Apparatus and method for controlling multiple downhole devices
US9470062B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2014 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Dec 13, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/128
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool for use in a wellbore and that is attached to a perforating string that creates perforations in a portion of the wellbore. Where the downhole tool can selectively flow fluid from the perforating string to surface, or circulate flow from surface to an annular space between the tool and a wellbore wall. The tool includes pressure actuated valves that provide the flow diverting functionality. The valves are in cooperation with one another to prevent fluid from the portion of the wellbore having the perforations from flowing into the annular space. A pressure actuated selector assembly, which is made up of a piston and specially configured mandrels that are coaxially stacked, selectively moves separate mandrels in an axial direction for opening and closing the valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.