Device for stabilizing drill pipe in damping pipe of directional drilling and using method thereof

Abstract

The invention discloses a device for stabilizing a drill pipe in a damping pipe of directional drilling and a using method thereof. The device comprises a plurality of drill rod supporting pipes, wherein the drill rod supporting pipes are arranged on the outer side of the drill rod in a sleeving mode and arranged in the ramming pipe; the adjacent drill rod supporting pipes are fixed through flanges; an axial fixing mechanism is arranged at a ramming pipe opening and fixes the drill rod supporting pipes and the ramming pipe opening; each drill rod supporting pipe comprises a first stabilizer and a second stabilizer, the cross section of the first stabilizer and the cross section of the second stabilizer are both semicircular, the first stabilizer and the second stabilizer are spliced to form a hollow circular pipeline structure, and the splicing position is of a detachable structure. The hollow circular pipeline sleeves the outer side of the drill rod, the radial supporting mechanisms are uniformly arranged on the outer circumference of the hollow circular pipeline, one end of each radial supporting mechanism is fixed to the outer side wall of the hollow circular pipeline, and the other end of each radial supporting mechanism is in close contact with the inner wall of the ramming pipe. The device realizes detachable connection of the device for stabilizing the drill rod, the influence of disassembly on work of the drill rod is avoided, the stability of the drill rod in the ramming pipe is ensured, and the drill rod is prevented from deviating from the axis.

Description

technical field [0001] The invention belongs to the technical field of non-excavation engineering, and in particular relates to a drill pipe stabilizing device for directional drilling and ramming pipes and an application method thereof. Background technique [0002] With the rapid development of urbanization, the transformation of old pipelines and the laying of new pipelines are also developing rapidly. Directional drilling technology is currently the fastest-growing construction method for laying pipelines without excavation; and in directional drilling, often encounter Unfavorable formations such as sand and gravel layers or pebble layers will bring certain difficulties to directional drilling. According to the construction experience, in the horizontal directional drilling crossing construction, it is a commonly used technical measure in the non-excavation field to use rammed pipes at the entry and exit end to isolate the unfavorable formation. [0003] In the general ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems existing in the prior art, the present invention provides a stabilizing device for the drill pipe inside the ramming pipe for directional drilling and its use method, to solve the problem that most of the existing steel pipes are supported and welded in the ramming pipe. Once removed, it will not be able to be re-installed to provide support for technical issues

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