Reverse Flow In-Flow Control Device for Even Wellbore Drainage
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Solution Overview
Problem
Existing wellbore systems face challenges in achieving even fluid drainage across production zones, leading to undesirable conditions such as gas or water cones that can reduce hydrocarbon production efficiency.
Innovation Solution
The apparatus and method involve a flow control system with a sleeve and enclosure, featuring parallel passages and an annular space that induce pressure drops and flow reversals to manage fluid flow, ensuring controlled and even drainage by configuring the flow passages and annular space to direct fluid flow in specific axial and opposite directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional wellbore systems are used without flow control devices, then the system structure is simple, but uneven fluid drainage occurs leading to gas or water cone formation that reduces hydrocarbon production efficiency
Solution Approach 1:
The flow control device segments the fluid flow path into multiple controlled passages (first passage, second passage, third passage) with different flow characteristics. Each passage handles specific fluid components or flow directions, allowing independent control of drainage patterns to prevent cone formation while maintaining overall system functionality.
Solution Approach 2:
The device introduces an intermediary flow control mechanism between the wellbore and production zones. This intermediary structure mediates the fluid flow by distributing it through multiple passages and annular spaces, controlling pressure gradients to achieve even drainage and prevent harmful cone effects.
2Reliability
If flow control passages are added to manage fluid flow, then even drainage is achieved, but the device structure becomes more complex
Solution Approach 1:
The device merges multiple flow control functions into a single integrated enclosure structure. The first, second, and third passages are combined within one enclosure with shared annular spaces, allowing uniform drainage control through a unified structure rather than separate distributed devices.
Solution Approach 2:
The enclosure structure serves multiple functions simultaneously: it contains multiple passages for different flow paths, creates annular spaces for pressure control, and provides a unified housing for the entire flow control device. This multi-functionality reduces the need for additional separate components.
3Ease of operation
If pressure reduction is implemented through multiple passages, then fluid flow control is improved, but the device requires more components
Solution Approach 1:
The device employs a nested structure where the first, second, and third passages are arranged concentrically or in nested configurations within the enclosure. The annular spaces are formed between these nested passages, allowing efficient space utilization and simplified assembly while maintaining multiple flow control paths.
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 effectively controls fluid flow, reducing pressure and ensuring even drainage across production zones, thereby enhancing hydrocarbon production efficiency by minimizing gas and water cone issues.
Implementation Method 1
The first passage may include a first inlet configured to reduce a pressure of the fluid flowing through the first inlet. Also, the second passage may include a second inlet configured to reduce a pressure of the fluid flowing through the second inlet.
Data Source
AI summary
A fluid flow control apparatus includes a flow path that conveys the fluid into a wellbore tubular, a first passage formed along the flow path, an annular space receiving the fluid from the first passage, and a second passage receiving fluid from the annular space. The passages may flow the fluid in an axial direction along the flow path. The apparatus may include an enclosure that receives a sleeve in which the passages are formed. The annular space may be formed between the sleeve and the enclosure. The passages may include an inlet that reduces a pressure of the fluid flowing through the inlet. The passages may include a bore and may include parallel conduits. The first and the second passages may convey the fluid in a first axial direction, and the annular space may be configured to convey the fluid in a direction opposite to the first axial direction.