Title:
DRILLING SPEED-INCREASING DEVICE DRIVEN BY UNDERGROUND MOTOR TO GENERATE IMPACT VIBRATION EFFECT
Document Type and Number:
WIPO Patent Application WO/2019/140907
Kind Code:
A1
Abstract:
Disclosed is a drilling speed-increasing device driven by an underground motor to generate an impact vibration effect, wherein the device uses the rotation energy of a screw motor as the power to drive a lower vibration starting body (17) to rotate, an upper vibration starting body (15) rotates relative to the lower vibration starting body (17), and a vibration starting steel ball (16) functions to reduce the friction force internally; the upper vibration starting body (17), when reciprocating in an axial direction, makes a spring (12) cooperating with the upper vibration starting body generate periodic compression to generate spring energy; the spring energy acts on the lower starting vibration body (17) and a main shaft (1) connected to a drill bit, and thus periodically provides drill pressure to the drill bit; and the periodic movement of the upper starting vibration body (15) and the spring (12) generates periodic axial vibrations for a tool.
Inventors:
LIAO HUALIN (CN)
YI CAN (CN)
NIU JILEI (CN)
GUAN ZHICHUAN (CN)
ZHOU ZHONGHAI (CN)
SHI YUCAI (CN)
LIU YONGWANG (CN)
YI CAN (CN)
NIU JILEI (CN)
GUAN ZHICHUAN (CN)
ZHOU ZHONGHAI (CN)
SHI YUCAI (CN)
LIU YONGWANG (CN)
Application Number:
PCT/CN2018/102274
Publication Date:
July 25, 2019
Filing Date:
August 24, 2018
Export Citation:
Assignee:
UNIV CHINA PETROLEUM EAST CHINA (CN)
International Classes:
E21B4/06
Domestic Patent References:
WO2011149363A1 | 2011-12-01 |
Foreign References:
CN108331527A | 2018-07-27 | |||
CN103375132A | 2013-10-30 | |||
CN103375133A | 2013-10-30 | |||
CN101581196A | 2009-11-18 | |||
CN203925277U | 2014-11-05 |
Attorney, Agent or Firm:
QINGDAO ZHIDILINGCHUANG PATENT AGENCY CO., LTD (CN)
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