Well Screen Channel for Control Line Clearance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Downhole well screens do not provide clearance for hydraulic and electrical control lines, making it impossible to operate valves and other downhole equipment effectively.
Innovation Solution
A subterranean well screen with a longitudinally extending external channel is created by plastically deforming the screen to accommodate control lines, allowing them to pass through while maintaining structural integrity and filtration functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the well screen is designed to fill the entire wellbore for optimal filtration, then filtration effectiveness is improved, but clearance for control lines is lost
Solution Approach 1:
The well screen is segmented into multiple functional zones: a first region with conventional filtration structure, a second region with the longitudinally extending channel for control lines, and a third region returning to conventional filtration. This segmentation allows the screen to provide both optimal filtration and control line clearance simultaneously by dividing the structure into specialized sections.
Solution Approach 2:
The channel region is created by plastically deforming only a localized portion of the well screen, creating a specific zone with different structural properties (reduced thickness) while maintaining the original filtration structure in other areas. This local modification provides control line clearance without compromising the overall filtration effectiveness of the screen.
2Ease of operation
If the well screen structure is modified to accommodate control lines, then control line clearance is improved, but structural integrity may be compromised
Solution Approach 1:
The channel is formed by plastic deformation during the manufacturing process, before the well screen is installed in the wellbore. This preliminary formation of the channel ensures that the structural integrity is maintained during installation and operation, as the deformed structure is already set and stabilized before encountering operational loads.
Solution Approach 2:
The channel region utilizes a thin-walled structure formed by plastic deformation, which provides sufficient structural integrity while accommodating control lines. The deformed metal structure acts as a flexible yet strong containment that protects control lines while maintaining the screen's overall strength.
3Adaptability or versatility
If the well screen is deformed to create a channel, then control line accommodation is improved, but manufacturing complexity increases
Solution Approach 1:
The plastic deformation process utilizes the inherent properties of the metallic well screen material to form the channel structure. The material's plasticity allows it to be deformed into the desired channel shape while maintaining structural integrity, essentially using the material's own properties to create the required geometry without additional complex manufacturing steps.
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
Enables the successful integration of control lines within the well screen, enhancing the operational capabilities of downhole equipment by providing necessary clearance without compromising the screen's ability to filter and protect from abrasion.
Implementation Method 1
The screen can be formed in a conventional manner and then plastically deformed to create a longitudinally extending channel for to provide clearance for a control line
Data Source
AI summary
A downhole well screen has a base pipe with a filter mounted thereon with the filter comprising plurality of spaced layers including a screen layer. A longitudinally extending channel is formed in the well screen by plastically deforming the filter. The channel is selected to be of a size and shape to accommodate well control lines.