Safety valve, method and system
By designing an insert-type safety valve and controlling the opening and closing of the valve using the pressure of the control pipeline, the problems of insufficient service life and reduced inner diameter of the safety valve are solved, thus achieving a long service life and functional stability of the safety valve.
CN122122368APending Publication Date: 2026-05-29BAKER HUGHES OILFIELD OPERATIONS LLC
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAKER HUGHES OILFIELD OPERATIONS LLC
- Filing Date
- 2024-11-08
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
The service life of existing safety valves is insufficient to meet well control requirements, and the inner diameter of insert safety valves will be reduced after replacement, affecting their function.
Method used
An insert-type safety valve is designed, including a housing, flow tube, baffle, atmospheric chamber, selectively openable valve, and off-seat component. The valve's opening and closing are controlled by controlling the pipeline pressure, ensuring normal operation in the wellbore and preventing fluid connectivity failures.
Benefits of technology
This extends the service life of the safety valve, maintains the effectiveness of the wellbore inner diameter, and ensures the functional stability and reliability of the safety valve.
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Smart Images
Figure CN122122368A_ABST
Abstract
An insert safety valve includes a housing, a flow tube located in the housing, a flapper responsive to a position of the flow tube, an atmosphere chamber located in the housing, a selectively openable valve for preventing or allowing pressure communication between the chamber and the environment, the valve including a valve member, a valve seat, and a unseating member for moving the valve member away from the valve seat. A drilling system includes a pre-existing safety valve having a control line, an insert safety valve located in the pre-existing safety valve, the insert safety valve operable by the control line. A method for controlling a wellbore includes running in an insert safety valve while preventing fluid communication with an atmosphere chamber of the safety valve, moving a unseating member, and effecting fluid communication with the atmosphere chamber.
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