What do you need to know about the purchase of geological drill pipes?

Classification:

Industry dynamics

Release time:

2021-05-07

【Summary Description】 Geological drill pipe is a drilling tool that uses standard geological pipes to thicken the upsetting heads at both ends, turn small pitch taper threads, and connect with lock joints. It is used in the field of geological exploration, transmits drilling rig torque to the bottom hole drill bit, and is responsible for transmitting drilling fluid.

钻杆

One,Understandingdrill pipeProcess. Geological drill pipe is a kindstandard geological pipeAfter upsetting head thickening at both ends, turning small pitch taper thread, and locking jointConnection, used in the field of geological exploration, transfer drilling rig torque to the bottom bit, and is responsible for the transmission of drilling fluid drilling tools. Common specifications areΦ42*1m, Φ50*1m, Φ60*1m, Φ63.5*1m, Φ73*1m, etc.Wait,The length can also be selected.CommonofThe connection mode is male and female connection (taper thread) and joint connection (rectangular internal thread).

2. understanding of drill pipe material. At present, the national standard materials areDZ40, DZ50, DZ60, R780, etcWait, in these material models,MaterialThe texture of R780 is the best, and it has outstanding performance in toughness and wear resistance.Shijiazhuang Weilida Prospecting Machinery Co., Ltd.The production of geological drill pipe body is used.Shanghai Baosteel Raw MaterialsGeological drill pipeConnectorthen adoptThe material is35CrMoAfter roughing, vacuum quenching and tempering heat treatment, finishing after surface nitriding treatment, can effectively eliminate the gluing, buckle problems, and more wear-resistant, easy to disassemble, greatly improving the fatigue strength and shear strength.

3. according to the drilling capacity parameters of the drilling rig and drilling diameter, drilling depth, accordingD/d = The empirical ratio of 4.5 determines the drill pipe diameter.

4. according to the main parameters of drill pipe design, namely torque, feed pressure to select drill pipe.drill pipeThe transmission torque is transmitted by the meshing and extrusion of the key and the key groove. Due to the processing accuracy, material properties, welding technology and other reasons, it is impossible to divide the torque evenly on each key, and each contact key cannot contact the force evenly. Therefore, the long key is often partially damaged by torsion. When selecting the design torque of the drill pipe, it must be greater than the design torque of the drilling rig.

5. understanding of the drill pipe process. In addition to the selection of high-quality materials, surface quenching is also very important to ensure wear resistance. The standard processing of the threaded part can ensure that the joint is frequently unscrewed without being damaged.Shijiazhuang Weilida Prospecting Machinery Co., Ltd.The production of geological drill pipe using advanced friction welding welding technology production and processing, drill pipe with high bending strength, welding firm and other characteristics, to ensure the requirements of deep hole drilling for straightness, with a long service life.

Key words:

weilida drill