Modular system for a back reamer and method
US8177000B2 · kind B2 · utility
20Cited by
7References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Aug 4, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/86
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A modular back reamer to be used in subterranean drilling includes a drive stem connected to a drill string and configured to support a reamer body, the reamer body providing a plurality of receptacles, wherein the receptacles are configured to retain a cutting leg assembly at varying heights within a predetermined range, and a plurality of shims engaged within the receptacles to secure the cutting leg assemblies at a specified height within the predetermined range, wherein the cutting leg assembly is secured to the reamer body with at least one mechanical fastener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.