Title:
HYBRID ROTARY GUIDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/095525
Kind Code:
A1
Abstract:
A hybrid rotary guiding device, comprising: a rotating shaft that rotationally drives a tool head (B), the rotating shaft including an upper shaft part (1), a lower shaft part (2) and a steerable part (3); the upper shaft part (1) and the lower shaft part (2) have a spacing distance in the direction of the rotating shaft, and the upper shaft part (1) and the lower shaft part (2) are connected by means of the steerable part in a steerable manner (3); at least three first hydraulic mechanisms installed on the upper shaft part (1); and at least three second hydraulic mechanisms installed on the lower shaft part (2); the second hydraulic mechanisms are adapted to drive a push member (9) to push against a borehole wall to guide the tool head (B); the first hydraulic mechanisms and the second hydraulic mechanisms are connected such that the first hydraulic mechanisms can drive the second hydraulic mechanisms to drive the push member (9). The guiding device combines the advantages of the directional guiding and the pushing guiding, thus, the influence of formation properties on a build-up rate is eliminated to a great extent, a higher build-up rate can be provided, and the demand for energy consumption is greatly reduced.
Inventors:
LIU QINGBO (CN)
DI QINGYUN (CN)
WANG TSILI (CN)
CHEN WENXUAN (CN)
DU JIANSHENG (CN)
YANG YONGYOU (CN)
HE XINZHEN (CN)
LIU YANG (CN)
HONG LINFENG (CN)
XIE QIJUN (CN)
DI QINGYUN (CN)
WANG TSILI (CN)
CHEN WENXUAN (CN)
DU JIANSHENG (CN)
YANG YONGYOU (CN)
HE XINZHEN (CN)
LIU YANG (CN)
HONG LINFENG (CN)
XIE QIJUN (CN)
Application Number:
PCT/CN2018/000084
Publication Date:
May 23, 2019
Filing Date:
March 02, 2018
Export Citation:
Assignee:
INST GEOLOGY & GEOPHYSICS CAS (CN)
International Classes:
E21B7/06
Foreign References:
| CN107060643A | 2017-08-18 | |||
| CN105051316A | 2015-11-11 | |||
| CN205713975U | 2016-11-23 | |||
| CN104563867A | 2015-04-29 | |||
| CN102865038A | 2013-01-09 | |||
| US20170234115A1 | 2017-08-17 | |||
| CN104619944A | 2015-05-13 | |||
| US20140209389A1 | 2014-07-31 | |||
| US20170107762A1 | 2017-04-20 |
Other References:
See also references of EP 3611332A4
Attorney, Agent or Firm:
BEIJING ZLC INTELLECTUAL PROPERTY AGENCY LTD (CN)
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