Downhole operational tool
US10557312B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2017 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Jun 11, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/112
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a downhole operational tool for moving a tool part between a retracted position and a projected position in a well. The downhole operational tool comprises a tool body having an axial extension; the tool part being movable perpendicularly to the axial extension between the retracted position and the projected position; a projection actuator configured to project the tool part from the tool body by means of hydraulics, the projection actuator comprising an actuator housing and a projection piston configured to slide inside the actuator housing, the tool part being connected with the projection piston; and a retraction actuator comprising a spring element configured to retract the tool part into the tool body, the retraction actuator being connected with the projection piston so that when the projection actuator projects the tool part, the spring element is compressed. The spring element is arranged outside the actuator housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.