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.

Other supplier products

	Roller Bit	As one of the rock drill bits manufacturersin China, Cangzhou Great Drill Bits Co.,Ltd.has customized several types of roller cone bits for salethr...
	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...
	Longer Working Life Hybrid Drill Bits Improve Drilling Effeciency	Overview of Hybrid Drill Bit Hybrid drill bits are compounded by the PDC fixed cutting and the roller free cutting structure. The teeth on the con...
	Hard Rock PDC cone bit Used for drill underground core	Overview of PDC Core Bit GREAT customized made Diamond core bits, which include Matrix body PDC bit and Steel body PDC bit, the Diamond core bit...
	Bi-center bit for Mining Machinery and abrasive formation	Overview of Bi centerBit This type of Bicenter bit mainly used for medium to medium-hard compressive and abrasive formation, it has medium and hig...

Same products

	Efficient Soldering with MaAnt M061 Gold-Plated Needle	Seller: Shenzhen Wikshu Technology Co.	MaAnt M061 Gold-plated Drag Tin Needles with Light Carbon Fiber Handle Set Uniform and Fast Fill ...
	High Hardness Linear Rail Flat Bed CNC Lathe	Seller: Zhejiang Guoyu CNC Machine Tool Co., Ltd.	It can cut all kinds of turning surfaces by bicycle, such as conical surfaces, special surfaces, ...
	Automation Suction Cups	Seller: Zhejiang Shijing Tools Co., Ltd. All Rights Reserved.	The ALUMINUM SUCTION CUP 6106 D is a versatile and reliable tool designed to handle various lif...
	Machinery	Seller: O&K GROUP LIMITED	Okwishing supplies all kinds of Machinery. Okwishing () is a cross-border e-commerce platform de...
	Mini Excavator Carrier Roller for Kobelco SK045/SK045SR/SK50SR/SK70SR	Seller: Xiamen Globe Truth (GT) Industries Co., Ltd	The carrier roller use 50Mn steel, after free forging into work-piece by a 560KG air hammer, comp...