Inflow Control Valve Assembly for Horizontal Well Flow Uniformity
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Solution Overview
Problem
In longer, highly-deviated horizontal wells, non-uniform flow profiles along the horizontal section lead to premature water or gas breakthrough, screen plugging, and reduced well life due to variations in reservoir pressure and permeability, affecting hydrocarbon production and injection efficiency.
Innovation Solution
A completion assembly with a valve assembly that regulates fluid flow by positioning a valve between multiple positions in response to fluid pressure applied to a second tubular port, allowing for controlled pressure drop and flow management between the hydrocarbon reservoir and production tubular, using a flow control housing and indexing mechanism for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ICD is used to control pressure drop and improve flow uniformity, then hydrocarbon production and reserve recovery are improved, but device complexity increases due to multiple valve positions and indexing mechanisms
Solution Approach 1:
The valve assembly is designed to be dynamically reconfigurable between multiple positions (first closed position, first open position, second open position) through the indexing mechanism. This allows the flow control characteristics to be dynamically adjusted based on reservoir conditions, enabling optimization of hydrocarbon production while managing the complexity through a systematic positioning approach
Solution Approach 2:
The valve assembly is segmented into distinct functional components including the valve body, indexing mechanism, and multiple flow paths. This segmentation allows each component to perform its specific function independently, managing overall device complexity while achieving the desired flow control and production enhancement
2Stability of the object's composition
If valve assembly with multiple positions is used to optimize flow control, then flow uniformity along horizontal section is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The indexing mechanism provides local quality control by enabling different valve positions at different locations along the horizontal well section. Each position (closed, first open, second open) creates locally optimized flow characteristics that collectively achieve uniform flow distribution across the entire horizontal section
Solution Approach 2:
The valve assembly is designed with multi-functionality to serve multiple purposes: it can be in a closed position during installation to prevent debris entry, a first open position for normal production, or a second open position for enhanced flow. This universal design manages complexity by consolidating multiple functions into a single integrated assembly
3Reliability
If valve is positioned in closed state during installation, then debris prevention and circulation control are improved, but flow control flexibility is reduced
Solution Approach 1:
The valve is pre-positioned in the closed state during installation to preliminarily protect the system from debris contamination. This preliminary protective action is later reversed by using the indexing mechanism to transition the valve to open positions, thereby achieving both debris prevention during installation and flow control flexibility during operation
Solution Approach 2:
The valve transitions from a static closed position during installation to dynamically configurable open positions during production. This dynamic capability allows the system to adapt between the reliability needed during installation (closed position) and the flexibility needed during production (multiple open positions)
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
This solution ensures optimal hydrocarbon recovery by maintaining uniform fluid flow and pressure distribution, preventing premature breakthrough and extending well life, while allowing for flexible adjustment of flow configurations to meet specific application needs.
Implementation Method 1
The valve assembly is positionable between multiple positions for controlling the flow through the flow control flowpath in response to fluid pressure applied to the second tubular port
Implementation Method 2
An indexing assembly is used for positioning the valve assembly between multiple positions in response to fluid pressure selectively applied to the second tubular port
Data Source
AI summary
A completion assembly with a valve assembly for regulating fluid flow in a wellbore is disclosed. The completion assembly can include a base pipe with a sand screen. A flow control housing is disposed on one end of the sand screen. A first tubular port in the base pipe leads into the flow control housing, and a second tubular port is also formed in the base pipe. A flow path is formed within the flow control housing and communicates with both the base pipe and the inner annulus of the screen assembly. A valve assembly is located in the flow control housing and is in fluid communication with both the inner annulus and the base pipe. The valve assembly is positionable between multiple positions for controlling the flow through the flow control flowpath in response to fluid pressure applied to the second tubular port.