Interventionless oil tool actuator with floating piston and method of use
US7303020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2005 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Sep 24, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An interventionless actuator for oil well tools is described wherein the actuator comprises at least one floating piston adapted to equalize a pressure differential and lock onto an actuating member. An interventionless actuator is described that is charged to an initial energy level less than the expected at-depth well pressure and then recharged down hole to approximately the at-depth well pressure by a floating piston. At the time of desired interventionless actuation, the actuator is overcharged to a pressure greater than the at-depth well pressure, which pressure is reacted by an actuating piston to generate an actuating movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.