Electric water shutoff tool for underground oil well

Abstract

The invention relates to an electric water shutoff tool for an underground oil well, and relates to the technical field of oilfield underground tools. The electric water shutoff tool includes an upperjoint, an outer barrel, a lower joint, a center tube, a power module, a motor and a valve mechanism, the power module is installed in an annular airtight space surrounded by the upper joint, the lower joint, the outer barrel and the center tube, a window is arranged on the side face of the outer barrel, a stator of the motor is laterally inserted in the window, the stator of the motor and the edge of the window are sealed by a sealing pad, and thus the stator is connected with the outer barrel as a whole; and the stator of the motor is provided with a through hole for installing a rotor of the motor, the rotor of the motor is installed in the through hole, and a power line on the motor is connected with the power module through a plug-in type electrical coupler. According to the electricwater shutoff tool for the underground oil well, the motor is installed without arranging a steel tube, the installation space of the rotor of the motor is further increased, and by increasing the diameter of the rotor of the motor, output torque of the motor is increased.

Description

technical field [0001] The invention belongs to the technical field of downhole tools for oil fields, and in particular relates to an electric water plugging tool for downhole oil wells. Background technique [0002] After the oil field enters the stage of high water-cut production, it is often necessary to take water blocking measures for the high aquifer, exploit the low aquifer, and seal the high aquifer, so as to achieve the purpose of stabilizing oil, controlling water, increasing production and reducing consumption. The traditional water shutoff process adopts the mechanical water shutoff method, which has complex process, long construction period, inflexible adjustment of water shutoff, and automatic control cannot be realized, so the economic benefit is poor. In order to make up for the shortcomings of the traditional mechanical water shutoff process, researchers have developed electric water shutoff tools, such as an underground wireless pressure measurement system ...

AI Technical Summary

Problems solved by technology

[0004] This installation method not only cannot log wells, but also has a complex installation structure, and the tool is heavy, which is not conducive to construction and transportation. In order to make up for the lack of logging, this type of electric water plugging tool is often integrated with the logging function of the logging tool module, but this logging method can only test the position of the water plugging tool, and cannot test any depth downhole

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