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Supporting-rod two-blade large-diameter changing reaming tool

A knife-wing and rod-type technology is applied to drilling equipment, drilling equipment and methods, and earthwork drilling and production. Large diameter range and good stress conditions

Inactive Publication Date: 2015-04-01
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the oil and gas industry, after drilling to the design well depth, reaming will be carried out according to the technical requirements. Due to the limitation of the structure, the existing reaming tools have a limited reaming diameter.
In the mining industry of mineral resources, drilling technology is used to mine underground mineral resources. Mineral resources are mined through drilling technology. Due to the limited diameter of the borehole, the mining volume is very small. Therefore, the use of drilling technology to mine mineral resources requires the use of a large variable diameter function. reaming tools, and the existing reaming tools are limited in reaming diameter, it is difficult to meet the process requirements
[0003] Aiming at the characteristics of the small reaming diameter of the existing reaming tools, the present invention designs a reaming tool with large diameter changing function

Method used

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  • Supporting-rod two-blade large-diameter changing reaming tool
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  • Supporting-rod two-blade large-diameter changing reaming tool

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Embodiment Construction

[0015] Such as figure 1 with figure 2 As shown, a strut-type two-blade large-diameter reaming tool of the present invention is composed of a main cylinder 1, a faucet 2, a return spring 3, an inner central tube 4, a slider 5, a screw a6, an outer central tube 7. Blade base 8, strut base 9, screw b10, pin a11, strut 12, pin b13, cutting teeth 14, blade 15, and bolt 16; The column thread is connected, and the lower end is connected with the knife wing seat 8 with a thread; the return spring 3 is placed in the inner cavity of the main cylinder 1 and installed on the upper end surface of the knife wing seat 8; the upper end of the inner central tube 4 is connected with the water nozzle 2 with a thread, and the inner The central tube 4 is placed in the inner cavity of the main cylinder 1, and the contact surface between the main cylinder 1 and the upper and lower ends of the inner central tube 4 is sealed with a sealing ring; the middle part of the inner central tube 4 is provide...

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Abstract

The invention relates to a supporting-rod two-blade large-diameter changing reaming tool for mineral resource exploiting and oil-gas well underground reaming and solves the problem of underground large diameter changing reaming. According to the technical scheme, a main cylinder is in threaded connection with a blade seat, and three through grooves are formed uniformly in the main cylinder peripherally. A water nozzle is in threaded connection with a central tube, and three sliding blocks penetrate the three through grooves to be mounted in an inner central tube circular groove. The middle of an outer central tube is fixedly connected with a sliding block through screws a, and the lower portion is fixedly connected with a supporting rod seat through screws b. Cutting teeth are inlaid in the outsides of the blade wings, and the blade wings are hinged to the blade wing seat through bolts. The ends of supporting rods are hinged to the supporting rod seat, and the other ends are hinged to the blade wings. By means of the tool, the largest diameter after diameter changing can be more than three times of the largest diameter before diameter changing, the mechanical structure is reliable, and a hydraulic drive mode is used, so that the tool is simple to control and is used for underground reaming.

Description

technical field [0001] The invention relates to a brace-type two-blade large-variable-diameter reaming tool used for mineral resource exploitation and downhole reaming of oil and gas wells. Background technique [0002] In the oil and gas industry, after drilling to the design well depth, reaming operations will be carried out according to the process requirements. Due to the limitation of the structure, the existing reaming tools have a limited reaming diameter. In the mining industry of mineral resources, drilling technology is used to mine underground mineral resources. Mineral resources are mined through drilling technology. Due to the limited diameter of the borehole, the mining volume is very small. Therefore, the use of drilling technology to mine mineral resources requires the use of a large variable diameter function. reaming tool, and the existing reaming tool has a limited reaming diameter, which is difficult to meet the process requirements. [0003] Aiming at t...

Claims

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Application Information

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IPC IPC(8): E21B7/28
CPCE21B7/28
Inventor 叶哲伟梁政赵勇蒋发光张梁
Owner SOUTHWEST PETROLEUM UNIV
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