Fluid jet drilling nozzle and method
US4306627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1979 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Feb 21, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fluid jet drilling nozzle and associated drilling method. The nozzle is adapted to be connected to a source of high pressure fluid and to be rotated about a rotation axis, and comprises a body formed so that it partially encloses a cavity, which cavity is in fluid communication with the source of high pressure fluid when the nozzle is connected to such source. The nozzle further comprises means for allowing high pressure fluid in the cavity to exit the nozzle in the form of a high velocity fluid jet which intersects the axis of rotation of the nozzle. Such a nozzle may be mounted in any drilling apparatus capable of supplying high pressure fluid to the cavity and of rotating or oscillating the nozzle about its rotation axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.