Totally-enclosed high-voltage resistant magnetomotive multi-ball injector

Abstract

The invention discloses a totally-enclosed high-voltage resistant magnetomotive multi-ball injector which comprises a shell, a union plug, a stepping motor, a strong magnetic driving rotor, a lead screw, a driven rotor, a ball selecting rod and two ball barrels, wherein the lower end of the shell is arranged on a fracture wellhead through a lower joint; two protruded limiting keys are symmetrically arranged on the wall of an inner cavity of the shell; the outer wall of the ball selecting rod is respectively and vertically provided with two through long grooves through which the corresponding limiting keys are inserted; openings in the upper ends of the two ball barrels are respectively sealed by a ball barrel end cover, and openings in the lower ends of the two ball barrels are respectively plugged by the ball selecting rod. The totally-enclosed high-voltage resistant magnetomotive multi-ball injection is high in voltage resistant level, strong in sealing reliability, capable of realizing loading ball injection under voltage without stopping a pump in the working process, large in online ball injection quantity, simple to operate, high in ball injection reliability, capable of improving the ball injection precision, small in size, convenient to carry and mount, capable of realizing remote control, away from a high voltage area and safe to operate.

Description

technical field [0001] The invention relates to a wellhead tool used in the development and application of oil and gas fields, in particular to a fully-sealed high-voltage resistant magnetic power multi-ball thrower. Background technique [0002] At present, in the field of global oil and gas field exploration and development, in order to achieve the purpose of increasing crude oil production, packer multi-stage staged fracturing and acidizing process is being widely used. When performing multi-stage fracturing and acidizing operations, the opening and closing of the sliding sleeve requires ball-throwing operations. The ball-throwing device is a tool installed at the wellhead for multi-stage fracturing and acidizing operations. Currently, the ball-throwing There are two methods: one is to use the screw nut manual ball throwing method, which has a small number of balls, low precision, poor reliability, and high labor intensity; the second is to use multi-stage liquid cylinder...

AI Technical Summary

Problems solved by technology

When performing multi-stage fracturing and acidizing operations, the opening and closing of the sliding sleeve requires ball-throwing operations. The ball-throwing device is a tool installed at the wellhead for multi-stage fracturing and acidizing operations. Currently, the ball-throwing There are two ways: one is to use the screw nut manual ball throwing method, which has a small number of balls, low precision, poor reliability, and high labor intensity; the second is to use multi-stage liquid cylinder layered balls and balls, and the number of balls is small , the equipment is huge and complicated, the operation is cumbersome, and the maintenance is difficult

The above-mentioned pitching equipment and methods severely limit the operational capacity and development efficiency of oil and gas fields, so it is necessary to improve

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