Method and conduit for transmitting signals
US7413021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Nov 3, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0283
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An expandable tubular sleeve having utility for lining a downhole tubular member includes a tubular body having a portion that is predisposed to initiate expansion thereof under the application of internal fluid pressure. The predisposed portion of the body may be a plastically-deformed portion formed, e.g., by application of mechanical force to a wall of the body. The predisposed portion of the body may be defined by a portion of the body having reduced wall thickness. The reduced wall thickness may be achieved, e.g., by reinforcing the wall thickness everywhere except the predisposed portion. The predisposed portion of the body may be formed by modifying the material properties of the body, e.g., by localized heat treatment. The sleeve and related apparatuses and methods are useful for securing and protecting a cable having one or more insulated conductive wires for transmission of signals between locations downhole and at the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.