RF Signal Treatment for In-Situ Scale Resistance in Conduits
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Solution Overview
Problem
Existing methods for preventing scale deposits on equipment in fluid-containing conduits, such as downhole devices in wells, are inefficient, costly, and can contaminate the fluid, while requiring additional components that reduce flow volume and increase complexity.
Innovation Solution
A method and system using a radio frequency (RF) signal generator to treat devices in-situ within fluid-containing conduits, propagating the RF signal through existing lines to resist scale formation and build-up without adding extra components, such as sensors or dosing units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical solutions are introduced into fluid surrounding the equipment to resist scale formation, then scale deposits are prevented, but the fluid is contaminated and additional dosing units are required which reduce flow volume
Solution Approach 1:
The patent replaces chemical dosing systems with an acoustic field generation system. Acoustic transducers generate acoustic waves that propagate through the fluid to prevent scale formation on equipment surfaces, eliminating the need for chemical solutions and dosing units while avoiding fluid contamination.
Solution Approach 2:
The patent introduces acoustic waves as an intermediary medium to prevent scale formation. The acoustic field acts as a mediator between the fluid and equipment surfaces, disrupting the crystallization process of scale-forming minerals without requiring direct contact with chemical substances.
2Adaptability or versatility
If sensors are positioned near the equipment to detect environmental conditions for selecting scale inhibition methods, then suitable treatment can be determined, but device complexity and cost increase
Solution Approach 1:
The acoustic transducers are integrated directly into the equipment structure, allowing the equipment to generate its own acoustic field for scale prevention. This self-service approach eliminates the need for external sensing equipment and control systems to determine treatment parameters.
Solution Approach 2:
The equipment structure serves multiple functions: it acts as both the process equipment and the acoustic transducer housing. The acoustic field generation is integrated into the existing equipment design, eliminating the need for separate sensing and control components.
3Reliability
If dosing units are added to introduce chemical solutions, then scale formation is resisted, but the volume of fluid that can flow through the pipe is decreased
Solution Approach 1:
The patent replaces mechanical dosing units with acoustic field generation. Acoustic transducers mounted on the equipment generate sound waves that travel through the fluid to prevent scale formation, eliminating physical obstructions in the flow path and maintaining full fluid flow capacity.
4Reliability
If protective coatings are applied to equipment prior to submersion in liquid, then scale deposits are resisted, but additional manufacturing steps and potential coating failure are introduced
Solution Approach 1:
The patent replaces physical protective coatings with acoustic field generation. The acoustic waves actively prevent scale formation on the equipment surface during operation, eliminating the need for additional coating manufacturing steps and avoiding potential coating degradation issues.
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
Efficiently prevents scale formation and build-up on devices like ESPs and valves without fluid contamination, maintaining flow volume and reducing energy consumption, while eliminating the need for additional hardware.
Implementation Method 1
A method and system using a radio frequency (RF) signal generator to treat devices in-situ within fluid-containing conduits, propagating the RF signal through existing lines
Data Source
AI summary
A method of treating a device to resist formation and build-up of scale deposits at the device is provided. The device is located in a fluid-containing conduit. The method comprises feeding a radio frequency (RF) signal into a line connected to a device located in a fluid-containing conduit; and propagating the RF signal along the line to the device to resist formation and/or build-up of scale deposits at the device. A system for treating a device to resist formation and build-up of scale deposits at the device is also provided. A signal generator operable to generate an RF signal for treating a device to resist formation and build-up of scale deposits at the device is also provided. The signal generator is operable to feed the RF signal into a line connected to the device and to propagate the RF signal along the line to the device to resist formation and/or build-up of scale deposits at the device.