Bore lining and drilling
US7004264B2 · kind B2 · utility
25Cited by
503References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Mar 14, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of lining and drilling a bore (10) comprises the steps of mounting a first section of bore-lining tubing (20) on the lower end portion of a drill string (18). The method also includes running the drill string and tubing into a bore having an unlined section and an existing tubing lined section, locating the first tubing section (20) in the unlined section, uncoupling the first tubing section (20) from the drill string (18), and drilling the bore beyond the first tubing section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.