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Laser guide drilling method and system based on double-wall drill rod

A double-walled drill pipe and steering system technology, applied in the direction of drill pipe, directional drilling, drill pipe, etc., can solve the problems of poor adaptability, low work efficiency, single working mode, etc., and achieve high mud passing rate, simple structure, geological The effect of wide adaptability

Inactive Publication Date: 2020-10-09
中山市智合环境技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the prior art, the drill pipe on the horizontal directional drilling rig is an independent drill pipe, that is, a single drill pipe is used for drilling, and its work efficiency is low, and the working mode is single, and its adaptability to geologically complex exploration areas is poor

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  • Laser guide drilling method and system based on double-wall drill rod
  • Laser guide drilling method and system based on double-wall drill rod
  • Laser guide drilling method and system based on double-wall drill rod

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Embodiment Construction

[0046] In the following description, the present invention is described with reference to various examples. One skilled in the art will recognize, however, that the various embodiments may be practiced without one or more of the specific details, or with other alternative and / or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail so as not to obscure aspects of the various embodiments of the invention. Similarly, for purposes of explanation, specific quantities, materials and configurations are set forth in order to provide a thorough understanding of embodiments of the invention. However, the invention may be practiced without these specific details. Furthermore, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.

[0047] In this specification, reference to "one embodiment" or "the e...

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Abstract

The invention discloses a laser guide drilling system based on a double-wall drill rod. The laser guide drilling system comprises a main machine system, a earth pressure deviation correcting drill bitand a multi-section double-wall drill rod connected in the front-back direction, wherein the main machine system provides rotary jacking power for pipe jacking construction, the main machine system comprises a top frame system, a guide system, a hydraulic system and a control system, the earth pressure deviation correcting drill bit is matched with a guiding system of the main machine system, jacking of the double-wall drill rod is conducted, the earth pressure deviation correcting drill bit is provided with a mud hole, the first end of the multi-section double-wall drill rod connected in thefront-back direction is connected to the main machine system, the second end of the multi-section double-wall drill rod connected in the front-back direction is connected to the earth pressure deviation correcting drill bit, each section of double-wall drill rod comprises an inner drill rod, an outer drill rod and a limiting bulge between the inner drill rod and the outer drill rod, an outer annular gap is formed between the inner drill rod and the outer drill rod, the outer annular gap communicates with a mud hole of the drill bit and is further connected to a mud joint at the first end of the multi-section double-wall drill rod, the inner drill rod is provided with an inner cavity hole, the second end of the earth pressure deviation correcting drill bit is connected with the inner drillrod in a sealed mode, so that the inner cavity hole is isolated from the outer annular space in a sealed mode, and the inner cavity hole is used for laser guiding positioning.

Description

technical field [0001] The invention relates to the technical field of pipeline construction. More specifically, the present invention relates to a laser-guided drilling method and system based on a double-walled drill pipe. Background technique [0002] With the further development of municipal construction and the gradual improvement of rural living conditions, the demand for public infrastructure and household water supply and drainage has further increased, which is inseparable from construction work such as pipeline installation and maintenance. [0003] Compared with excavation construction, the overall advantage of trenchless construction of underground pipelines is that the negative impact of construction is small, the site occupation is relatively small, and the impact on the ground, traffic, environment, and surrounding underground pipelines is very weak. [0004] In pipeline construction, areas with poor geology and dense buildings are often encountered. In order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B7/10E21B17/00E21B21/00E21B19/24
CPCE21B7/04E21B7/10E21B17/00E21B19/24E21B21/00
Inventor 郭坤
Owner 中山市智合环境技术有限责任公司
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