What are the characteristics of PDC drill bits?

In recent years, with the wide application of, PDC drill bits have been improved greatly in type and quality, and have been gradually used in soft-hard formations and achieved better economic benefits. In order to better use PDC drill bits and maximize their advantages.First of all, we should have a preliminary understanding of PDC drill bits.

The polycrystalline diamond composite bit was invented in 1973 in the U.S.A. It is widely used in soft-medium-hard formations abroad, and was firstly used in deep wells and marine drilling in the Middle East and North Sea to obtain high well footage and high drilling speeds, which greatly shortened the construction period and reduced the cost of drilling, and was widely emphasized in the drilling community, becoming a major achievement in the field of drilling, and triggering a great deal of attention and interest to PDC drilling in the country. As drilling technicians recognize and practice the PDC drill bit, it is gradually achieving better results in use.

PDC drill bit is a polycrystalline diamond composite piece drill bit, which is made of diamond as raw material by adding viscous agent and firing it at high temperature. The composite piece is in the form of a round slice, and on the basis of the structure of cemented carbide indexable insert drill bit, it increases the high-speed steel center bit and becomes, which is specially used for the processing of large hole diameters, and it does not need to ream out the holes step by step, and it can reach the required size at one time.

Because PDC drill bit is a special super-hard material synthesized by synthetic diamond and cemented carbide under high temperature and high pressure, it not only has the characteristics of high hardness and wear resistance of diamond, but also has the characteristics of strong impact and big edge of cemented carbide, etc. Using it as the cutter wing of the drill bit can greatly improve the working efficiency of the drill bit, and it is the ideal drill bit for drilling into the medium-hard and hard rock formations.

PDC drill bit has the following structural features:

1. Integral type, no moving parts, good stability

A diamond drill bit is a type of integrated drill bit, mainly composed of the drill body, hydraulic structure, crown, blade and diameter protection, etc. The entire drill bit has no moving parts. The crown of a diamond drill bit is a part of the rock that is the main chip, embedded with the surface of teeth cut from diamond material, and then connected through hydraulic structures and threads, making it a diamond drill bit without moving parts and with better stability as a whole. This is also one of the reasons why this can be widely sold and deeply used by users .

2. The main body of the drill bit is made of steel, with strong crushing force

The diamond drill bit is made of steel, in the process of using, the multiple diamond particles on the surface of the drill bit can act on the rock at the same time, and produce plastic flow or fracture under the action of torque, so as to achieve the purpose of cutting. Especially when used in brittle substrates, the diamond bit adopts a "crushing" method.

Under the action of pressure and torque of the drill bit, the rock stress is opened up, thus forming a groove on the backside of the diamond movement, generating a crushing force, and thus fast operation.

Based on the above characteristics, PDC drill bits are very practical and are used in coal field, oil drilling, water conservancy and hydropower, railroad and highway, tunnel construction and other industries.

After reading this article, is not the PDC drill bit already have a preliminary understanding? If you still need to know in detail, please contact us!