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Technical Specifications
15 1/2 R35
Diameter:
393.7mm (15 1/2")
IADC Code:
543X
Design number:
UT274
State standard designation:
СЗ-ЦГВ
Specification
Gradient angle of axle journal
36°
Number of blades
0
Axle journal offset relative to drill bit axis
6.40 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)
183 (131/52)
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)
16 (13/3)
Number of changeable nozzles
4
Number of changeable nozzles
4
Connecting thread
З-177 (7 5/8 REG)
Connecting thread
З-177 (7 5/8 REG)
Drill bit height, mm
0.0
Drill bit net weight, kg
156.00
Drill bit gross weight, kg
160.40
Recommended Drilling Conditions
Rotation speed
600-40 rpm
Thrust load
17.00-29.00 t (37400 - 63800 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 medium hard abrasive formations
Design Features
Combined circulation (central and side), for which it is necessary to unscrew the screw from the central unit.
The leg shirttail and entering edge are hardfaced with tungsten carbide
Tungsten carbide inserts on cone gage.
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