Quick screwing-on and screwing-off drill rod with connector convenient to disassemble and assemble

Abstract

The invention provides a quick screwing-on and screwing-off drill rod with a connector convenient to disassemble and assemble. The quick screwing-on and screwing-off drill rod comprises a rod body, amale connector and a female connector, wherein the male connector is composed of a male connector body, a male connector threaded section and a male connector connecting section; the male connector connecting section penetrates through an inner hole of the male connector threaded section to be in threaded connection with the male connector body; the male connector connecting section is provided with a male connector threaded section limiting table; the male connector threaded section is in clearance fit with a hole shaft of the male connector connecting section; the female connector is composed of a female connector body, a female connector threaded section and a female connector connecting section; the female connector connecting section is in threaded connection with a hole shaft of thefemale connector body; the female connector connecting section is provided with a female connector threaded section axial limiting table; the female connector threaded section is located between the female connector threaded section axial limiting table and the female connector body; the female connector connecting section limits the female connector threaded section in the circumferential direction; and the male connector threaded section is in threaded connection with a hole shaft of the female connector threaded section. Quick replacement of quick-wear parts such as the drill rod connectorcan be achieved on a construction site, quick screwing-on and screwing-off are achieved, and the quick screwing-on and screwing-off drill rod is suitable for drilling at a higher rotating speed.

Description

technical field [0001] The invention relates to a drilling device, in particular to a fast make-up and break-out drill pipe with easy disassembly and assembly of joints. Background technique [0002] The drill pipe is an important part of the drilling rig. When the drill pipe is tripped or connected to a single root, there is wear on the flank of the thread, and it mostly occurs at the 2-5 buckle of the root of the big end, and the thread here is the stress concentration part. , If the worn thread is not repaired in time, it will seriously affect the strength of the drill pipe joint, thereby affecting the safety of drilling. During the make-up process of the drill pipe, the upper drill pipe or column rotates as a whole, which has the disadvantages of the risk of undercutting of the lifting pup joint, high labor intensity and high mechanical consumption. In addition, due to the existing friction welding process of oil drill pipes, there is a certain error (about 0.5-1.0 mm) ...

AI Technical Summary

Problems solved by technology

[0002] The drill pipe is an important part of the drilling rig. When the drill pipe is tripped or connected to a single root, there is wear on the flank of the thread, and it mostly occurs at the 2-5 buckle of the root of the big end, and the thread here is the stress concentration part. , if the worn thread is not repaired in time, it will seriously affect the strength of the drill pipe joint, thus affecting the safety of drilling

During the make-up process of the drill pipe, the upper drill pipe or column rotates as a whole, which has the disadvantages of the risk of undercutting of the hoisting pup joint, high labor intensity and high mechanical consumption

In addition, due to the existing friction welding process of oil drill pipes, there is a certain error (about 0.5-1.0 mm) in the coaxiality between the thread of the drill pipe joint and the rod body. Lateral vibration is generated due to the action of the drill pipe, which intensifies the friction between the surface of the drill pipe and the well wall or casing, and reduces the service life of the drill pipe

At the same time, due to the friction welding between the joint and the rod body, when the outer surface of the joint or the thread and other vulnerable parts are damaged, the whole drill pipe can only be returned to the factory for maintenance

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