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CDHP 12-1/4" PDC Drill Bits S123 PDC Bits for Offshore Drilling

Bit Size 12 1/4"(311.15mm)
Bit Connection 6 5/8"
IADC Code: S123
Blade Count 4pcs
Primary Cutter 19mm
Nozzles 6pcs
Junk Slot Area (in2) 39.5
Bit Rotary Speed (rpm) 60~260
Weight-On-Bit (KN) 30~140
Flow Rate (lps) 35~68

Application

Very soft, soft and medium soft formation of low resist compression strength, or hard interlayer, such as anhydrite, cotton rock, sandstone and so on.

Feature

Balanced force design of spiral blades endows the bits with good orientation,little radial vibration as well as ability to increase cutter placement

The reasonable layout of patented PDC cutters in various structures at different locations endows the bits with strong aggressiveness and anti-abrasiveness

An increased junk-slot area, due to greater blade height, promotes efficient cuttings evacuation away from the bit face.

Steel construction allows the bit's body diameter to be minimized, which combats bit balling.

Advanced hydraulics delivers maximum cutting-structure cleaning and junk-slot flow.

Optional premium PDC cutters for improved durability for abrasive formations.

Optional anti-balling metallic coating electrochemically applied to the surface of the bit body which reduces the surface roughness and friction. This greatly helps to prevent cuttings from sticking and reduces the likelihood of bit balling.

Changeable nozzle brings convenient repairable to save drill bit cost.