Title:
HYBRID ROTARY STEERABLE DRILLING SYSTEM CAPABLE OF EASILY DEFLECTING
Document Type and Number:
WIPO Patent Application WO/2020/244671
Kind Code:
A1
Abstract:
Disclosed is a hybrid rotary steerable drilling system capable of easily deflecting, comprising a front bearing main body (1), a weight on bit and torque deflection transfer pup joint (2) and a deflection control system (3), wherein the weight on bit and torque deflection transfer pup joint (2) comprises a universal joint (21); the front end of the front bearing main body (1) is fixedly connected to a drill bit (11), and the rear end thereof is fixedly connected to an output end of the universal joint (21); the circumferential surface of the front bearing main body (1) is provided with a front biasing assembly (4); and the deflection control system (3) controls a radial biasing member (41) of the front biasing assembly (4) to bias a borehole wall in a radial direction of the front bearing main body (1), so that the front bearing main body (1) generates a deflection angle relative to an input shaft (212) of the universal joint (21) by taking the central point position of the universal joint (21) as a center, so as to control a drilling direction, thereby improving the deflection rate.
Inventors:
WAN XIAOYUE (CN)
XU ZICHEN (CN)
XU ZICHEN (CN)
Application Number:
PCT/CN2020/094998
Publication Date:
December 10, 2020
Filing Date:
June 08, 2020
Export Citation:
Assignee:
WAN XIAOYUE (CN)
International Classes:
E21B7/06; E21B17/10; E21B47/022
Foreign References:
| CN110617011A | 2019-12-27 | |||
| US20160108679A1 | 2016-04-21 | |||
| US20160108679A1 | 2016-04-21 | |||
| CN102947533A | 2013-02-27 | |||
| CN107676040A | 2018-02-09 | |||
| CN107939291A | 2018-04-20 | |||
| CN109458134A | 2019-03-12 | |||
| CN109690014A | 2019-04-26 | |||
| US20160326804A1 | 2016-11-10 | |||
| US20120160565A1 | 2012-06-28 | |||
| US5553679A | 1996-09-10 |
Other References:
DESHUAI ZHENGDELI GAOJIANGPENG FENGHONGBAI ZHANG: "Studies on Building-up Performance of Push-the-Bit and Point-the-Bit Rotary Steerable Tools", OIL DRILLING & PRODUCTION TECHNOLOGY, vol. 33, no. 6, 2011, pages 10 - 13
See also references of EP 3981945A4
See also references of EP 3981945A4
Attorney, Agent or Firm:
BEIJING HAIHONG JIACHENG INTELLECTUAL PROPERTY & PARTNERS (CN)
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