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Downhole power screw drilling tool

A screw drilling tool and power technology, which is applied to the driving device for drilling in the borehole, earthwork drilling, drilling equipment, etc., can solve the problems of low temperature resistance of the stator rubber and reduce the temperature of the stator rubber

Active Publication Date: 2021-07-06
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a downhole power screw drilling tool, mainly a screw drilling tool, which is dedicated to solving the problem of low temperature resistance of the stator rubber in the prior art. Medium in the form of materials, thereby reducing the friction between the rotor and the stator rubber, and achieving the problem of reducing the temperature of the stator rubber

Method used

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Embodiment Construction

[0031] The technical solution of the present invention will be further described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited to the following description.

[0032] Such as figure 1 , 2 A downhole power screw drilling tool shown is composed of a bypass valve assembly 100 , a motor assembly 200 , a cardan shaft assembly 300 , a transmission shaft assembly 400 , a bit joint 500 and a stabilizer sleeve 600 . In this scheme, the valve assembly 1 million cardan shaft assembly 300, transmission shaft assembly 400, and drill joint 500 all adopt the existing technology, so this embodiment does not describe the above parts in detail, and any reasonable structural design can be used in the present invention.

[0033] Such as image 3 As shown, the biggest improvement of this solution lies in the regulation of the motor assembly 200, thereby reducing its operating temperature. The motor assembly 200 includes a...

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Abstract

The invention relates to a downhole power screw drilling tool, which is composed of a bypass valve assembly, a motor assembly, a cardan shaft assembly, a transmission shaft assembly, a drill joint and a stabilizer sleeve. The motor assembly includes an outer tube , helical stator rubber, and helical rotor, the helical stator rubber is fixed on the inner wall of the outer tube, the helical rotor is located in the helical stator rubber, and the bypass valve assembly is used to convey Slurry, a plurality of uniformly distributed spherical media is filled between the helical rotor and the helical stator rubber, and the spherical media and the helical stator rubber are made of the same material. This solution reduces the friction between the rotor and the stator rubber by introducing a medium in the form of the stator rubber material, thereby reducing the temperature of the stator rubber.

Description

technical field [0001] The invention relates to the field of technical drilling tools, in particular to a downhole power screw drilling tool. Background technique [0002] Downhole motor (downhole motor) refers to the bottom hole drilling tool that can convert the energy of drilling fluid into drilling rock breaking power, such as turbo drilling tool, single screw drilling tool, electric drilling tool, etc. Due to the downhole power screw drilling tool (Bottom hole motor) has a high speed, which can significantly increase the mechanical drilling speed, especially when used in conjunction with the PDC bit, the drilling speed will be greatly improved. Generally, there are three main types of downhole power screw drilling tools, one is positive displacement screw drilling tools, the other is vane type turbo drilling tools, and the third is electric drilling tools. Due to the improvement of the structure, the application of new materials and new technologies, these three kinds ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/02
CPCE21B4/02
Inventor 王作文吴宇航孟晓平王梦迪罗瑾胡飞龙刘伯涛张沛罗利平齐志国袁圣林唐兵杨昆马洋王清
Owner SOUTHWEST PETROLEUM UNIV
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