Actuator for downhole tools
US8016026B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2008 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | May 28, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus, method, and system for actuating a wellbore tool includes a body having a chamber in which a movable member is disposed. The movable member may connect to a selected wellbore tool. Within the chamber is a controllable fluid that substantially prevents relative movement between the body and the movable member when exposed to an applied magnetic field. A generator applies the magnetic field to the fluid and may change the applied magnetic field in response to a first control signal to release the movable member from the body. A driver displaces the movable member relative to the body once the movable member is released from the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.