Sliding Sleeve Flow Control Assembly for Wellbore Regulation
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Solution Overview
Problem
Existing well completion systems face challenges in efficiently regulating fluid communication between the wellbore and the surface, particularly in managing unexpected reservoir flow performance and changing flow conditions over time, often requiring complex and costly threaded connections.
Innovation Solution
A sliding sleeve-based flow control assembly is inserted inside a base pipe within a screen assembly, allowing for selective regulation of fluid communication through radial ports, eliminating the need for expensive threaded connections and enhancing mechanical strength for high flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If threaded connections are used to regulate fluid communication, then adaptability to changing reservoir conditions is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent employs a sliding sleeve mechanism that can dynamically adjust its position along the base pipe to regulate fluid communication. The sleeve can be moved to different positions to open or close radial ports, providing adaptability to changing reservoir conditions without requiring complex threaded connections. This dynamic adjustment capability resolves the contradiction by achieving versatility through a simple, movable structure rather than complex fixed connections.
Solution Approach 2:
The invention extracts the flow regulation function from complex threaded connection systems and implements it through a separate, simple sliding sleeve component. By taking out the regulation mechanism as an independent element that slides within the base pipe, the system achieves adaptability while reducing overall device complexity and eliminating the need for expensive threaded assemblies.
2Adaptability or versatility
If threaded connections are used for fluid communication control, then flow regulation capability is improved, but mechanical strength for high flow rates deteriorates
Solution Approach 1:
The sliding sleeve provides dynamic flow regulation by moving to different positions along the base pipe, opening or closing radial ports as needed. This dynamic mechanism maintains mechanical strength because the sleeve and base pipe form a continuous, strong structure without weak threaded joints, while still providing full flow regulation capability through the movable sleeve design.
Solution Approach 2:
The invention merges the flow regulation function with the structural base pipe by integrating the sliding sleeve directly into the pipe wall. This combination creates a unified structure where the regulation mechanism and structural component work together, maintaining high mechanical strength for high flow rates while providing effective flow control through the sleeve's movement.
3Manufacturing precision
If complex threaded connection systems are used, then fluid communication control precision is improved, but operational cost increases
Solution Approach 1:
The patent replaces expensive, complex threaded connection systems with a simpler, more cost-effective sliding sleeve mechanism. The sleeve is a relatively simple component that can be manufactured at lower cost and provides sufficient precision for fluid communication control. By using this simpler approach, operational costs are reduced while maintaining the necessary control precision for reservoir management.
Solution Approach 2:
The invention extracts the essential flow control function from expensive threaded connection systems and implements it through a simpler sliding sleeve. By taking out only the necessary regulation capability and removing the complex threaded infrastructure, the system achieves adequate control precision at lower operational cost, eliminating unnecessary complexity and expense.
Data Source
AI summary
An apparatus includes a base pipe, a screen and a first assembly. The screen at least partially circumscribes the base pipe to create a flow path between a first region that is outside of the screen and a second region that is inside the base pipe. The flow path includes at least one radial port of the base pipe and a third region between the screen and the exterior of the base pipe. The first assembly regulates fluid communication through the flow path. The first assembly includes a second assembly that is disposed in and mounted to the base pipe and a flow control device that is slidably connected to the second assembly. The flow control device is adapted to translate between at least two positions to regulate the fluid communication through the flow path.