Method for removing gravel pack screens
US6729407B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Sep 10, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of removing a gravel packed screen to reach another zone is described. The method involves a bottom hole assembly comprising an isolation device for the screen and a tool to latch on to it. A perforating gun is shot off to put holes in the screen to allow gravel to come through. A flow through a reversing valve is initiated to urge the gravel into the newly perforated screen while a vibrator shakes the screen and stimulates gravel flow through the screen. Alternatively, the screen is not isolated and a reverse circulation from the surface in conjunction with vibration urges the gravel to flow through the screen and out through the tubing supporting the bottom hole assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.