Shuttle Valve Autonomous Fluid Flow Control
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Solution Overview
Problem
In hydrocarbon production wells, existing technologies face challenges in effectively regulating the flow of formation fluids, particularly in preventing water and gas coning, minimizing unwanted fluid production, and maximizing oil production, as they often lack discrimination between different types of fluids and require operator control.
Innovation Solution
The implementation of an autonomous flow control device with a shuttle valve system that utilizes floats and fluid dynamics to selectively restrict the flow of unwanted fluids like water and gas into the production tubing, allowing desired fluids like oil to pass through by leveraging density differences and centrifugal forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If autonomous flow control devices are used to automatically regulate fluid flow, then operator control is eliminated and fluid flow regulation is improved, but the device complexity increases due to the need for autonomous control mechanisms
Solution Approach 1:
The autonomous flow control device uses the kinetic energy and density differences of the flowing fluids themselves to operate the shuttle valve and control mechanism, eliminating the need for external power sources or complex electronic control systems. The device serves itself by utilizing the properties of the fluid flow to regulate its own operation.
Solution Approach 2:
The device employs hydraulic principles where fluid pressure and flow dynamics directly actuate the shuttle valve mechanism. The heavier fluid (e.g., water) naturally displaces the lighter fluid (e.g., oil) through density differences, causing automatic valve switching without mechanical actuators or complex control systems.
2Device complexity
If non-discriminating gatekeeper valves are used to regulate fluid flow, then device complexity is reduced, but the ability to discriminate between different types of formation fluids is lost
Solution Approach 1:
The device creates different flow path characteristics for different fluid types. The shuttle valve mechanism provides locally differentiated flow resistance based on fluid density, allowing the same valve structure to selectively pass desired fluids while restricting undesired fluids through geometric design rather than complex control logic.
3Adaptability or versatility
If autonomous flow control devices with shuttle valves are used to discriminate between fluids, then fluid discrimination capability is improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The control mechanism uses the kinetic energy and density differences of the flowing fluids themselves to operate the shuttle valve, eliminating the need for external power sources or complex electronic control systems. The device utilizes the properties of the fluid flow to automatically regulate its own operation.
Solution Approach 2:
The device employs hydraulic principles where fluid pressure and flow dynamics directly actuate the shuttle valve mechanism. The heavier fluid (e.g., water) naturally displaces the lighter fluid (e.g., oil) through density differences, causing automatic valve switching without mechanical actuators.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient regulation of fluid flow without operator intervention, effectively preventing water and gas coning, minimizing unwanted fluid production, and maximizing oil production by automatically adjusting to fluid composition, thereby optimizing well performance.
Implementation Method 1
selectively restrict any fluid flow through the outlet flow ports of the autonomous flow control device into the production tubing string
Implementation Method 2
allowing desired fluids like oil to pass through by leveraging density differences and centrifugal forces
Data Source
AI summary
A fluid control system may comprise a flow control device including one or more floats attached within the flow control device, an outlet within the flow control device that is connected to the one or more floats, a regulatory valve that is fluidly connected to the flow control device, and a blocking element placed within the regulatory valve. An autonomous flow control system may comprise a first flow control device attached to a production tubing at a first location in a wellbore, a second flow control device attached to the production tubing at a second location in the wellbore, a first set of floats attached within the first flow control device, and a second set of floats attached within the second flow control device.