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Technical Specifications
8 1/2 MC60
Diameter:
215.9mm (8 1/2")
IADC Code:
612CX
Design number:
T187C
State standard designation:
ТЗ-ПВ
Specification
Gradient angle of axle journal
38°
Number of blades
0
Axle journal offset relative to drill bit axis
0.50 mm
Type of diamond inserts
Bearing type
Roller bearing
Total number of PDC inserts (cutting/gauge)
0 (0/0)
Sealing
None
Total number of PDC inserts for back reaming
0
Total number of inserts (inner/heel row)
0 (0/0)
Total number of inserts (inner/heel row)
125 (82/43)
Total number of antivibration inserts
0
Total number of insert rows (inner/heel row)
0 (0/0)
Total number of insert rows (inner/heel row)
12 (9/3)
Number of changeable nozzles
0
Number of changeable nozzles
0
Connecting thread
З-117 ук. (-)
Connecting thread
З-117 ук. (-)
Drill bit height, mm
0.0
Drill bit net weight, kg
35.00
Drill bit gross weight, kg
36.50
Recommended Drilling Conditions
Rotation speed
115-60 rpm
Thrust load
6.00-18.00 t (13200 - 39600 lbs)
Drilling fluid consumption
0.00-0.00 l/s
Recommended make-up torque
0.00-0.00 kNm
The lower level of rotation speed value corresponds the upper level of thrust load value and vice versa.
Purpose
The drill bit is designed for drilling hard abrasive formations
Design Features
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