FIELD: oil and gas production.
SUBSTANCE: bore bit with filled oil filled support consists of case of welded sections of brackets, on journals of which there are movably fastened roller cutters with rock breaking teeth and cavities of bearing supports with sealing elements. The packing units are taken off zone of journals base into recesses made on ends of the roller cutters.
EFFECT: increased bearing ability of big friction bearing resulting in increased wear resistance of support and bore bit in whole.
3 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BIT WITH SEALED BEARING | 2009 |
|
RU2426859C2 |
| DRILL ROCK BIT WITH SEALED SUPPORT | 2009 |
|
RU2423598C2 |
| DRILLING BIT WITH SEALED BEARING | 2008 |
|
RU2389859C1 |
| DRILLING BIT WITH SUPPORT SEALING | 2004 |
|
RU2269635C1 |
| ROLLING DRILLING BIT WITH SEALED BEARING | 2008 |
|
RU2389860C1 |
| ROLLING DRILLING BIT (VERSIONS) | 2010 |
|
RU2437998C1 |
| SEALED BEARING STRUCTURE OF DRILLING BIT | 2011 |
|
RU2465428C1 |
| DRILLING BIT WITH SYSTEM OF LUBRICANT CONSUMPTION COMPENSATION IN ROLLER CUTTER SUPPORTS | 2010 |
|
RU2445435C1 |
| DRILLING BIT SEALED BEARING STRUCTURE | 2010 |
|
RU2430232C1 |
| DRILL BIT WITH BLOWING FACE BY AIR AND SEALING OF ROLLING CUTTER BEARINGS | 2011 |
|
RU2486329C2 |
