Cross-over tool
US7383884B1 · kind B1 · utility
7Cited by
9References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2005 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Sep 1, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well system comprising an improved cross-over tool is provided. The tool may comprise a debris shield for substantially preventing sand, proppant or other well debris from fouling a flow port closing sleeve located below the cross-over tool fracture ports; a return port cover adapted to close or open a return port upon contact with a designated downhole surface regardless of tubing movement caused by stretching or contracting under stress or other induced pipe movement from downhole conditions; or a collet-type circulation valve adapted to mechanically indicate the position or flow status of the cross-over tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.