Downhole self-propelling wireline tool
US12116854B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2022 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Oct 15, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole driving unit for propelling a tool forward in a well and/or for providing weight on a bit while performing an operation, includes a tool body, an electric motor powered by a wireline, a plurality of projectable arm assemblies connected in a first arm end with the tool body, a plurality of wheels for contacting a wall of the well, each wheel comprising a hydraulic motor for rotation of the wheel, each arm assembly being at a second arm end connected with one of the plurality of wheels, and a first hydraulic pump driven by the electric motor for generation of a first fluid pressure for projection of the plurality of projectable arm assemblies. The downhole driving unit further comprises a hydraulic section with a first controllable valve controlling the first fluid pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.