Split blade hydraulic-magnetic transmission well hole cleaning tool

Abstract

The invention relates to a split blade hydraulic-magnetic transmission well hole cleaning tool, which consists of a flow tube casing, a rotating magnetic core, an upper gauge protection body and a rotating blade, wherein the gauge protection body is arranged in a position, near the external screw thread part, of the outer wall of the flow tube casing, the outer wall of the flow tube casing is also provided with a position limiting ring, the upper gauge protection body is arranged at one side of the position limiting ring, the rotating magnetic core is integrally formed by a rotating tube and a rotating shaft, a transition connecting section of the rotating tube and the rotating shaft is provided with a drilling fluid hole, a hydraulic conversion device is fixedly arranged outside the rotating shaft, permanent magnets are uniformly distributed on the outer wall of the rotating tube, the two adjacent permanent magnets have the opposite magnetic pole directions, a rotating magnetic core is arranged in the flow tube casing, permanent magnets are uniformly distributed on the inner wall of the rotating blade tube body, and the two adjacent permanent magnets have the opposite magnetic pole directions; the hydraulic conversion device is a double-layer tubular body, and an axial pressure difference blade is arranged between the two layers of tubes; the rotating blade is split and dismountable. The split blade hydraulic-magnetic transmission well hole cleaning tool has the advantages that through the hydraulic-magnet coupling transmission, the limitation by the condition whether a drill rod rotates or not is avoided, the hydraulic-magnetic coupling transmission is realized under the condition of drilling fluid circulation, and the well hole cleaning efficiency is improved.

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 drilling of oil and gas wells, in particular to a split-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 cuttings bed. Both fiel...

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Problems solved by technology

[0014] The object of the present invention is to provide a split-blade hydraulic-magnetic drive 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 cleaning effect of cuttings in the wellbore is not good during sliding drilling, and the formation of cuttings beds cannot be effectively suppressed

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