Title:
FLEXIBLE ELECTRICAL CONNECTION DRILL STRING
Document Type and Number:
WIPO Patent Application WO/2022/105791
Kind Code:
A1
Abstract:
A flexible electrical connection drill string, comprising a plurality of flexible electrical connection drilling rods connected from end to end, the electrical connection drilling rods at least comprise a plurality of pup joint units (1), lower connectors (2), lower electrical connection members (3), upper connectors (4), upper electrical connection members (5), and an electrical circuit (6); the pup joint units at least comprise a variable angle weight-on-bit torque transmission mechanism (7) which enables the flexible electrical connection drill string to steadily transmit drilling power under conditions that allow for deflection; and through structures are provided inside the pup joint units and inside the variable angle weight-on-bit torque transmission mechanism comprised in the pup joint units. By means of providing the weight-on-bit transmission mechanism and the torque transmission mechanism, the flexible electrical connection drill string transmits the weight-on-bit and torque of a directed drilling tool, respectively.
Inventors:
XU ZICHEN (CN)
ZHENG KAI (CN)
WAN XIAOYUE (CN)
YANG ZHONGHUA (CN)
ZHENG KAI (CN)
WAN XIAOYUE (CN)
YANG ZHONGHUA (CN)
Application Number:
PCT/CN2021/131198
Publication Date:
May 27, 2022
Filing Date:
November 17, 2021
Export Citation:
Assignee:
WAN XIAOYUE (CN)
International Classes:
E21B7/06; E21B17/02; E21B17/16
Foreign References:
| CN111827884A | 2020-10-27 | |||
| US20180202239A1 | 2018-07-19 | |||
| CN101078335A | 2007-11-28 | |||
| CN112392410A | 2021-02-23 | |||
| CN107165575A | 2017-09-15 | |||
| CN101294480A | 2008-10-29 | |||
| CN104251122A | 2014-12-31 | |||
| KR20100127588A | 2010-12-06 |
Attorney, Agent or Firm:
HAIHONG JIACHENG INTELLECTUAL PROPERTY & PARTNERS (CN)
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