What is geological drill pipe?

The selection of geological drill rods is no longer difficult. A few tricks will teach you to become a master. The use of drilling tools has become more and more widespread in today's society. Whether it is coal exploration, mineral exploration, gas exploration, or urban rail transit construction, drilling tools are indispensable. Drilling tools include drill rods, drill bits, drill collars, stabilizers, stabilizers, weighted drill rods, etc., which are used to transmit power, break strata and maintain borehole stability. Among drilling tools, geological drill rods have a very important position, so what exactly is a geological drill rod? The editor will first give you a scientific spectrum. The geological drill rod is a geological drilling tool designed and produced using a geological alloy steel pipe through a friction welding process. It is an indispensable equipment for geological prospectors. So what are the functions and characteristics of the geological drill rod? Today, the editor will take you to know the functions and characteristics of the address drill rod.

Geological drill rod is a geological drilling tool designed and produced by friction welding process using geological alloy steel pipe. The body of geological drill rod is made of geological special alloy steel pipe (R780, DZ50), and the joint of geological drill rod is made of high-quality alloy structural steel (42CrMo) after vacuum conditioning, which greatly improves the fatigue strength and shear strength. Geological drill rod is produced and processed by excellent friction welding process. The drill rod has the characteristics of high bending strength and firm welding. It can ensure the straightness requirements during deep hole drilling, and has high fatigue strength and long service life.

Drill rod is a commonly used vulnerable tool in the drilling process, which requires users who often use drilling rigs to know more about relevant knowledge. We all know that the role of drill rod is very large. What are the roles and characteristics of drill rod?

Drill rod is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the well. It is a steel pipe with a corrugated tail. The purpose of the drill rod is to transport drilling mud to the drill bit and lift, lower or rotate the bottom hole device. Drill pipes must be able to withstand huge internal and external pressures, twisting, bending forces and vibrations. Drill pipes are reusable during mining and refining.

Raw steel pipes and smooth pipes are made into drill pipes after multiple processing steps. First, through the thickening process of the steel pipe, the outer surface of the smooth pipe is bent inward and the wall of the steel pipe is thickened. Next, the threading is processed and copper is plated to increase strength. Then non-destructive quality control is carried out, followed by welding of the steel pipe body joints. The pipe body will then undergo welding heat treatment and welding final treatment to eliminate welding residual pressure. Before the finished drill pipe is painted and packaged, other tests are carried out on the finished steel pipe, including hardness testing, pressure testing and non-destructive testing. The length of the drill pipe is generally about nine meters.

1. The spiral drill pipe cold-drawn one-time forming blades, no annealing, good toughness and durability.

2. Long spiral drill pipe: cold-drawn one-time forming blades, no annealing, good toughness and durability.

3. The drill rod of the pile driver adopts an insert-type threaded connection, which is easy to disassemble and assemble, has good sealing, high tensile strength, and high pile quality. It has good verticality and is easy to disassemble and install.

In practical applications, choosing a suitable drill rod is crucial for drilling efficiency and construction safety. The following points can be used as a reference when purchasing:

1. Select specifications according to drilling depth-the deeper the drilling depth, the higher the strength and rigidity requirements of the required drill rod, and a drill rod made of high-strength alloy steel should be selected.

2. Match the drilling rig model-make sure that the specifications of the drill rod are compatible with the drilling rig to avoid affecting the construction progress.

3. Check the welding quality-the welding parts of high-quality drill rods should be smooth and free of cracks, and the welds should be uniform and free of welding defects.

4. Consider the formation environment-different geological environments have different performance requirements for drill rods. For example, soft formations are suitable for flexible drill rods, while hard rock formations require high-strength drill rods.

5. Pay attention to the surface protective layer-the surface of high-quality drill rods should have an anti-corrosion layer to increase service life and reduce replacement frequency.