Title:
SELF-VIBRATING DRILLING FLEXIBLE DRILLING TOOL
Document Type and Number:
WIPO Patent Application WO/2023/020540
Kind Code:
A1
Abstract:
A self-vibrating drilling flexible drilling tool, which relates to the technical field of flexible drilling tools and mainly comprises a flexible drill string and a self-vibrating stub (4). Various parts are connected by a universal transmission mechanism so as to shorten the length of a rigid section of the whole drilling tool, which can meet the requirements for guided drilling having a small radius of curvature. During sliding guided drilling, the self-vibrating stub (4) can continuously generate vibration, so that a downhole drill string creeps to thus reduce sliding friction, thereby effectively preventing the occurrence of sticking and clamping drills, facilitating the transmission of drilling pressure to a drill bit, and improving the drilling efficiency.
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Inventors:
WAN XIAOYUE (CN)
XU ZICHEN (CN)
XU ZICHEN (CN)
Application Number:
PCT/CN2022/113057
Publication Date:
February 23, 2023
Filing Date:
August 17, 2022
Export Citation:
Assignee:
WAN XIAOYUE (CN)
International Classes:
E21B31/00; E21B17/04; E21B19/22
Foreign References:
| CN113653445A | 2021-11-16 | |||
| CN216381353U | 2022-04-26 | |||
| CN105239929A | 2016-01-13 | |||
| CN209277811U | 2019-08-20 | |||
| CN106246106A | 2016-12-21 | |||
| CN104405287A | 2015-03-11 | |||
| CN106437518A | 2017-02-22 | |||
| EP0333484A2 | 1989-09-20 | |||
| RU2148144C1 | 2000-04-27 |
Attorney, Agent or Firm:
HAIHONG JIACHENG INTELLECTUAL PROPERTY & PARTNERS (CN)
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