Fluid Routing Plug Assembly for Modular Fluid End Erosion Control
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Solution Overview
Problem
Conventional fluid ends used in hydraulic fracturing operations experience frequent failures due to extreme pressures, vibrations, and erosion from proppants, leading to short operational lifetimes and high maintenance costs.
Innovation Solution
A modular fluid end assembly design featuring a multi-piece housing with interchangeable sections, a fluid routing plug, and wear-resistant components to distribute pressure and reduce erosion, allowing for selective replacement of worn parts without replacing the entire assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluid ends are used in hydraulic fracturing operations, then high pressure fluid delivery is achieved, but frequent failures occur due to extreme pressures, vibrations, and erosion from proppants
Solution Approach 1:
The fluid end is divided into multiple interchangeable sections (e.g., barrel sections, piston sections) that can be independently replaced. This segmentation allows worn components to be replaced without discarding the entire fluid end assembly, thereby extending operational lifetime while maintaining reliability under extreme pressures and proppant erosion.
Solution Approach 2:
Wear-resistant materials or coatings are applied specifically to areas most susceptible to proppant erosion, such as the barrel interior and piston surfaces. This localized enhancement of material properties protects critical surfaces from harmful erosion while allowing other non-critical parts to be made of standard materials, improving overall reliability without unnecessary cost.
2Reliability
If the entire fluid end assembly is replaced when components wear, then reliability is restored, but maintenance costs increase significantly
Solution Approach 1:
The fluid end assembly is designed with modular, interchangeable sections that can be independently replaced. When wear occurs in a specific section (e.g., barrel or piston), only that section needs to be replaced rather than the entire assembly. This segmentation directly reduces maintenance costs while restoring reliability, as operators can replace individual worn components without discarding functional parts of the assembly.
Solution Approach 2:
Worn or damaged sections are discarded and replaced with new or reconditioned sections, while the remaining functional sections are recovered and reused. This approach minimizes material loss and reduces maintenance costs by maximizing the utilization of still-serviceable components, thereby extending the overall operational life of the fluid end assembly.
3Duration of action of stationary object
If modular interchangeable sections are implemented, then maintenance costs are reduced and operational life is extended, but device complexity increases
Solution Approach 1:
The fluid end is segmented into standardized interchangeable sections with uniform connection interfaces. While segmentation does increase structural complexity compared to a monolithic design, the standardization of interfaces and the use of simple mechanical connection mechanisms (e.g., threaded connections, retaining rings) minimize the complexity increase. The modular structure enables extended operational life through selective replacement of worn sections without requiring complex assembly or specialized tools.
Solution Approach 2:
Multiple sections are designed with universal, interchangeable interfaces that allow any section to fit any corresponding position in the assembly. This universality simplifies the modular design by reducing the number of unique interface types, making the modular system easier to maintain and extend operational life without proportionally increasing complexity. A single set of standardized components can service multiple positions in the assembly.
Data Source
AI summary
A fluid routing plug for use with a fluid end section. The fluid end section being one of a plurality of fluid end sections making up a fluid end side of a high pressure pump. The fluid routing plug is installed within a horizontal bore formed in a fluid end section and is configured to route fluid throughout the fluid end section.