Fluidic Oscillator Extended Reach via Vortex Chamber
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Solution Overview
Problem
Conventional fluidic oscillators operate at high frequencies and require high pressure differentials, limiting their effectiveness in creating pressure pulses that can travel long distances, which is undesirable for well intervention operations.
Innovation Solution
A fluidic oscillator design featuring a vortex chamber with tangentially disposed control ports that create a pressure differential, allowing for lower frequency operation and higher amplitude pulses, thereby increasing the extended reach of fluidic oscillations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional fluidic oscillators use a central structure to divide the flow chamber into two discrete channels, then the device can operate, but it produces high frequency oscillations that limit the extended reach of pressure pulses
Solution Approach 1:
The patent removes the central dividing structure from the flow chamber, extracting the element that caused high frequency oscillations. This allows the fluid flow to remain undivided and creates a single large chamber that supports lower frequency oscillations with extended reach, directly resolving the contradiction between oscillation frequency and pulse propagation distance.
Solution Approach 2:
The patent merges the flow chamber into a single undivided space, combining what was previously two separate channels into one continuous flow path. This merging eliminates the constraints imposed by the central structure and enables the generation of low frequency, high amplitude pressure pulses that can travel extended distances through the wellbore.
2Productivity
If conventional fluidic oscillators operate at high frequency, then they can generate pressure pulses, but the pulses cannot effectively travel long distances
Solution Approach 1:
The patent implements periodic action through controlled flow reversal in a single large chamber, creating oscillating pressure pulses at optimized low frequencies. The periodic attachment and detachment of flow to opposite walls generates sustained pressure waves that maintain amplitude over distance, allowing effective propagation through long wellbores while maintaining productive pressure pulse generation.
3Reliability
If conventional fluidic oscillators require high pressure differentials to operate, then they can function, but it limits their applicability in certain well intervention operations
Solution Approach 1:
The patent changes the operational parameters by using a single large undivided chamber that allows flow to attach and detach to opposite walls, creating oscillations at lower pressure differentials. This parameter change enables the device to function reliably in applications where high pressure differentials are not available, expanding the range of usable well intervention operations.
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
The fluidic oscillator achieves lower frequency operation with higher amplitude pulses, enabling effective axial vibrations to travel extended distances, reducing the need for high pressure differentials and improving the range of well intervention operations.
Implementation Method 1
The fluid flow creates a pressure differential across the first control port and the second control port
Implementation Method 2
The first wall and the second wall are arranged to direct a fluid flow to create a vortex flow in the vortex chamber
Data Source
AI summary
A fluidic oscillator includes a vortex chamber in fluid communication with a flow volume, an outlet, a first control port, and a second control port. The flow volume is defined by a first wall and a second wall. The first wall and the second wall are arranged to direct a fluid flow to create a vortex flow in the vortex chamber. The pressure differential cycles the attachment of fluid flow between the first wall and the second wall at a cycle rate. Because the fluidic oscillator can operate at a low cycle rate, the fluidic oscillator can provide an extended reach.