Elastic Element Filter for Drilling Mud Separation
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Solution Overview
Problem
Existing devices for separating drilling mud in oil drilling operations face challenges in achieving high separation efficiency with a compact design, particularly in offshore conditions, where the openings of the filter element tend to clog, reducing efficiency and requiring frequent cleaning, especially when dealing with materials like 'gumbo' that are difficult to remove.
Innovation Solution
The device incorporates an elastic element that extends towards the filter surface, allowing the medium to be displaced while interacting with the surface, distributing the medium and opening up clogged openings, thereby improving separation efficiency and reducing clogging. This elastic element can be in the form of brushes or bands, arranged in specific configurations to optimize contact and pressure, and is made from materials like polypropylene to withstand drilling fluid chemicals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a compact filter device is used for in situ separation of drilling mud, then the device can be deployed in offshore conditions with limited space, but the openings of the filter element tend to clog, reducing separation efficiency
Solution Approach 1:
The elastic element automatically cleans the filter surface by springing against it during the displacement cycle, removing clogging material without requiring external intervention or frequent manual cleaning, thus maintaining separation efficiency in a compact device
Solution Approach 2:
The filter element is made displaceable rather than stationary, allowing it to move back and forth during operation. This dynamic movement combined with the elastic element enables continuous self-cleaning and prevents clogging, maintaining reliability in a compact configuration
2Device complexity
If the filter element is stationary, then the structure is simple, but the openings become clogged with medium between inlet and outlet, requiring frequent cleaning
Solution Approach 1:
The filter element undergoes periodic displacement in an endless cycle, creating repeated contact between the elastic element and filter surface. This periodic action continuously removes clogging material, preventing accumulation and reducing cleaning frequency despite simple structure
Solution Approach 2:
The displacement and springing action creates mechanical vibration and movement that dislodges clogging material from the filter openings, maintaining flow efficiency without complex cleaning mechanisms
3Reliability
If the elastic element contacts the filter surface continuously, then clogging is prevented, but the medium displacement from inlet to outlet is hindered
Solution Approach 1:
The elastic element is designed to spring intermittently rather than maintain continuous contact, allowing medium to flow through during displacement while periodically removing clogs. This dynamic interaction balances opening patency with efficient medium displacement
Solution Approach 2:
The springing action occurs periodically during the displacement cycle rather than continuously, creating windows of uninterrupted flow that maintain productivity while still preventing clogging accumulation over time
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
The solution enhances separation efficiency by distributing the medium and facilitating the passage of fluid through the filter element, reducing clogging and maintaining efficiency even in offshore conditions, allowing for effective separation of solid and liquid portions, including gases, with minimal maintenance requirements.
Implementation Method 1
The end portion of the elastic element is arranged to spring elastically in a direction parallel to the surface of the filter element
Data Source
AI summary
A device is for separating a medium comprising a mixture of a solid portion and a fluid portion. The device has a filter arrangement with a displaceable filter element having a plurality of openings that allow the fluid to be disposed through the openings while maintaining the solid portion on the filter element. The device further has an inlet for feeding the medium to the filter element and an outlet for discharging the solid portion from the filter element after that the fluid has been separated from the solid portion. The device further has an obstruction has an elastic element extending towards a surface of the filter element and adapted to contact the surface while allowing the medium to be displaced from the inlet to the outlet.