FIELD: mining, fork-type rotary drill bits, for instance fish tail bits with detachable blades adapted to drill water, drainage, seismic and other technical wells.
SUBSTANCE: auger bit comprises body and blades installed on the body and extending at positive angle from the body. The blades are reinforced with rock-cutting members. Half of front edge of peripheral part of each blade facing well face lies in plane inclined at 15-20° angle to plane defined by front edge of inner blade part and is opposite to bit rotation direction.
EFFECT: increased operational efficiency.
2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BLADE CHISEL | 2003 |
|
RU2243347C1 |
| BLADE DRILL BIT TO DRILL ROCK HAVING ALTERNATING RIGIDITY | 2006 |
|
RU2315850C1 |
| BLADE DRILL BIT | 2004 |
|
RU2274722C1 |
| DRILLING CUTTING BIT | 2015 |
|
RU2582357C1 |
| ROCK CRUSHER | 2014 |
|
RU2569117C1 |
| APPARATUS FOR DRILLING WELLS | 0 |
|
SU1548399A1 |
| METHOD OF DRILLING HOLES IN LOOSE ROCK WITH BOULDER AND GRAVEL INCLUSIONS | 0 |
|
SU1117388A1 |
| METHOD OF WELL-DRILLING WITH SIMULTANEOUS CASE AND FACILITY FOR ITS IMPLEMENTATION | 2007 |
|
RU2338051C1 |
| ROLLING DRILLING BIT | 2012 |
|
RU2623372C2 |
| DRAG-DRILLING BIT | 2005 |
|
RU2300621C2 |
