. Drill bit impact loads and drilling fluid pulse jets are modulated by the longitudinal vibration energy of a drill stem, the rock breaking efficiency of a drill bit is improved by both dynamic and static loads, and harm caused by vibration of the drill stem is reduced.

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Patent Owner(s)

Patent OwnerAddress
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) NO 66 CHANGJIANG WEST ROAD HUANGDAO DISTRICT QINGDAO SHANDONG 266000 266000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guan, Zhichuan Shandong, CN 10 9
Liao, Hualin Shandong, CN 7 5
Liu, Yongwang Shandong, CN 15 15
Niu, Jilei Shandong, CN 7 7
Shi, Yucai Shandong, CN 8 7
Xu, Yuqiang Shandong, CN 3 1
Yang, Yandong Shandong, CN 13 43

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