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.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-07
AI Technical Summary
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.
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.
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.
Smart Images
Figure CN224469119U_ABST