Multiple tube structure
US6729410B2 · kind B2 · utility
19Cited by
10References
65Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Mar 11, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/122
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multiple tube structure provides enhanced utilization of limited cross-sectional area in a wellbore. In a described embodiment, a tube system includes multiple tubular members rigidly attached to each other along axial lengths thereof. The tubular members are configured so that they conform to an interior of a generally D-shaped portion of a circle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.