Recyclable pre-set ball full-metal single slip soluble bridge plug

By designing a recyclable pre-placed ball all-metal single-slip soluble bridge plug, the problem of no pumping fluid channel in the wellbore caused by the failure of bridge perforation ignition during bridge-fuse operation was solved. This enabled the recovery and secondary pumping of the soluble ball, improving pumping efficiency and reducing the amount of pumping fluid used.

CN224550075UActive Publication Date: 2026-07-24CHENGDU INNOX TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU INNOX TECH CO LTD
Filing Date
2025-09-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing synchronous ball-feeding soluble bridge plugs require re-pumping the perforation gun in bridge-perforation operation due to ignition failure of the perforation hole. This results in no pumping fluid channel in the wellbore, making secondary pumping impossible, and also leads to low pumping efficiency and high pumping fluid consumption.

Method used

Design a recyclable pre-placed ball all-metal single-slip soluble bridge plug, comprising a soluble mandrel, lower connector, central tube, metal sealing ring, slips, soluble ball, pusher, and release lever. The soluble ball is recovered through the flow channel and recovery device, solving the problem of the inability to pump twice in bridge-jet operation, and the pumping force is increased and the pumping efficiency is improved by increasing the pumping ring.

Benefits of technology

It enables the recovery of soluble balls in bridge-jet combined operation, solves the problem of not being able to re-insert the tool string, reduces operation time and pumped liquid usage, and improves pumping efficiency and reliability.

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Abstract

The utility model relates to a kind of full-metal single slip of recyclable pre-set ball soluble bridge plug, make bridge plug and fracturing soluble ball can be together down into well by connecting releasing rod and push cylinder on tool string;When setting, central tube is extruded slip and metal sealing ring with lower joint, metal sealing ring occurs radial deformation and contacts sealing with wellbore, and slip tooth of slip is pierced into wellbore wall, setting anchoring is carried out;After releasing, tool string is pulled up, negative pressure is generated when tool string is pulled up, because push cylinder side wall is provided with flow passage, so that the negative pressure generated when pulling up releasing rod can be balanced, to avoid that soluble ball is brought into recovery device by negative pressure;And in bridge shooting operation, after ignition failure of bridge shooting hole, push soluble ball into recovery device by returning liquid, push cylinder, releasing rod and soluble ball are pulled out of well by using tool string, so that tool string can be secondarily lowered to carry out perforation, soluble ball is put into after perforation to seal, ensure operation safety.
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Citation Information

Patent Citations

  • CN210530797U