Tubular drill string component and corresponding drill string
US9291004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2010 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | May 12, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/023
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Tubular drill string component for drilling a hole with circulation of a drilling fluid around the component and in a direction going from a drill hole bottom to the surface. The component includes a first end including a female threading, a second end including a male threading, and a substantially tubular central zone. The component includes a communication tube arranged at least in the central zone and in contact with a bore of the central zone. A signal transmission cable is arranged in the tube. The communication tube includes a body formed from at least one metal strip arranged with an annular component. The body includes, in section along a plane passing through the axis of the tube, at least two axially elongated lengths, partially overlapping one another with an axial play selected to accommodate the maximum elastic deformation of the component under axial compressive and/or bending stress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.