.

Working Principle and Characteristics of PDC Bit

What Is a PDCBit

Working Principle and Characteristics of PDC Bit

PDC bit is the abbreviation of Polycrystalline diamond drill bit for china, also known as Polycrystalline diamond cutting block bit or composite chip bit. Because of its advantages of fast drilling speed, long service life and high footage pdc bit componentsare widely used in oil drilling.

PDC bit is composed of the bit body, PDC cutting teeth and nozzle. According to different structures and manufacturing processes, the PDC bit is divided into two series: steel body and matrix body.

The whole bit body of rigid PDC bit is made of medium carbon steel and formed by the machine manufacturing process. Drill holes on the working face of the bit, and fix PDC cutting teeth on the bit crown by pressing in and tight-fitting. The crown of a drill bit is treated by a surface hardening process (spraying tungsten carbide wear-resistant layer, carburizing, etc.) to enhance its erosion resistance. The main advantage of this kind of bit is a simple pdc bit manufacturing process, but the disadvantage is that the bit body is not erosion resistant and the cutting teeth are difficult to be fixed, so it is seldom used at present.

The upper part of the PDC bit is made of steel and the lower part is made of WC wear-resistant alloy. The pdc rock drill bitis made by powder metallurgy sintering process. The PDC cutting teeth are welded on the preformed groove of the carcass with low-temperature solder. Tungsten carbide matrix has high hardness and erosion resistance, so the matrix PDC bit has long service life and high footage, which is widely used at present.

PDC bit breaks rocks by cutting. The self-sharpening cutting teeth can easily cut into the formation under the action of WOB and move the shear rock forward under the action of torque. Many PDC cutting teeth work at the same time, there are many free faces of the bottom rock, and the rock is easy to be broken under the shear action, so the rock-breaking efficiency is high and the drilling speed is fast.

Diamond PDC bit has the best effect in large homogeneous soft to medium-hard formation. It is not suitable for drilling gravel layer and soft hard cross formation.

Drilling with low WOB, high rotation speed and large displacement has a good effect.

Before the bit is put into the well, the bottom of the well shall be clean to ensure no metal falls.

When the bit is just put into the well, it should adopt small bit pressure and low rotation speed to run and resume normal drilling after the bottom of the well is formed.

PDC bit is an integral bit, without any moving parts, suitable for high-speed turbo drilling.

As professional pdc cutter manufacturer, we have types of related products for sale, anything you need, please contact us.



Send product request

To: Cangzhou Great Drill Bits Co.,Ltd.
Your E-mail:
Message text:


Send to other suppliers

Other supplier products

Three Cone Drill Bit For Soft Formation for water well drilling
Three Cone Drill Bit For Soft Formation for water well drilling Overview of Steel Tooth Bit This superior method provides a stronger, more impact-resistant tooth than milling because the metal particle structur...
Steel Body PDC Bit
Steel Body PDC Bit The Steel body PDC bit body is made of AISI 4145H round steel. The cost of Steel body PDC bit is lower than that of Matrix body PDC bit. Every S...
Tricone Drill Bit For Hard Rock with tungsten carbide insert
Tricone Drill Bit For Hard Rock with tungsten carbide insert Overview of TCI Bit TCI Tricone bitis an important tool for oil drilling. When the cone bit is working, the cutting teeth alternately contact th...
Core barrel with high performance rock roller bit for Pile Foundation
Core barrel with high performance rock roller bit for Pile Foundation Overview of Roller Bit The roller bit core barreluses high carbon steel and a special bit Angle to maintain drilling strength and efficiency. ...
Single Cone Rock Roller Drill Bit for core barrel pilot bit
Single Cone Rock Roller Drill Bit for core barrel pilot bit Overview of Roller Bit As one of the drill bit manufacturers in China,Cangzhou Great Drill Bits Co.,Ltd.has customized several types of roller bit...
All supplier products

Same products

Fully automatic transparent film wrapping machine
Fully automatic transparent film wrapping machine Seller: Zhejiang Junwen Machinery Equipment Co., Ltd. This machine can add the two-side ironing mechanism, the steering mechanism, and the four-sid...
sewing spares
sewing spares Seller: Zhejiang Huaqi Information Technology Co., LTD Manufacturers also need to consider the quality of sewing spares when making their purchasing dec...
MaAnt BF-1 Blowing Suction Turbine Fan Dust Cleaner Gun
MaAnt BF-1 Blowing Suction Turbine Fan Dust Cleaner Gun Seller: PHONEFIX technology Co.,Ltd MaAnt BF-1 Blowing and Suctioning Turbofan Cleaning Gun is an efficient cordless handheld cleanin...
industrial sewing machine spares
industrial sewing machine spares Seller: Zhejiang Huaqi Information Technology Co., LTD Our spares are crafted from the highest quality materials to withstand the rigors of industrial u...
industrial sewing machine spares
industrial sewing machine spares Seller: Zhejiang Huaqi Information Technology Co., LTD At JINZEN, we take immense pride in our diverse and comprehensive product range, catering to ever...