Drill bit having replaceable nozzles directing drilling fluid at a predetermined angle
US4582149A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1983 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Oct 31, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A nozzle system for a rotary drill bit comprising a plurality of elongate nozzle members detachably secured in drilling fluid exit bores in a drill bit body, each nozzle member having passaging therein, the lower portion of which is angled relative to the longitudinal axis of the nozzle member, and a projection and recess arrangement for holding each nozzle member in its bore in a predetermined angular position for directing the drilling fluid to flow in a stream along a line at a predetermined angle and in a predetermined position relative to an adjacent roller cutter of the drill bit for improved cleaning of the cutting elements and the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.