Dynamic push-abutting type rotary motor

A rotary motor and dynamic technology, applied in the field of drilling, can solve the problems of motor leakage failure, short service life of screw motor, easy to wear, etc., and achieve the effect of improving service life, easy disassembly and maintenance, and simple structure

Pending Publication Date: 2019-03-22
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the rubber bushing between the stator and the rotor is easy to wear during the working process, resulting in motor leakage and failure, and the conventional rubb

Method used

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  • Dynamic push-abutting type rotary motor
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  • Dynamic push-abutting type rotary motor

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0033] A dynamic push-back rotary motor, used in conjunction with the drill bit, can effectively increase the drilling rate by giving power to the drill bit near the drill bit, and can be used in various drilling processes, such as deep drilling, vertical drilling, extended displacement horizontal wells, etc. .

[0034] Dynamic push-on rotary motor, including outer tube 2, upper joint 1, upper support 3, upper centralizing ring 4, rotor assembly 5, sealing rod 15, stator 6, distribution valve 7, lower support ring 8, lower support 10, connection The shaft 9 , the connecting sleeve 11 , the lower joint 12 and the main shaft 13 , the rotor assembly 5 includes a rotor body 31 and four rotor push blocks 32 , and a reset block 14 is provided between the stator 6 and...

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PUM

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Abstract

The invention discloses a dynamic push-abutting type rotary motor used by cooperating with a drill bit. Power is supplied to the drill bit at the position near the drill bit, the drilling rate can beeffectively increased, and the dynamic push-abutting type rotary motor can be used for various drilling technologies such as deep drilling, vertical drilling and a large-displacement horizontal well.The dynamic push-abutting type rotary motor comprises an outer pipe, an upper connector, an upper support, an upper centering ring, a rotor assembly, a sealing rod, a stator, a flow distribution valve, a lower supporting ring, a lower support, a connecting shaft, a connecting sleeve, a lower connector and a main shaft; and the rotor assembly comprises a rotor body and four rotor pushing blocks, and a reset block is arranged between the stator and the rotor assembly. According to the dynamic push-abutting type rotary motor, all the parts are metallic parts and high-temperature-resistant parts,and therefore the dynamic push-abutting type rotary motor can be used in a high-temperature environment at 250 DEG C or above. A volumetric fluid pressure transfer mechanism is applied in the workingprocess of the motor, the advantages of a screw motor are inherited well, no rubber part is used for sealing, and therefore the service life of the motor is effectively prolonged.

Description

technical field [0001] The invention belongs to the field of drilling, and in particular relates to a dynamic pushing type rotary motor. Background technique [0002] At present, my country's exploration and development projects for unconventional oil and gas resources such as deep mineral resources, geothermal energy, shale oil, shale gas, coal bed methane and natural gas hydrate are increasing year by year. Advanced drilling techniques such as wireline coring, vertical drilling, extended-reach horizontal wells, butt wells, and underbalanced drilling used in drilling have also made great progress. The downhole dynamic drilling tool is the core tool used in various drilling processes. Practice has shown that the downhole dynamic drilling tool can enable the drill bit to achieve a higher mechanical penetration rate and greatly reduce the drilling cost. [0003] Downhole dynamic drilling tools mainly contain two types in the prior art, one is a vane type turbo drilling tool, ...

Claims

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Application Information

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IPC IPC(8): F03C2/22E21B4/02E21B12/00
CPCE21B4/02E21B12/00F03C2/22
Inventor 薛启龙刘宝林黄蕾蕾刘文辉王晋张蔚
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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