Hole opener and drillable casing guide and methods of use
US7258165B1 · kind B1 · utility
10Cited by
5References
18Claims
0Family size
Inventor
Key dates
| Filing date | Jan 15, 2005 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Oct 10, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A down-hole tool guide is disclosed for deflecting various down-hole tools having a tendency to hang or bind in uncased bore holes. The down-hole tool guide or ball guide assembly, being adaptive to the down-hole tools, extends forwardly there from and includes an eccentric rotatable ball and high-pressure jets. In cases where the guide is used to guide casing, the ball guide assembly is constructed from a drillable material thereby allowing the hole bore to be extended beyond the last set casing depth without side deviation from the original bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.