A packer makeup tool and method

By designing a packer resetting tool and utilizing the cooperation of the valve core and the unsealing mechanism, the problem of vacuum negative pressure during the extraction of the hydraulic resetting tool was solved, achieving low-resistance safe recovery, reducing operational risks and improving the success rate.

CN122169749APending Publication Date: 2026-06-09JINGZHOU SAIRUI ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JINGZHOU SAIRUI ENERGY TECH CO LTD
Filing Date
2026-04-07
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing hydraulic resetting tools generate a huge reverse suction force in the vacuum negative pressure zone during extraction, resulting in high recovery operation risk and low success rate, and are prone to damaging the downhole tubing.

Method used

A packer resealing tool was designed, comprising a central tube, a sealing assembly, a valve assembly, and a release mechanism. Through the mobility of the valve core and the shearing component of the release mechanism, fluid communication is achieved below the tool, eliminating the vacuum negative pressure zone and reducing the pulling resistance.

Benefits of technology

This effectively reduces the load requirements for recovery operations, avoids wire fatigue fracture and downhole tubing damage, and improves the safety and success rate of operations.

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Abstract

This invention relates to the field of oil well completion tool technology, and discloses a packer resetting tool, comprising: a central tube body having a through-hole central channel; a sealing assembly sleeved on the outer wall of the central tube body; a valve assembly disposed within the central channel, the valve assembly including a valve seat and a movable valve core, the valve core being used to close the central channel; and a release mechanism connected to the valve seat, the release mechanism being used to drive the valve core to release the closure of the central channel under force. The purpose of this invention is to solve the problem of high risk in the recovery operation of existing packer resetting tools.
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