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8 1/2 Inches PDC Drill Bit M137 for Very Hard Rocks Drilling

Summary information
8 1/2" PDC bit M137
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API Certified factory of Tricone Bits and PDC bits
API is American Petroleum Institute, it is Authoritative in the world.
All products are produced in lines of API specifications.

Products Speification              
                                      Number of Blades 7
                                    Primary Cutter Size 13mm
                                                 Nozzle Qty. 6NZ
                                            Gauge Length 2.2 Inch
Operating Parameters  
                                                RPM (r/min) 60~260
                                                   WOB(KN) 20~100
                                           Flow Rate (lps) 22~35
                                                Application Medium-hard to hard formations with low
compressive strength , such as hard shale,
limestone, sandstone, dolomite, hard gypsum,
marble, etc.
                                                  Features The M137 is a matrix body PDC bit with 7
curved blade with back-reaming and spiral
gauge protection. Optimized Hydraulie design
and enhanced cleaing and cooling effects of
the bits to prevent bit from balling


Regular sizes of PDC cutters are 8mm, 13mm, 16mm, 19mm.


Regular blades quantities of PDC bits range from 3 to 9.


The smaller PDC cutters the harder rocks it can drill, the more blades quantity the harder it can drill. But penetration rate will be slower down after adopting smaller cutters and more blades, so choosing the best configuration of PDC bits is very important before starting projects.


Drillers should consider:


1> Matrix body or steel body.


2> Cutter sizes and blades quantity.


3> Double rows cutters or single row.


4> Spiral or normal gauge protection, gauge length, gauge protection materials.


5> Nozzles.




Regular Models

8 1/2"(215.9mm) IADC537G 8 1/2"(215.9mm) IADC637G 12 1/4"(311.1mm) IADC537G
6"(152.4mm) PDC Bit 12 1/4"(311.1mm) PDC Bit Bi Center Bit
24" Hole Opener 36" Hole Opener 44" Hole Opener
14" PDC Reamer 18" PDC Reamer HDD PDC Reamer
Tricone Bit Thirds Block Roller Bits Block Roller Bits
Roller Cone Bits for Piling Replaceable Roller Cone Bits Core Barrel



Oil/Gas Well Drilling-Water Well Drilling-HDD(Trenchless)-Foundation Piling

TCI Roller


Our Mission:
Lower the cost of Drilling-Per-Meter.

Who we are:
To exploit energy resources underground.
To exploit water underground.
To install pipelines underground with No-Dig.
To pile foundation for constructions.
We are one of the people who makes above easier.
Let’s work together and enjoy this job.


Related Catagories

TCI Roller TCI Roller TCI Roller TCI Roller
PDC Bits Hole Opener  Roller Cones (Thirds) Piling Roller Cones


TCI Roller


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