Title:
ACTUATING MECHANISM FOR ROTARY GUIDE DEVICE AND ROTARY GUIDE DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/174732
Kind Code:
A1
Abstract:
Disclosed are an actuating mechanism for a rotary guide device and a rotary guide device using same. The actuating mechanism comprises a driving valve element (1), a driven valve element (2), a first cavity (3), a second cavity (4) and a high-pressure mud driving channel (5), wherein the first cavity (3) comprises a first low-pressure port (301) in communication with low-pressure mud, the first cavity (3) further comprises a first high-pressure port (302) in communication with high-pressure mud, the driving valve element (1) can selectively open and close the first low-pressure port (301) and the first high-pressure port (302) to adjust the pressure in the first cavity (3), two sides of the driven valve element (2) are respectively adjacent to the first cavity (3) and the second cavity (4), the driven valve element (2) moves in response to the pressure difference between the first cavity (3) and the second cavity (4), the driven valve element (2) is connected to the high-pressure mud driving channel (5), and the high-pressure mud driving channel is switched between an open state and a closed state in response to the movement of the driven valve element (2). In the actuating mechanism, by means of the linkage effect between the driving valve element (1) and the driven valve element (2), the system power consumption can be effectively reduced on the basis of increasing the response speed.
Inventors:
LIU QINGBO (CN)
DI QINGYUN (CN)
YANG YONGYOU (CN)
WANG XIANGYANG (CN)
XIE QIJUN (CN)
DI QINGYUN (CN)
YANG YONGYOU (CN)
WANG XIANGYANG (CN)
XIE QIJUN (CN)
Application Number:
PCT/CN2020/099626
Publication Date:
September 10, 2021
Filing Date:
July 01, 2020
Export Citation:
Assignee:
INST GEOLOGY & GEOPHYSICS CAS (CN)
International Classes:
E21B7/04
Foreign References:
| CN111287655A | 2020-06-16 | |||
| CN110130830A | 2019-08-16 | |||
| CN202220554U | 2012-05-16 | |||
| CN105525873A | 2016-04-27 | |||
| CN105275394A | 2016-01-27 | |||
| CN107386970A | 2017-11-24 | |||
| US20020011358A1 | 2002-01-31 |
Attorney, Agent or Firm:
BEIJING JUNHUI INTELLECTUAL PROPERTY AGENT OFFICE (ORDINARY PARTNERSHIP) (CN)
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