Pdc Drilling Bit 17-1/2 Inch Borehole Enlargement Tool Of Oil Drilling Well

Pdc Drilling Bit 17-1/2 Inch Borehole Enlargement Tool Of Oil Drilling Well





1. Description :



Steel is the opposite of matrix. It can of withstanding high impact loads, but
is softer and lacks protective features. The strength and ductility of steel
give steel-bit bodies high impact resistance.



Steel bodies are considerably stronger than matrix bodies.

A beneficial feature of steel bits is that they can easily be rebuilt a number
of times because worn or damaged cutters can be replaced rather easily. This is
a particular advantage for operators in low-cost drilling environments.



2. Specification



SPECIFICATION
Size : 17-1/2 " (444.5mm)
Drill Body Type : Steel Body
Blades Quantity : 7
Nozzles Quantity : 11
API Connection (in) : 6-5/8" REG
Gauge Length (In): 3
OPERATIONAL PARAMETERS
Weight on Bit (KN): 67- 200
RPM Range(Rotary): 100-DTH
Flow Rate(lps): 57- 76
Make-Up Torque(KN): 46-54




3. Bit Profile
Pdc Drilling Bit 17-1/2 Inch Borehole Enlargement Tool Of Oil Drilling Well 0

4. Drill Bit PDC Cutters



Polycrystalline Diamond Composite (PDC) cutters are the main point of contact
for a drill bit. PDC bits remove the rock mainly by shearing.

The PDC cutters are exposed to a lot of heating and cooling down the well, a
very challenging environment.

PDC cutters that have lower thermal degradation and more thermal stability
generally achieve higher ROP and increased wear resistance. So, optimizing the
cutter is important.



5 . Drill Bit Nozzles



Drill bit nozzles help clear the cutting area and cool the Polycrystalline
Diamond Composite (PDC) cutters.

Effective placement of these nozzles along with the angle they are set at plays
a critical role on how efficient the drill bit performs.

Fluid channels also complement nozzle placement to improve the clearing of
cuttings.



6. Matrix Body



Matrix is a very hard, rather brittle complex material containing tungsten
carbide grains bonded with a softer, tougher, metallic binder.



The hardness of a matrix-body PDC has the benefit of not being susceptible to
abrasion and erosion. It is effective in tolerating high compressive loads,
but, compared with steel, has low resistance to impact loading.



Matrix-body PDC bits are relatively diverse, because matrix is a compounded
material.

In environments in which body erosion is likely to cause a bit to fail, matrix-
body PDC are the preference over steel-body bits. For diamond-impregnated bits,
only matrix-body construction can be used.



Pdc Drilling Bit 17-1/2 Inch Borehole Enlargement Tool Of Oil Drilling Well 1

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