Tigerrig SD Series Single Cone Bit
Features：
1.Cutting Structure
In response to the characteristics that inserts in different areas on the cone have different cutting actions, conical inserts are placed in permanent contact area and wedge inserts are placed in alternative contact area so that the drilling efficiency is greatly improved. Wear resistance of cutting structure is enhanced by setting diamond inserts in the permanent contact area of the cone where inserts are severely worn. Tungsten carbide inserts are placed on cone top face to protect cone body from abrasive erosion.
2.Gauge Structure
With active cutting gauge protection inserts on bit body, the bit has good gauge protection and updrill capacity.
3.Bearing Structure
High precision journal bearing. Balls lock the cone. Hardfaced head bearing surface. Cone bearing inlaid with friction- reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved. Compared with three cone bit, the leg bearing is bigger, so it can receive higher WOB and high reliability.
4.Hydraulic Design
Small angled watercourse design increased the shirttail thickness and can effectively prevent the watercourse erosion. Optimized hydraulics structure improves the cleaning capability and increases ROP.
5.Product Application
It is suitable for sidetracking, deep well drilling and old well repairing.
Current Availability
Bit Size
Bit Type
in
mm
4 1/8
104.8
SD527 SD547 SD617
4 1/2
114.3
4 5/8
117.5
4 7/8
123.8
5 1/2
139.7
6
152.4
6 1/2
165.1
7 1/2
190.5
77/8
200.0
8 1/2
215.9
Recommended Drilling Parameters
IADC
WOB
(KN/mm) (Bit Dia.)
RPM(r/min)
Applicable Formation
527
0.3~ 0.7
120~ 50
Soft formation with low compressive strength and high drill ability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
547
100~ 50
Soft to medium formations with low compressive strength, such as medium soft shale, medium soft limestone, medium soft sandstone, medium formation with harder abrasvier interbed, etc.
617
0.4~ 0.8
90~ 50
Medium hard formations with high compressive strength, such as hard shale, limestone, sandstone, dolomite, etc.