One trip flow tube exercising tool
US7347268B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2005 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Nov 3, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flow tube exercising tool and method for use are described for actuating the flow tube of a downhole safety valve in order to remove build ups of scale and debris from the safety valve and ensure proper operation. The exercising tool provides an engagement portion that underlies the lower end of the safety valve flow tube so that upward movement of the exercising tool will move the flow tube upwardly. Hydraulic fluid is then provided to the safety valve hydraulic controller to move the flow tube downwardly. Only a single trip of the flow tube exercising tool is necessary to accomplish multiple upward and downward movements of the flow tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.