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A flushing pipe assembly

An assembly and pipe flushing technology, applied in the field of pipe flushing assembly, can solve the problems of reducing drilling efficiency, increasing the replacement time of sealing packing, affecting the continuity of drilling operations, etc., and achieving the goal of increasing service life, reducing wear and reducing pressure Effect

Active Publication Date: 2022-06-21
SICHUAN KUNLUN GASOLINEEUM EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The frequent replacement of the sealing packing increases the replacement time of the sealing packing, greatly affects the continuity of the drilling operation and reduces the drilling efficiency

Method used

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  • A flushing pipe assembly

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Embodiment Construction

[0017] The present invention will be further described below with reference to the accompanying drawings and examples, and the modes of the present invention include but are not limited to the following examples.

[0018] like figure 1 shown:

[0019] The utility model relates to a flushing tube assembly, which can reduce the pressure on the dynamic seal, reduce the wear of the dynamic seal, and improve the service life of the dynamic seal by balancing the pressure on the inner wall and the outer wall of the movable tube. Its specific structure includes a static pipe 2 and a moving pipe 8. The static pipe 2 is connected to the water hose gooseneck through the static cylinder nut 1, and the moving pipe 8 is connected to the drilling tool through the connecting nut 12, and rotates with the drilling tool. The drilling mud is supplied by the water hose. The belt is transported to the static pipe, and is transported from the static pipe to the moving pipe, and finally enters the d...

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Abstract

The invention discloses a flushing pipe assembly, which comprises a static pipe connected with a water hose through a static cylinder nut, an oil storage chamber arranged in the static cylinder nut, sleeved on the outer wall of the static pipe and located in the oil storage chamber and The balance piston that is sealed and connected with the outer wall of the static tube and the inner wall of the oil storage chamber through the piston seal, the dynamic seal mounting seat that is arranged under the nut of the static cylinder tube, the dynamic tube that is arranged in the dynamic seal mounting seat and connected with the movable through the dynamic seal, and It is used to connect the oil storage chamber with the outer wall of the dynamic tube at the dynamic seal; wherein, the balance piston communicates with the inner channel of the static tube. In the present invention, the pressure at the moving tube and the dynamic seal mounting seat is equal to the pressure inside the moving tube through the oil storage chamber, the balance piston and the connecting oil circuit, thereby reducing the pressure on the dynamic seal, reducing the wear and tear of the dynamic seal, and improving the dynamic seal. The service life is longer, the replacement frequency of dynamic seals is reduced, and the drilling efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oil drilling machinery, in particular to a flushing pipe assembly. Background technique [0002] During the oil drilling operation, the high-pressure mud output by the mud pump is transported to the top of the top drive drilling device or the upper part of the water tap through the hose, and then conveyed to the bottom of the well through the flush pipe assembly down through the drilling tool assembly. The flushing tube assembly is a very critical component. In addition to the need to undertake high-pressure and high-speed mud, it also undertakes the function of dynamic and static conversion. [0003] In the existing flushing pipe assembly, the service life of the sealing packing used for sealing will be greatly reduced with the increase of drilling depth and the increase of mud pressure during field use. The frequent replacement of sealing packing increases the replacement time of sealing packing, and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/00F16J15/3268F16J15/3284
CPCE21B21/00F16J15/3268F16J15/3284
Inventor 高亮董生政蒋谊王翌杨平
Owner SICHUAN KUNLUN GASOLINEEUM EQUIP MFG