Fluid Discriminator for Subterranean Well Flow Control
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Solution Overview
Problem
Current technologies face challenges in effectively discriminating between fluids in subterranean well operations, particularly in controlling fluid flow and preventing formation damage, coning, and optimizing production or injection processes.
Innovation Solution
A fluid discriminator system that adjusts outlet flow paths based on fluid composition properties, such as direction, viscosity, and ratio, using a structure that displaces in response to flow changes and a fluid switch to direct flow through either of two inlet paths, thereby varying resistance to flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fluid discriminator uses a structure that displaces in response to flow to change outlet flow paths, then fluid discrimination capability is improved, but device complexity increases
Solution Approach 1:
The patent employs a movable structure that dynamically displaces in response to fluid flow to redirect outlet flow paths. This dynamic mechanism allows the system to adapt to different fluid compositions and ratios, improving fluid discrimination capability while managing complexity through flow-driven actuation rather than complex control systems
Solution Approach 2:
The fluid discriminator utilizes the fluid flow itself to actuate the structure that changes outlet paths. The flowing fluid provides the force needed to move the structure, eliminating the need for external actuators or power sources, thereby improving discrimination capability without proportionally increasing device complexity
2Measurement precision
If a fluid switch directs flow through multiple inlet paths using a blocking device, then fluid control precision is improved, but device complexity increases
Solution Approach 1:
The blocking device acts as an intermediary element that selectively obstructs inlet flow paths based on fluid characteristics. This simple mechanical intermediary provides precise fluid control by directing flow through specific paths without requiring complex control systems, sensors, or multiple moving parts
Solution Approach 2:
The patent extracts the essential control function to a simple blocking device that can be positioned to open or close flow paths. By isolating the control mechanism to a single blocking element rather than a complex valve system, precision is achieved while minimizing device complexity
3Adaptability or versatility
If the system varies resistance to flow based on fluid composition, then fluid discrimination effectiveness is improved, but energy loss increases
Solution Approach 1:
The system uses hydraulic principles where fluid pressure and flow characteristics directly actuate the structure that varies resistance. The fluid's own energy is utilized to control the resistance variation, minimizing additional energy loss while improving discrimination effectiveness through composition-dependent flow resistance
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 system enhances fluid discrimination and control, allowing for efficient selection of outlet paths based on fluid characteristics, reducing undesired fluid flow and optimizing production or injection processes by varying resistance according to fluid composition.
Implementation Method 1
a structure (58) which displaces in response to a flow of a fluid composition (36)
Implementation Method 2
a blocking device (76) which at least partially blocks the flow of the fluid composition (36) through at least one of the first and second inlet flow paths (44a, 44b)
Data Source
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AI summary
A fluid discrimination system can include a fluid discriminator 42 which selects through which of multiple outlet flow paths 44a, 44b a fluid composition 36 flows, the selection being based on a direction of flow of the fluid composition 36 through the discriminator, and the direction being dependent on a fluid type in the fluid composition. Another fluid discriminator can include a structure 58 which displaces in response to a fluid composition flow, whereby an outlet flow path 44a, 44b of the fluid composition changes in response to a change in a ratio of fluids in the fluid composition.