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Drilling tool for horizontal directional drilling and reaming

A technology for horizontal directional drilling and drilling, which is applied in directional drilling, drilling equipment and methods, driving devices for drilling in wellbore, etc., can solve problems such as high cost and risk, reduce construction costs and improve hole reaming efficiency Effect

Pending Publication Date: 2019-03-01
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the ground excavation construction technology, once the underground engineering of the horizontal directional crossing technology fails, the cost and risk of re-construction will be greater

Method used

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  • Drilling tool for horizontal directional drilling and reaming
  • Drilling tool for horizontal directional drilling and reaming
  • Drilling tool for horizontal directional drilling and reaming

Examples

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Embodiment Construction

[0028] see Figure 1-Figure 4 , is a drilling tool for horizontal directional drilling and reaming, including a housing, a primary drill bit (a primary reamer) and a secondary drill bit (a secondary reamer), and the housing includes a front end cover, a shell body and The rear end cover, the shell body is fixedly connected with the front end cover and the rear end cover through bolts respectively.

[0029] A primary drive system and a secondary drive system are installed on the housing. A transmission shaft and a transmission ring gear are arranged axially in the housing. A flat key on the transmission shaft is connected to a driven gear. The transmission ring gear is ring gear. The transmission ring gear is vacantly sleeved on the transmission shaft and is concentric with the transmission shaft. The primary driving system is connected to the primary driving gear, and the primary driving gear is meshed with the driven gear. The secondary driving system is connected to the sec...

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Abstract

The invention discloses a drilling tool for horizontal directional drilling and reaming. Through the drilling tool for horizontal directional drilling and reaming, small reactive torque is generated in the horizontal directional drilling and reaming operation process, the fatigue strength of a drilling rod is reduced, the reaming efficiency is improved, and the construction cost is lowered. The drilling tool comprises a shell, a primary drilling bit and a secondary drilling bit; a primary driving system and a secondary driving system are mounted on the shell; the shell is internally provided with a transmission shaft and a transmission gear ring in the axial direction, a driven gear is mounted on the transmission shaft, the transmission gear ring sleeves the transmission shaft in an emptymode, and the transmission gear ring and the transmission shaft are concentric; and the primary driving system is connected with a primary driving gear, the primary driving gear is engaged with the driven gear, the secondary driving system is connected with a secondary driving gear, the secondary driving gear is engaged with the transmission gear ring, the front ends of the transmission shaft andthe transmission gear ring forwards extend out of the shell, the front end of the transmission gear ring is connected with the secondary drilling bit, and the front end of the transmission shaft penetrates through the secondary drilling bit to be connected with the primary drilling bit.

Description

technical field [0001] The invention relates to the field of non-excavation technology, in particular to a drilling tool for horizontal directional drilling and reaming. Background technique [0002] With the world's increasingly tense energy sources, increasingly prominent contradictions between economic development and environmental protection, and the need for reserves, the world has entered the peak period of pipeline construction. According to the national plan, the total length of oil and gas pipeline construction in 2025 is expected to reach 240,000 kilometers. It is estimated that tens of billions of project output value will be created in the pipeline construction in the future. The traditional underground pipeline construction method is the "pipe digging and burying method". During the laying of oil and gas pipelines, it is inevitable to pass through obstacles such as rivers, mountains, hills, and buildings. In this case, there are no excavation construction condi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/26E21B10/60E21B7/04E21B4/04
CPCE21B4/04E21B7/046E21B10/26E21B10/60
Inventor 任连城袁力魏秦文董超群魏昌祥曲海
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY