Methods of and apparatus for casing a borehole
US7178601B2 · kind B2 · utility
19Cited by
10References
37Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Jan 14, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods of and apparatus for drilling, casing and/or completing a borehole wherein one or more portions of the borehole are drilled into a formation at a single diameter along the entire length or depth of the or each portion of the borehole. An expandable tubular member is then located within the or each portion of the borehole and radially expanded in the or each portion to line and/or case it or them. Optionally, a corrosion resistant member and/or a service string can be located in the borehole. An advantage of certain embodiments is that a single diameter borehole is formed along the entire length or depth thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.