Downhole tool string
US10526845B2 · kind B2 · utility
2Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2016 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Apr 8, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool string comprising a motor unit (3) having a rotational shaft rotating with a rotational motor speed; a gear section; an operational tool having a tool shaft rotated by the gear section (5) at a lower rotational speed than that of the rotational shaft; and a pump unit (8) having a rotor shaft rotated by the motor unit (3) for providing fluid around or past an operational tool (6). The pump unit (8) is arranged between the gear section (5) and the operational tool (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.