Steerable fluid hammer
US6659202B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Jul 30, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B4/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and method for directional drilling utilizing a fluid hammer. The fluid hammer is coupled to a bent steering member which, in turn, is coupled to a drill string. The bent steering member includes means for rotating the fluid hammer independently of the bent steering member. The means for rotating may be a mud motor or a dual drive, pipe-in-pipe mechanism. The fluid hammer may be directed by rotating the drill string and bent steering member to point the fluid hammer in a desired direction. The bent steering member may include a sonde for monitoring its orientation. Fluid pressure capable of activating the fluid hammer is conveyed to the fluid hammer by means of the drill string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.