Removable Grid Shaker Screen for Composite Frame Reuse
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Solution Overview
Problem
Existing shaker screens in oilfield drilling operations often require the entire composite frame to be discarded when the filtering elements wear out, leading to wastage of resources and increased costs due to the need for new frames.
Innovation Solution
A pre-tensioned composite shaker screen design featuring a removable grid and filtering elements that can be detached and replaced, allowing the composite frame to be reused with new screen assemblies, and methods such as heat staking or ultrasonic welding for attaching and detaching these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the entire composite frame is discarded when filtering elements wear out, then the shaker screen can be replaced quickly, but resources are wasted and costs increase
Solution Approach 1:
The shaker screen is divided into separate components: a reusable composite frame and replaceable screen assemblies (containing filtering elements and grids). This segmentation allows the frame to be retained and only the worn screen assemblies to be replaced, eliminating frame material waste while maintaining quick replacement capability.
Solution Approach 2:
The invention enables recovery and reuse of the composite frame by separating it from the consumable screen assemblies. The frame is retained and reused across multiple screen assembly replacements, while only the worn-out screen assemblies are discarded, thereby reducing material waste and costs.
2Loss of substance
If the composite frame is made durable for reuse, then costs are reduced, but the attachment mechanism for screen assemblies becomes more complex
Solution Approach 1:
The screen assemblies are pre-tensioned and pre-assembled with filtering elements and grids before being attached to the frame. This preliminary preparation simplifies the attachment process to a straightforward connection operation, avoiding complex mechanisms while enabling frame reuse.
Solution Approach 2:
The invention replaces complex mechanical attachment mechanisms with simpler connection methods such as clamps, clips, or bayonet-style connectors. These simplified mechanisms provide sufficient durability for frame reuse without introducing excessive complexity, achieving a balance between reusability and simplicity.
3Ease of repair
If the grid is made removable for cleaning and replacement, then maintenance is improved, but the structural integrity of the screen assembly may be compromised
Solution Approach 1:
The screen assembly is segmented into the grid, filtering elements, and frame components. This segmentation allows the grid to be removed for cleaning and replacement while maintaining the overall structural integrity of the assembly through proper reattachment to the frame, combining maintenance accessibility with structural strength.
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 design enables the reuse of the composite frame, reducing waste and costs by allowing only the worn-out screen assemblies to be replaced, while also enabling adjustments to the separation efficiency for different drilling conditions.
Implementation Method 1
methods such as heat staking or ultrasonic welding for attaching and detaching these components
Implementation Method 2
methods such as heat staking or ultrasonic welding for attaching and detaching these components
Data Source
AI summary
A shaker screen including a composite frame, a removable grid attached to the composite frame, and at least one filtering element attached to the removable grid is disclosed. A method including forming a composite frame, forming a removable grid, attaching at least one filtering element to the removable grid, and attaching the removable grid to the composite frame is disclosed. Additionally, a method for rebuilding a shaker screen, the method including removing a first screen assembly from a composite frame, the screen assembly having a removable grid and at least one filtering element, and attaching a second screen assembly to the composite frame is disclosed.