Gravel packing and perforating a well in a single trip
US5174379A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1991 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Feb 11, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/1193
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A new gravel packing system is provided whereby a well may be perforated, gravel packed and placed on production with a single trip of the tool string into the well. The system will include a crossover assembly which has a closure mechanism operatively associated therewith. The closure mechanism may be operated to preclude downward fluid flow through the crossover tool, to establish at least a portion of a downward gravel pack slurry flow path, and to establish at least a part of a carrier fluid return flow path. At the conclusion of a gravel pack operation, the closure member may be either withdrawn from the assembly or expelled to the bottom of the wellbore, leaving the tool to be placed on production without tripping the tool string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.