Downhole Turbine Chamber Insert for Flow Optimization
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Solution Overview
Problem
Well operators face challenges in controlling the production of fluid components in a wellbore, particularly in producing mostly oil while reducing or eliminating gas and water production, due to varying ratios of fluid components in the production fluid.
Innovation Solution
A downhole flow control device with a turbine chamber optimized by a chamber insert that defines a reduced chamber volume, using a housing and baffle to improve flow dynamics and efficiency, allowing selective restriction of fluid components based on density and viscosity, and generating electrical power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a standard turbine chamber is used without optimization, then the device structure is simple, but the turbine performance and flow efficiency are insufficient
Solution Approach 1:
The turbine chamber is segmented into multiple functional zones using a chamber insert that divides the chamber into a first region (inlet side) and a second region (outlet side). This segmentation allows optimized flow paths and improved turbine performance without requiring a complete redesign of the entire chamber structure.
Solution Approach 2:
The chamber insert extends axially along the turbine axis and radially into the chamber volume, creating a three-dimensional flow control structure. This dimensional approach enables precise control of fluid flow around the turbine blades, improving efficiency by directing flow more effectively through the turbine.
2Adaptability or versatility
If flow control is not optimized, then the device structure is simple, but the ability to selectively restrict fluid components based on density and viscosity is limited
Solution Approach 1:
The chamber insert creates localized flow control regions with different characteristics - the first region optimizes for high-energy flow impingement on the turbine, while the second region manages outlet flow. This local optimization enables selective fluid component control based on their different flow properties without requiring complex external control systems.
3Productivity
If the chamber volume is not reduced, then the manufacturing is simpler, but the flow dynamics and efficiency around the turbine are suboptimal
Solution Approach 1:
The chamber insert is a nested component that fits within the existing turbine chamber, creating a reduced effective chamber volume while maintaining compatibility with the original housing. This nested approach achieves optimized flow dynamics without requiring complete remanufacturing of the chamber, balancing manufacturing ease with performance improvement.
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 solution enhances turbine performance and efficiency, allowing for improved control of fluid component production and increased oil production by selectively restricting water and gas, while generating power downhole.
Implementation Method 1
A turbine is rotatably disposed in the turbine chamber with the inlet port directed toward the turbine. The flow through the turbine chamber rotates the turbine, which can be used for any of a variety of applications, such as an inflow control device or electrical power generation.
Implementation Method 2
The chamber insert and the housing cooperatively define a reduced chamber volume for optimizing flow about the turbine. This arrangement improves flow dynamics about the turbine to improve turbine performance and efficiency.
Data Source
AI summary
A downhole flow control device is used to control the production of formation fluids while using flow of the formation fluids to drive a turbine. Flow through a turbine chamber is optimized using a chamber insert that cooperatively defines a reduced chamber volume with the turbine chamber. The chamber insert includes an overhead portion defining a ceiling over the turbine and an arcuate portion contiguous with an arcuate portion of the turbine chamber. The baffle is perforated to allow some flow to exit the reduced chamber volume to a bypass port in a cavity radially outwardly thereof. The turbine may be used for any suitable downhole application, such as an inflow control device or to generate electrical power.