Polycrystalline Diamond Compact Bit

Polycrystalline diamond compact drill bits is also named PDC bits, diamond bits. Base on the difference in raw materials, it has Matrix body bit and Steel body bit. You can contact with our sales representative for more about the details production line. GREAT can manufacture the sizes from 3'' to 36'' with its advanced CNC machines, according to the drilling formation designed 3blade to 9blades with a single row or double row. Until now, it is popularly used for Oil and Gas exploitation, Geothermal well drilling, Reverse circulation drilling, Horizontal Directional Drilling.

How Many Types of Drill Bits？

Two types: matrix pdc drill bits and steel body pdc drill bits.

Matrix body is made by Matrix powder in the sintering furnace, it is more wear resistance and abrasive than Steel body, used for deep oil and gas exploitation.

Steel body is made by AISI 4145H steel and heat treatment, the delivery time is faster and easier to repair. You will never worry about the blade being broken.

IADC Code for PDC Bits

IADC classification: PDC bits

The first character is bit body structure:

--> M: Matrix Body

--> S: Steel Body

--> D: Diamond

The second character is used for soft to hard formation type :

--> 1: Very Soft.

--> 2: Soft.

--> 3: Soft to Medium

--> 4: Medium to hard

The third character is PDC cutter structure :

--> 1: Cutters bigger 19mm .

--> 2: Cutters 19-13mm (including 19mm).

--> 3: Cutters 13-8mm (including 13mm) .

--> 4: Cutters smaller than 8mm .

The fourth character is bit profile :

-->1= fishtail PDC bit

-->2= short bit profile

--> 3= medium bit profile

--> 4= long bit profile

See Nomenclature sheet GREAT PDC bits at the end of this article.

What Are the Benefits of PDC Bits?

1: PDC bits are one part (it is also named Fixed cutter bits), there are no moving parts like tri-cone drill bits and No structural weaknesses, therefore it can bear higher ROP, and used for high-speed downhole motor and RSS application, achieve high efficiency. In the directional drilling process, it can bear a large lateral load without downhole accident, suitable for directional drilling;

2: PDC bits are wear-resistant and have a working life, suitable for deep well drilling and abrasive formations.

3: In the case of high temperature in the well, the bearing seal of the roller cone bit is easy to fail, but the problem does not appear when the diamond bit is used. So you will never worry use PDC bits in deep well drilling .

4: In drilling Wells smaller than 165.1mm(61/2inch), the roller cone bit's bearing suffers from strength and performance due to the spatial size limitation. PDC bits are not problematic, so PDC bits should be used in small-hole drilling.

5: PDC bits operate at lower weight one bit (WOB) than roller cone bits, so PDC bits should be used in situations where weight on bit is limited, such as to prevent oblique drilling.

6: PDC bits are flexible in structure design and manufacturing and simple in production equipment, so they can meet the requirements of non-standard sizes. Great have advanced CNC machines to manufacture PDC bits.

7: The PDC bit is a kind of cutting bit, the PDC cutters have the advantage of self-sharpening when the rock is broken, there is no pressure holding effect of roller cone bits , the cutting area of the PDC cutters is large, it is a kind of high-efficiency bit. Practice shows that this kind of bit can get the high benefits when adapting to the formation.

8: Due to the limited thermal stability of PDC bits, adequate cleaning and cooling must be ensured during operation.

9: PDC bits have poor impact load resistance, so strict operation rules must be followed when using them. Every GREAT PDC bits provides instructions to guide the customer to use the bit better.

We are more professional :

1: Choosing AISI 4145H steel and heat treatment, hardness and toughness are improved at least 35%.

2: Premium customized PDC cutters.

3: Perfect after-sales service system, engineers to provide technical services.