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Technical Specifications

 

15 1/2 RS3

Diameter: 393.7mm (15 1/2")  
IADC Code: 135  
Design number: UT161  
State standard designation: МС-ЦГВУ  
 

Specification

Gradient angle of axle journal 33°
Axle journal offset relative to drill bit axis 10.00 mm
Bearing type Roller bearing
Sealing Elastomer
Total number of inserts (inner/heel row) 126 (68/58)
Total number of insert rows (inner/heel row) 9 (6/3)
Number of changeable nozzles 4
Connecting thread З-177 (7 5/8 REG)
Drill bit net weight, kg 150.00
Drill bit gross weight, kg 154.40
 

Recommended Drilling Conditions

Rotation speed 200-40 rpm
Thrust load 9.00-27.00 t (19800 - 59400 lbs)
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 soft formations with medium hard streaks
 

Design Features









 

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