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Bladeless type downhole motor

A power drilling tool and blade-type technology, which is applied to the drilling drive device, drilling equipment, earth-moving drilling and other directions in the wellbore, can solve the difficulty in the design, processing and assembly of turbo drilling tools, and the working conditions of screw drilling tools are limited. limited, poor economy and other problems, to achieve good economic benefits, easy promotion, low processing costs

Pending Publication Date: 2018-11-23
曾卫林
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a bladeless downhole dynamic drilling tool, which overcomes the deficiencies of the prior art above, and can effectively solve the problem of limited working conditions of screw drilling tools in existing drilling tools, and the design, processing and assembly of turbo drilling tools. Difficulty, high cost, poor economics of application and promotion

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  • Bladeless type downhole motor
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Embodiment Construction

[0024] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0025] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of front, rear, top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the description.

[0026] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0027] as attached figure 1 , 2 As shown, the vaneless downhole power drilling tool includes a vaneless downhole power unit, a coaxial reduction gear and a drilling tool execution unit distributed sequentially from top to bottom. The vaneless downhole power unit includes a...

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Abstract

The invention relates to the technical field of drilling equipment, and provides a bladeless type downhole motor. The bladeless type downhole motor comprises a bladeless downhole power device, a coaxial speed reducing device and a drilling tool executing unit which are successively distributed from top to bottom, wherein the bladeless downhole power device comprises a connecting barrel, a connecting shaft and at least two blow-back type bladeless downhole power units which are successively distributed from top to bottom; and the coaxial speed reducing device comprises at least one coaxial speed reducer, the coaxial speed reducer comprises a coaxial outer barrel assembly and a speed reducing transmission tube string, and a speed reducing transmission tube string capable of automatically rotating relatively is arranged in the coaxial outer barrel assembly. By arrangement of the multi-stage bladeless downhole power device, the power requirement for the downhole motor can be met; by arrangement of the coaxial speed reducing device, coaxial speed reducing and torque rise transmission can be realized, processing and assembling are facilitated, the bladeless type downhole motor can adaptto deep well high-pressure operation, requirements for downhole complicated working conditions are met, the processing cost is low, good economic benefit can be created, and the bladeless type downhole motor has the characteristic of easiness in popularization.

Description

technical field [0001] The invention relates to the technical field of drilling equipment, and relates to a bladeless downhole power drilling tool. Background technique [0002] Downhole dynamic drilling tools commonly used in the drilling industry mainly include screw drilling tools and turbo drilling tools. Among them, due to the existence of rubber parts in the screw drilling tool (such as the stator of its hydraulic motor including the steel outer cylinder and the rubber bush vulcanized on the inner wall of the steel outer cylinder, etc.), it has higher requirements on the properties of the drilling fluid (oil-based Drilling fluid is very sensitive and cannot work in dense drilling fluid), has poor high temperature resistance, and cannot adapt to deep well high pressure operations. As an all-metal power drilling tool, the turbodrill has many advantages over the screw drill in some functions, but there are still the following main problems: [0003] 1) Design, processin...

Claims

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Application Information

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IPC IPC(8): E21B4/00E21B4/02
CPCE21B4/006E21B4/02
Inventor 曾卫林
Owner 曾卫林
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