FIELD: oil and gas production.
SUBSTANCE: ring bore bit of cutting type consists of case with connecting thread and is divided with flushing channels to sectors equipped with cutters. The cutters are reinforced with diamond-hard-alloy plates at negative front angles to end surface of well bottomhole. Replaceable diamond-hard-alloy plates are secured in cylinder slots with hold-down screws, which facilitates rearrangement of the diamond-hard-alloy plates and multiple usage of the bore bit.
EFFECT: minimum twice increased general service life of expensive tool compared to bore bit with soldered diamond-hard alloy plates.
5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CIRCULAR BORE BIT | 2007 |
|
RU2359103C1 |
| CROWN BIT | 2013 |
|
RU2551575C1 |
| CORE DRILLING BIT | 2010 |
|
RU2435927C1 |
| ANTI-VIBRATION RING DRILL CROWN | 2016 |
|
RU2613712C1 |
| STABILISING CORE BIT | 2015 |
|
RU2577351C1 |
| DRILLING BIT WITH WEDGE JOINT OF CUTTERS | 2014 |
|
RU2588524C2 |
| DRILL BIT WITH WEDGE CLAMP FOR CUTTERS | 2014 |
|
RU2574091C1 |
| CORE BIT | 2022 |
|
RU2792864C1 |
| MILLING CUTTER FOR CUTTING WINDOW IN CASING WHEN DRILLING SIDETRACK | 2023 |
|
RU2808788C1 |
| METHOD FOR OPERATION OF RECTANGULAR TWO-LAYERED PLATES IN ANNULAR DRILLING BITS | 2015 |
|
RU2631513C2 |
