The series of bit is suitable for slim hole drilling operation
such as sidetracking and recently operations.
The size range of YC series bit is from 3 1/2 to 6 1/2 inch ,and
IADC varies from **7 to **7.For example 4 5/8 YC**7
MAIN STRUCTURE FEATURES
1.With
particular structure of the cone, equal worn of the compacts in
permanent contact area and alternative contact area of the bit is
realized.
2.Wear
resistance of the cutting structure is enhanced by setting
PDC cutters in the permanent contact area of the cone where
compacts are most severely worn.
3.Optimized
hydraulics structure improved the cleaning abilities by stetting
active cutting conical spherical gage compacts on head body.
