A casing sleeve closure device

The electrically operated telescopic shut-off device, controlled by a continuous tubing delivery cable, solves the problems of intelligent depth control and reuse in existing sliding sleeve shut-off technologies, thereby improving the development efficiency and safety of low-permeability oil and gas reservoirs.

CN224469119UActive Publication Date: 2026-07-07CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202521826202.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-27
Publication Date
2026-07-07
Estimated Expiration
2035-08-27

AI Technical Summary

Technical Problem

Existing sliding sleeve closure technology cannot achieve intelligent fixed-depth closure, has low operational efficiency and poor adaptability, cannot be reused, has high manufacturing costs, and cannot meet the needs of efficient development of low-permeability oil and gas reservoirs.

Method used

The shut-off tool is delivered via a coiled tubing cable. Commands are sent through the surface control system, and the downhole shut-off tool receives the commands and anchors to the target sleeve. Precise control of the sleeve is achieved using an electric telescopic shut-off mechanism.

Benefits of technology

It enables intelligent depth-controlled closure of the sliding sleeve, improving operational efficiency and adaptability, supporting production adjustments and repeated modifications of oil and gas wells, and reducing operational complexity and manufacturing costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a closing device of casing sliding sleeve adopts mechatronics design, mainly cable head + telemeter cylinder + magnetic positioning + gamma instrument + action mechanism constitute use continuous oil pipe and pass cable and convey closing instrument to target sliding sleeve, the power supply of ground control system, downhole control circuit receives instruction and drives action mechanism to open anchor inner sliding sleeve, hoist oil to drag and close, the utility model realizes the accurate closing of full bore casing sliding sleeve through the cooperative operation of continuous oil pipe and cable.
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Citation Information

Patent Citations

  • Fracturing sliding sleeve capable of closing door and using method

    CN112177567A

  • Intelligent fracturing sliding sleeve system with precise fracture forming function and implementation method

    CN119860187A