FIELD: drilling of wells. SUBSTANCE: crown bit comprises body with multilayer diamond-containing matrix rigidly secured thereto and having working end face of rack-shaped cross section. Matrix is divided into segments by radial flushing slots. Inclusions of material under spaces of matrix working end face throughout matrix height are stronger than the diamond-containing layer. EFFECT: improved design. 2 dwg
Title | Year | Author | Number |
---|---|---|---|
DIAMOND DRILL BIT | 1991 |
|
RU2007542C1 |
DIAMOND DRILL BIT | 1991 |
|
RU2007541C1 |
DIAMOND DRILLING CROWN BIT | 0 |
|
SU1640341A2 |
0 |
|
SU1778264A1 | |
DIAMOND DRILL BIT | 0 |
|
SU1375785A1 |
DIAMOND CROWN BIT | 1999 |
|
RU2169249C2 |
DIAMOND DRILL BIT | 2010 |
|
RU2445438C2 |
DIAMOND CROWN BIT | 0 |
|
SU1716073A1 |
METHOD OF RESTORING DRILL BITS MADE OF DIAMOND-CONTAINING MATERIAL | 0 |
|
SU1717282A1 |
DIAMOND DRILL BIT | 1994 |
|
RU2087665C1 |
Authors
Dates
1994-11-30—Published
1990-03-11—Filed