Hydraulic sealing permanent packer

Abstract

The invention relates to the technical field of a packer used for petroleum drilling and provides a hydraulic sealing permanent packer. The hydraulic sealing permanent packer comprises a central pipe, a lower connector, a spindle pipe, a rubber plug sealing device, an upper base hanging device, a lower base hanging device and a hydraulic driving device, wherein the spindle pipe is fixedly mounted on the exterior at the lower end of the central pipe through screw threads; the lower connector is fixedly mounted on the exterior at the lower end of the spindle pipe through screw threads; an upper connecting thread is arranged on an inner wall of the upper part of the central pipe; a lower connecting thread is arranged on the inner wall of the lower part of the lower connector; and the rubber plug sealing device, which can swell along a radial direction after being pressed so as to seal a well, is mounted outside the upper part of the central pipe. The hydraulic sealing permanent packer is reasonable and compact in structure and is convenient in usage. Under the condition of keeping the pressure, the lower base hanging device, the rubber plug sealing device and the upper base hanging device are driven to move upward by the hydraulic driving device, the upper base hanging device and the lower base hanging device are located and hung on a well wall, and meanwhile, the sealing is realized by the rubber plug sealing device. The hydraulic sealing permanent packer has the characteristics of simple operation, low manufacturing and using costs, reliable sealing, safety and high efficiency.

Description

Technical field [0001] The invention involves the field of oil drilling technology, and is a hydraulic seal permanent seal closure. Background technique [0002] At present, during the construction of wells, repairs, and production operation operations, it is often necessary to sit on the wall of the well and seal the strata to achieve stratified section mining, water -controlling water, reservoir transformation and other purposes.EssenceThe conventional septifiers often have the following problems: complex structural, large components lead to high processing costs, complex operating processes, and low overall reliability of the tools; insufficient sitting and hanging up and hanging when sitting on the wall of the well, Cava, CavaIt cannot be effectively sitting on the inner wall of the sleeve. The rubber tube is not swollen and the sealing performance is poor; Invention content [0003] The present invention provides a hydraulic seal permanent seal closure that overcomes the la...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a hydraulic seat seal permanent packer, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of sealing The device has the problems of complex structure, high cost, insufficient seating force, poor sealing, and low reliability

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