You must know these skills when buying active drill pipes!

Drill pipe is the basic component of drill string. Its main function is to transmit torque and transport drilling fluid, and the wellbore is continuously deepened by the gradual lengthening of the drill pipe.
The buying skills of drill pipes are actually very simple. As the saying goes, “snake a snake and hit seven inches”. Although this proverb is not appropriate to use here, the meaning of solving problems and grasping the key is particularly reasonable. The key issue of drill pipe purchase can be started from the reason of drill pipe fracture and failure, and then master how to distinguish the quality of drill pipe when purchasing.
1. Regarding the common causes of drill pipe fractures, professionals from Ningbo Zhedong Geological Equipment and Drilling Tool Brand have summarized the following points for everyone: 1. The drill pipe has been used for too long, and there are many surface damages, which are close to or exceed the fatigue life. Ningbo Zhedong Geological Equipment reminds you to avoid the use of scratched drill pipes, and to replace new drill pipes in time when there is loss. 2. The material and thickness of the drill pipe body do not meet the requirements of the technical specifications. When purchasing, you should choose the best brand drill pipe, and the quality is guaranteed. 3. When reaming a hole or drilling a pilot hole for a long distance, the drill bit suddenly hits a hard object and produces a strong impact force, resulting in a sudden increase in torque, causing the drill pipe to break or twist. Ningbo Zhedong Geological Equipment reminds the operator that the rotation speed and propulsion force should be reasonably controlled when operating the drilling rig to avoid such situations, drilling, pressurizing, and forward drilling at a suitable rotation speed. 4. If the curvature radius of the construction hole exceeds the parameter of the minimum curvature radius of the drill pipe, it is necessary to control the minimum curvature radius of the construction hole.
5. Improper daily preservation, placement and maintenance of the drill pipe will cause the drill pipe to rust, corrode or deform and bend, which is also an important reason for the damage to the performance of the drill pipe and easy failure. 6. The torque of the drilling rig is greater than the torque borne by the inclination of the drill pipe. Therefore, we need to configure the appropriate drill pipe for the drilling rig. 7. Align the hole position. Do not form the operation of the drill pipe, but be careful not to "do" the drill pipe. 8. Drilling. Under the action of the gravity of the drill pipe and the drilling tool, the process of overcoming the friction force of the hole wall and the buoyancy of the mud to realize the extension of the drill pipe is called dredging. The correct drilling sequence is as follows: the outer rod is lowered into place, and the adjacent inner rods start to protrude from the outer rod, from the outside to the inside, complete one by one.
2. After understanding the reasons for the failure and fracture of the drill pipe, it is necessary to take preventive measures in advance. In addition to starting from its own operation and daily maintenance, it is also necessary to purchase drill pipes with reliable quality.
Generally, a good drill pipe is not easy to be bent or broken by fatigue, and has high mechanical properties, fatigue resistance, shear strength, and bending strength. Has a long service life. To meet these requirements, the drill pipe requires not only good raw materials, but also exquisite workmanship.


The purchase of drill pipe is a technical task, and it is not to be sloppy. Recommended strategies

2022-06-30 14:44

Drilling rig is a common mechanical tool, and it is also a powerful teenager in geological exploration work. But the drilling rig can be so appreciated by people, and its various accessories are also indispensable and indispensable. Therefore, in order for the geological exploration work to be carried out normally, smoothly and efficiently, users who often use drilling rigs should also learn more about drill pipe accessories. As we all know, among drilling rig accessories, the role of drill pipe is particularly important. Therefore, the purchase of drill pipe for drilling rig needs to be serious and cautious. The following is the complete strategy of drill pipe purchase shared by Ningbo Zhedong Geological Equipment: 1. Buy what you need. The drill pipe is used to match the drilling rig. Therefore, first of all, you must find out what type and specification of drill pipe your drilling rig needs to be matched with, and then you must find out the environment and geology in which you will be constructing, so as to determine the short drill you need to purchase. Rod, or long drill rod, tooth wedge type, half tooth wedge type and friction type drill rod, or friction type or fixed drill rod, etc. Ningbo Zhedong Geological Equipment warmly reminds everyone that it is best to match at least 2 sets of drill pipes to prepare for the needs of various situations. 2. Learn to see the essence from the appearance. As the saying goes, the layman watches the fun, and the layman watches the doorway. The selection of drill pipes should be based on the doorway, and the magnifying glass should start from the details to see the problem. Drill pipe is an important tool for geological exploration site construction. Ningbo Zhedong Geological Equipment will teach you the basic way of purchasing drill pipe: the appearance of the drill pipe is not necessarily good, but the appearance of the drill pipe is not good. As for the appearance of the drill pipe, you can easily check it at the procurement site, such as whether there is rust on the surface of the drill pipe, whether there are pits, whether there is a steel mark pattern, etc., if the surface of the drill pipe is not smooth enough and the quality of the coating is not good, the drill pipe The quality and performance can be guaranteed, and there will be many hidden dangers in the later use. In this case, the drill pipe is not recommended for everyone to buy. 3. Learn from the manufacturer about the raw material and processing technology of the drill pipe. At present, the best material for the drill pipe body is the special alloy steel pipe for geology, and the processing technology is friction welding. Ningbo Zhedong Geological Equipment has a comparative advantage in this regard. The geological drill pipe we produce, the drill pipe body is made of high-quality geological special seamless alloy steel pipe, and the drill pipe joint is made of high-quality alloy structural steel, and is vacuum-conditioned. Treatment, greatly improves the fatigue strength and shear strength. In terms of technology, the advanced friction welding process is used for production and processing, which makes the drill pipe have the characteristics of high bending strength and firm welding. In addition, our production equipment completely adopts advanced numerical control processing equipment, which has the characteristics of stable production efficiency and quality. It can ensure the straightness requirements when drilling deep holes, and promote the product to have high fatigue resistance and long service life.

Now in the next few years, the product quality of our drill pipe industry will face a great improvement

2022-06-30 14:44

In recent years, with the support of a series of optimization policies in China and the development of China's mining industry, China's drill pipe market has begun to recover continuously, and the investment environment of the drill pipe industry has been greatly improved. , Many foreign capitals continue to enter the field of drill pipe in China. Under the investment of various parties at home and abroad, investment in drill pipe in China has become a very mainstream form. With the continuous development of Chinese mines and drill pipe production Under the improvement, some drill pipes are more popular. For example, twist drill pipes, auger pipes and other products have been well developed. In the near future, my country's drill pipe industry will have a rapid development space. Multi-subject refers to the situation in which state-owned enterprises, social enterprises, private enterprises, Hong Kong and Taiwan, and overseas enterprises jointly participate in the investment in the drill pipe industry. In terms of financing channels, there are also various forms including corporate investment, advertising investment, copyright pre-sale, financial loans, venture capital, government investment, personal investment, drill pipe fund funding and other forms of indirect sponsorship. The sources of drill pipe funds are more abundant and sufficient. Under such favorable circumstances, a good development space has been created for the development of our drill pipe industry. Our drill pipe manufacturers will also seize the current situation and increase their efforts to produce products that meet the current situation. In addition, after the successful docking of the stock market with drill pipe enterprises, the competitiveness of Chinese drill pipe enterprises will be greatly improved. Funding problems that have restricted China's drill pipe field for a long time can be fundamentally improved, providing more sources of funds for our drill pipe industry and creating a larger platform