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Large-diameter seamless drill pipe and machining process thereof

A large-diameter, drill pipe technology, applied in the direction of drill pipe, drill pipe, casing, etc., to achieve the effect of ensuring the stability of use, ensuring stability, and improving connection strength and stability

Pending Publication Date: 2021-06-01
NANTONG HONGYUAN GEOLOGICAL ENG MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the first aspect, in order to improve the problem that the wear of the inner wall of the large-diameter seamless drill pipe easily affects the use stability of the drill pipe, the application provides a large-diameter seamless drill pipe

Method used

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  • Large-diameter seamless drill pipe and machining process thereof
  • Large-diameter seamless drill pipe and machining process thereof
  • Large-diameter seamless drill pipe and machining process thereof

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Embodiment Construction

[0039] The following is attached Figure 1-6 The application is described in further detail.

[0040] The embodiment of the present application discloses a large-diameter seamless drill pipe. refer to figure 1 , a large-diameter seamless drill pipe includes a drill pipe main body 1 . The drill pipe main body 1 is a large-diameter seamless steel pipe, and the operator can enter the inner cavity of the drill pipe main body 1 for operation. The end wall at one end of the drill pipe body 1 in the length direction is provided with an inlay groove 11 around the periphery of the through hole. length dimension.

[0041] refer to figure 1 The main body of the drill pipe 1 is provided with a pressure-bearing tube 2 in the inner cavity of the embedded groove 11 , and the outer peripheral size of the pressure-bearing tube 2 is adapted to the inner diameter of the embedded groove 11 . When the pressure-bearing tube 2 is fully inserted into the inner cavity of the embedded groove 11, ...

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Abstract

The invention relates to a large-diameter seamless drill pipe and a machining process thereof. The large-diameter seamless drill pipe comprises a drill pipe body, an embedded groove is formed in the end wall of one end, in the length direction, of the drill pipe body, a pressure bearing pipe is arranged on a position, in the embedded groove, of the drill pipe body, a positioning assembly is arranged between the pressure bearing pipe and the drill pipe body, the positioning assembly comprises an orientation rod and a clamping and fixing piece, the orientation rod is located in the embedded groove, a through hole is formed in the end wall of the pressure bearing pipe in the length direction in a penetrating mode, a positioning groove is formed in the end wall, away from the drill pipe body direction, of the orientation rod, a rod body of the clamping and fixing piece is arranged in the positioning groove in a threaded fit mode, and the end of the clamping and fixing piece is abutted with the orientation rod and the pressure bearing pipe at the same time. The machining process of the large-diameter seamless drill pipe comprises the steps of sleeving positioning, inner end fixing and outer end fixing. The drill pipe has the effects that the stability of long-time use of the drill pipe body is effectively guaranteed, and an operator can conveniently and rapidly mount and dismount the pressure bearing pipe in an inner cavity of the drill pipe body.

Description

technical field [0001] The present application relates to the field of seamless drill pipes, in particular to a large-diameter seamless drill pipe and its processing technology. Background technique [0002] Seamless drill pipe is a steel pipe for geological drilling, and most seamless drill pipes are used with drilling equipment. The seamless drill pipe can be sleeved on the outer edge of the output end of the drilling equipment through the pilot drill bit. During the drilling process, the output end of the drilling equipment drives the seamless drill pipe into the geological interior. Afterwards, the pilot drill bit is retracted so that the seamless drill pipe is unsleeved on the outer edge of the output end of the drilling equipment. After the output end of the drilling equipment is pulled away from the geological layer, the seamless drill pipe is fixed inside the geological layer for subsequent use. . [0003] The Chinese patent with the publication number CN105247159A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B17/04
CPCE21B17/00E21B17/04
Inventor 刘炳城俞吉晶
Owner NANTONG HONGYUAN GEOLOGICAL ENG MATERIAL