Multi-stage Nozzle for Wellbore Cleaning Turbulence Reduction
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Solution Overview
Problem
Current wellbore cleaning apparatuses, including traditional nozzles, induce turbulence, leading to rapid energy loss and insufficient velocity to effectively remove debris and particles, resulting in inefficient cleaning operations.
Innovation Solution
A nozzle design featuring at least four successive concentric stages with discrete lengths and diameters, and a plurality of interfaces between stages, which minimizes turbulence and maximizes flow velocity by reducing energy loss and fluid friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional nozzles are used for wellbore cleaning, then the structure is simple and easy to manufacture, but turbulence is induced causing rapid energy loss and insufficient velocity to remove debris effectively
Solution Approach 1:
The nozzle is divided into multiple concentric stages (at least four) with discrete lengths and diameters, creating a segmented flow path that progressively reduces turbulence and maintains velocity. Each stage interfaces with the next to continue the controlled expansion and velocity maintenance
Solution Approach 2:
The nozzle geometry parameters (diameter, length) are systematically changed across successive stages. Each stage has specific dimensional ratios that control the fluid dynamics, transitioning the flow from turbulent to more laminar conditions while maintaining cleaning velocity
2Speed
If traditional nozzles are used, then the design is simple, but the stream disperses rapidly and loses velocity, leading to slow cleaning operations
Solution Approach 1:
The nozzle is segmented into at least four successive concentric stages, each with discrete length and diameter parameters. This segmentation creates controlled flow transitions that maintain velocity while managing the increasing complexity through modular design
Solution Approach 2:
The concentric stages are nested within each other, with each stage containing the next smaller stage. This nested configuration allows the complex multi-stage structure to be compactly arranged while maintaining the velocity profile and reducing stream dispersion
3Reliability
If traditional nozzles are used, then manufacturing is straightforward, but cleaning operations are incomplete and require extended time
Solution Approach 1:
Specific dimensional parameters of each stage (length, diameter, interface geometry) are optimized to ensure complete cleaning. The parameter progression across stages ensures sufficient velocity maintenance to remove all debris, preventing incomplete cleaning operations
Solution Approach 2:
The nozzle geometry is pre-designed with specific stage configurations that anticipate and prevent debris accumulation issues. The progressive stage design ensures velocity is maintained throughout the cleaning path, preventing the need for repeated or extended cleaning 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 nozzle achieves 99.5% efficiency, allowing for higher velocity and longer travel with minimal dispersion and velocity fall-off, enhancing cleaning performance and extending the cleaning distance by 20% compared to conventional methods.
Implementation Method 1
current wellbore cleaning apparatuses, including traditional nozzles, induce turbulence, that causes the stream to disperse and lose energy rapidly
Data Source
AI summary
A system, method and apparatus for cleaning a wellbore is disclosed. A workstring is conveyed in a wellbore. A jet sub provided associated with the wellbore, wherein the jet sub includes at least one nozzle, the nozzle including: an inlet; an outlet; at least four successive concentric stages in fluid communication with the inlet and the outlet, wherein each of the at least four stages has a discrete length, and the stages have progressive smaller discrete diameters, and an interface formed between each stage. A completion fluid is provided to the at least one nozzles via the work string and jet sub. The completion fluid is expelled via the at least one nozzles.