Jetting tool for well cleaning
US6062311A · kind A · utility
39Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1997 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Dec 10, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for cleaning subterranean wellbores is described. The apparatus comprises a sleeve member which is fixed to a part of the drillstring and a rotatable jet head with nozzles through which an abrasive fluid is discharged. The nozzles are mounted such that the fluid jet is directed to an area of the wellbore immediately adjacent to a leading edge of the sleeve. The nozzle head is restricted in its protrusion out of the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.