Push type rotary guide drilling system
US11306540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2020 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jul 1, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/064
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A push type rotary guide drilling system includes a drill bit and a rotating shaft, the rotating shaft including an upper rotating shaft and a lower rotating shaft; a steering portion, sleeving an outer side of the rotating shaft; a push assembly, including a plurality of push pieces spaced along a circumferential direction of the steering portion; a transmission device, including a transmission mechanism for driving the push pieces to extend out of the steering portion, the transmission mechanism including a driving electromagnetic gear arranged on the upper rotating shaft and a driven electromagnetic gear arranged on the steering portion and further including a motion conversion unit converting rotary motion of the driven electromagnetic gear into linear motion of the push pieces; and a control unit. The control unit is configured to modulate a magnetic field to make the driving electromagnetic gear and the driven electromagnetic gear realize linkage through magnetic coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.