Enhanced cross-flow with two jet drilling
US4189014A · kind A · utility
17Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1978 |
| Grant date | Feb 19, 1980 |
| Priority date | — |
| Expiry date | Aug 14, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit having three cone-shaped cutters is formed with two drilling fluid nozzles on opposite sides of one of the cutters and with an enlarged return passage for the drilling fluid being formed between the other two cutters. Flow restrictors adjacent the two nozzles restrict the flow of return fluid in those areas. A flow diverter in the dome area of the bit extends into the space between the cutters to better direct fluid across the bottom of the hole where cuttings are being generated by the cutter teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.