13 5/8″ CHJ547WLY

 

Specifications

Size: 13 5/8″ (346.1 mm)
IADC: 547
Bearing & Seal: Journal Bearing / Metal seal
Number of Rows: 5-4-4
Inner Row: Conical / 119 pcs
Gauge Row: Wedge / 58 pcs
Trimming Row:
Bevel Row: Ovoid / 116 pcs
Bit Weight: 40
Weight on Bit: 0.13~0.35
ROP: 60~160

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Application
This product is used for cutting parts of roller cone reamers, which can be used for trenchless horizontal drilling and shaft drilling.

Formation
Suitable for low compressive strength, medium soft, and hard abrasive interbed formations, such as hard shale, anhydrite, soft limestone, sandstone, dolomite with interlayers, etc.

Features
– With new journal bearing structure which greatly prolongs the service life of the bearing, and has the ability to withstand high drilling pressure and adapt to high rotational speed.
– A new type of metal sealing structure is adopted to improve the bearing life and sealing reliability of the drill bit.
– Y feature, the main cutting teeth of the cone are conical teeth, which have strong fracture resistance and formation penetration ability, and are suitable for drilling in hard and brittle formations and gravel interlayers.