Integrated Blade Hydraulic-Magnetic Transmission Wellbore Cleaning Tool

Abstract

The invention relates to an integrated blade hydraulic-magnetic transmission wellbore cleaning tool, which is composed of a flow tube shell, a rotating magnetic core, an upper gage body, and a rotating blade. , the outer wall of the flow tube shell is provided with a lower gage body and a limit ring, and the upper gage body is installed on one side of the limit ring; the rotating magnetic core is integrally formed by the drum and the shaft, and the transition section between the drum and the shaft has a drilling Liquid hole, fixed hydraulic conversion device outside the rotating shaft, permanent magnets are evenly distributed on the outer wall of the rotating drum, and the magnetic poles of two adjacent permanent magnets are opposite in direction; the rotating magnetic core is installed in the flow tube shell, and the rotating blade is set outside the flow tube shell There is a bearing raceway on the outer wall of the flow tube shell, which corresponds to the bearing raceway of the rotating blade. Rolling bodies are installed in the bearing raceway, and there are sealing grooves on the outer wall of the flow tube shell; the rotating blade is integrated, and the inner wall of the cylinder is uniformly distributed. The magnetic poles of two adjacent permanent magnets are opposite in direction; the outer wall of the rotating blade is also equipped with an oil storage sealing compensation system. The invention adopts hydraulic-magnetic coupling transmission and is not limited by whether the drill pipe rotates, and can greatly improve the wellbore cleaning efficiency.

Description

technical field [0001] The invention relates to a wellbore cleaning tool used in order to effectively suppress the formation of cuttings beds and improve the wellbore cleaning efficiency during the drilling process of oil and gas wells, in particular to an integrated blade hydraulic-magnetic transmission wellbore cleaning tool. Background technique [0002] At present, well types such as high-inclination wells, horizontal wells, and extended-reach wells are often used in the exploitation of offshore oil, natural gas, and shale gas to increase the drainage area of ​​the wellbore and maximize the production of a single well. Due to the existence of the build-up section (the curved well section whose inclination angle increases from 0° to 90°) and the horizontal well section in these well types, the cuttings are not easily carried out of the wellbore by the drilling fluid under the action of the gravity component, and cuttings appear. The accumulation phenomenon forms the cutti...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide an integrated blade hydraulic-magnetic transmission wellbore cleaning tool, which is used to solve the current problems in wells such as highly deviated wells, horizontal wells, and extended-reach wells. The wellbore cuttings cleaning effect is not good during sliding drilling, and the formation of cuttings beds cannot be effectively suppressed

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