Liner top porous debris barrier
US10060224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Mar 17, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0021
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An annular space is made smaller with a hub on an inner member that supports a base ring from which extend bristles that are preferably wire whose proximity is close enough to retain debris from passing through while leaving sufficient fluid paths to allow fluid movement in opposed directions in response to relative axial movement of the components that define the annular space. In one application a running tool for a liner string that has a hanger/packer is contemplated. Movement of the running string after the hanger is set and the liner is released from the string keeps the barrier in the annular space while allowing movement of an initially inserted gel put there on assembly to migrate from the annular space through the debris barrier. The running tool can have a cap on the liner top that eventually is moved away as the running tool is picked up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.