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Patent Searching and Data


Title:
RESISTANCE REDUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/057116
Kind Code:
A1
Abstract:
A resistance reduction device, comprising a first mandrel (1), a first rotation device (7), a second rotation device (6), a second mandrel (10), a first moving device (11), a second moving device (12) and a first outer barrel (9). The first rotation device (7) is connected to the first mandrel (1), the second rotation device (6) is connected to the first rotation device (7), the second mandrel (10) is connected to the first moving device (11), the first moving device (11) is connected to the first outer barrel (9), and the second moving device (12) is connected to the first outer barrel (9). The device can generate two-way vibration in an axial direction and a circumferential direction, friction resistance between a drill column and a well wall can be greatly reduced, the problem of well drilling supporting pressure can be effectively solved, and stick-slip jamming of a drill can be effectively suppressed, thereby achieving the aims of improving well drilling efficiency and guaranteeing the safety of the drill column.

Inventors:
WANG DUANXIANG (CN)
CAO LIANGBO (CN)
SHAN DAIWEI (CN)
YAO YUXIANG (CN)
JIANG ZHONGJIAN (CN)
BAI MING (CN)
LI JIE (CN)
Application Number:
PCT/CN2020/096754
Publication Date:
April 01, 2021
Filing Date:
June 18, 2020
Export Citation:
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Assignee:
SICHUAN HONGHUA PET EQUIPMENT (CN)
International Classes:
E21B7/24; E21B7/04
Foreign References:
CN110671054A2020-01-10
CN211287523U2020-08-18
CN108166928A2018-06-15
CN107514233A2017-12-26
CN204920788U2015-12-30
CN103422814A2013-12-04
CN103899250A2014-07-02
CN109403866A2019-03-01
US20070000696A12007-01-04
US20180051518A12018-02-22
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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