Gravel packing system
US5332038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1992 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Aug 6, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A gravel packing system in which the gravel screen and attached packer are anchorable in a well bore. A cross-over tool has an indicator device which cooperates with the gravel screen to provide surface indications of the downhole tool positions and the operation of a gravel valve. A setting tool can be used with the cross-over tool to set the packer and is releasable by hydraulic pressure. The setting tool and packer are releasably and co-rotatively coupled permitting right hand rotation while going in the well bore. The cross-over tool has a float valve which permits reverse circulation in low pressure wells. The packer has a release system for permitting retrieval of the packer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.