Wear-resistant oil drill pipe

Abstract

The invention discloses a wear-resistant oil drill pipe long in service life. The oil drill pipe comprises a drill pipe body. An installation groove is formed in the drill pipe body and internally provided with a bearing inner ring through a pressing block and a pressing ring. A plurality of spring grooves are evenly formed in the inner side of the bearing inner ring. Springs matched with the spring grooves are arranged in the spring grooves in the radial direction. The inner sides of the springs abut against the drill pipe body. The outer sides of the springs abut against the bearing inner ring. A bearing outer ring is rotationally arranged outside the bearing inner ring through a rotor. A wear-resistant layer is arranged outside the bearing outer ring. The oil drill pipe has the advantages that when the drill pipe is lifted up and put down in a horizontal well, an inclined well and a measure well, if a sleeve wall is hit, the bearing inner ring with the springs can bear force and automatically retract, buffering and shock absorbing can be effectively achieved, and the drill pipe can be conveniently lifted up and put down and can be protected; meanwhile, the bearing outer ring can drive the wear-resistant layer to continuously rotate along the bearing inner ring under the effect of the rotor after bearing force, the wear resistant effect is good, and the drill pipe is long in service life.

Description

technical field [0001] The invention relates to a power drilling tool for drilling and repairing wells. Background technique [0002] Petroleum resources are a non-renewable resource. With the increasing potential of oil production efficiency control, drilling and workover operations in oilfields gradually extend to deeper and more complex geology. There are more and more inclined wells, horizontal wells and measure wells. The pipe is deformed, bent, and inclined. When the ordinary drill pipe is tripped, it will often hit the casing wall, causing damage to the drill pipe, affecting the drilling quality of the drill pipe after tripping, and shortening the service life. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a wear-resistant oil drill pipe with long service life. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: wear-resistant oi...

AI Technical Summary

Problems solved by technology

[0002] Petroleum resources are a non-renewable resource. With the increasing potential of oil production efficiency control, drilling and workover operations in oilfields gradually extend to deeper and more complex geology. There are more and more inclined wells, horizontal wells and measure wells. The pipe is deformed, bent, and inclined. When the ordinary drill pipe is lifted and lowered, it will often hit the casing wall and cause damage to the drill pipe, which will affect the drilling quality of the drill pipe after lifting and lowering the service life.

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