Hydraulic Suspension Packer with Anti-separation Slips

Abstract

The invention relates to the technical field of a hanging packer, and discloses an anti-fall split slip hydraulic hanging packer, which comprises a central shaft, a piston, a cavity sleeve, a first sleeve, a second sleeve and a slide bushing, wherein the cavity sleeve is fixedly arranged outside the lower end of the central shaft; the upper end of the cavity sleeve is fixedly provided with the first sleeve with internal diameter of greater than the internal diameter of the cavity sleeve; and a piston axial movement sliding chute is formed between the first sleeve and the central shaft. The anti-fall split slip hydraulic hanging packer has the advantages of rational and compact structure, convenience in use, capabilities of compressing a clamp spring in an upper slip cap and a lower slip cap by an upper slip hanging seat and a lower slip hanging seat respectively through the action of an upper conical sleeve and a lower conical sleeve when a piston is pushed to ascend through hydraulic force, realizing hanging through radial expansion of the lower part of an upper slip and the upper part of a lower slip to a lower layer of bushing and meanwhile realizing siting through bulging of rubber sleeves under the action of thrust, easiness in operation, convenience in mounting and capabilities of realizing self-locking and improving the reliability of hanging through engagement of inner teeth and outer teeth of an inverted tooth ring and improving a sitting effect by arranging bearing rings in an upper rubber sleeve and a lower rubber sleeve respectively.

Description

technical field [0001] The invention relates to the technical field of suspension packers, and relates to a hydraulic suspension packer with anti-loosening split slips. Background technique [0002] The use of packers for well completion operations is currently the most widely used and most common technical measure; especially as the exploration of tight gas reservoirs such as shale gas continues to increase, the use of multi-layer and staged fracturing technology for production stimulation has become a The focus of the industry's attention is that an indispensable technical link of the multi-layer and staged fracturing technology is the development and utilization of the uppermost top packer; the reliability of its setting seal is the core that determines whether the fracturing process can be successfully completed One of the technologies; at present, most of the suspension packers used in on-site well completion have technical defects such as difficult indoor installation,...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a hydraulic suspension packer with anti-separation slips, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of difficulty in indoor installation and low reliability of on-site operation of the currently used suspension packers. Unreliable slip suspension force and poor sealing performance of the rubber cartridge

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