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Technical Specifications


14 3/4 RS35

Diameter: 374.6mm (14 3/4")  
IADC Code: 545X  
Design number: UT155  
State standard designation: СЗ-ЦГВУ  


Gradient angle of axle journal 36°
Axle journal offset relative to drill bit axis 6.40 mm
Bearing type Roller bearing
Sealing Elastomer
Total number of inserts (inner/heel row) 231 (169/62)
Total number of insert rows (inner/heel row) 15 (12/3)
Number of changeable nozzles 4
Connecting thread З-177 (7 5/8 REG)
Drill bit net weight, kg 144.50
Drill bit gross weight, kg 148.90

Recommended Drilling Conditions

Rotation speed 300-40 rpm
Thrust load 16.00-26.00 t (35200 - 57200 lbs)
The lower level of rotation speed value corresponds the upper level of thrust load value and vice versa.



Design Features


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