Hydraulic pipe screwing machine for screwing and unscrewing outer flat drill pipe and being capable of keeping off orifice

Abstract

The invention discloses a hydraulic pipe screwing machine for screwing and unscrewing an outer flat drill pipe and being capable of keeping off an orifice, which relates to the field of engineering drilling. The hydraulic pipe screwing machine mainly comprises an upper pincer body, a lower pincer body and hanging pincers, wherein the lower pincer body is fixed to the orifice and used for clampinga drill pipe in a hole and preventing the generation of a rod falling event; the upper pincer body is a main part of the pipe screwing machine, is used for realizing the large-torque screwing, unscrewing and buckling of the upper drill rod and has the effects of clamping the drill rod and screwing and unscrewing the drill rod; and the hanging pincers are mainly used for keeping the pipe screwing machine off the orifice, thereby reducing the area of a drilling well platform and the drilling cost. The pipe screwing machine of the invention is suitable for screwing and unscrewing various drill rods, can realize the working processes of screwed buckling, pretensioning, large-torque punched buckling, and the like of the drill rod and has the advantages of small size, light weight, large torque, safety and convenience for work and operation, and the like.

Description

technical field [0001] The invention relates to the field of engineering drilling, in particular to a hydraulic pipe twisting machine for unscrewing an outer flat drill rod and allowing openings. Background technique [0002] Wireline core drilling technology is called the first revolution of drilling technology, and it is the most widely used drilling technology with the best comprehensive geological effect in drilling construction in the world. Since the mid-1970s, my country began to popularize and apply it, but there is a big gap compared with foreign developed countries in terms of application breadth and depth. The core drilling workload completed by wireline core drilling technology is still less than the total solid core drilling workload. 30% of. The key technologies for drilling and coring (sample) are drilling equipment, drilling tools and techniques, which not only have an important impact on drilling efficiency, construction cost, coring quality and environmenta...

AI Technical Summary

Problems solved by technology

[0007] 3. The existing pipe twisting machine fails to solve the axial floating problem in the process of unscrewing and unloading the drill pipe well, resulting in increased wear of the drill pipe thread, thereby affecting the service life of the drill pipe;

[0008] 4. Most of the existing pipe twisting machines are suitable for unscrewing drill pipes in the case of medium and shallow holes or small torque, and the punching or preloading is completed by the impact of the fork. The impact during the unscrewing process has great impact on the drill pipe and Equipment life has a great impact

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