Control of well tools utilizing downhole pumps
US8453723B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2010 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Feb 10, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of selectively actuating from a remote location multiple downhole well tools includes: selecting one of the well tools for actuation by applying a voltage polarity to a set of conductors in the well, thereby operating a downhole pump connected to the well tool and displacing a piston of the well tool in one direction; and selecting the well tool for actuation by applying an opposite voltage polarity to the set of conductors, thereby operating the downhole pump and displacing the piston in an opposite direction. A system includes multiple electrical conductors in the well; and multiple control devices that control which of the well tools is selected for actuation in response to current flow in a set of the conductors, each of the control devices including at least one downhole pump which applies a pressure differential to an actuator of a respective one of the well tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.