Signal operated tools for milling, drilling, and/or fishing operations
US8991489B2 · kind B2 · utility
50Cited by
49References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2009 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Aug 11, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/138
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mud motor for use in a wellbore includes: a stator; a rotor, the stator and rotor operable to rotate the rotor in response to fluid pumped between the rotor and the stator; and a lock. The lock is operable to: rotationally couple the rotor to the stator in a locked position, receive an instruction signal from the surface, release the rotor in an unlocked position, and actuate from the locked position to the unlocked position in response to receiving the instruction signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.