Modular Fluid End Housing for High-Pressure Wear Repair
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Solution Overview
Problem
Conventional fluid ends used in hydraulic fracturing operations experience frequent failures due to extreme pressures, vibrations, and abrasives, leading to short operational lifetimes and the need for frequent replacements.
Innovation Solution
The development of a fluid end assembly with a modular housing design, featuring multiple sections that can be easily replaced, and a system of stay rods and fasteners to secure the power end, enhancing structural integrity and reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional fluid ends are used under extreme pressures and vibrations, then they can deliver high volumes of highly pressurized fluids, but they experience frequent failures and short operational lifetimes
Solution Approach 1:
The housing is divided into multiple replaceable sections (first section, second section, third section) that can be independently replaced. This segmentation allows worn sections to be replaced without replacing the entire housing, thereby extending operational lifetime while maintaining high fluid delivery capability.
2Strength
If the housing is made as a single integral piece, then structural integrity is maintained, but replacement of worn parts requires replacing the entire housing, increasing downtime and costs
Solution Approach 1:
The housing is segmented into multiple sections that are joined together to form an integral structure during operation, maintaining structural integrity. When wear occurs, only the affected section needs to be replaced, significantly reducing repair time and costs compared to replacing the entire housing.
Solution Approach 2:
The stay rods extend through multiple housing sections, with each section nested along the longitudinal axis. This nested arrangement allows the sections to work together as a unified structure during operation, while enabling independent replacement of individual sections when needed.
3Ease of repair
If modular sections are used to facilitate replacement, then maintenance time is reduced, but the device complexity increases
Solution Approach 1:
The housing is segmented into standardized sections that can be independently replaced. The segmentation is designed to simplify maintenance by allowing quick replacement of worn sections, and the standardized design minimizes the increase in device complexity.
Solution Approach 2:
The multiple housing sections are designed with universal characteristics, allowing any section to potentially replace another if wear occurs in a different location. This multi-functionality reduces the need for multiple specialized parts, balancing ease of repair with device complexity.
Data Source
AI summary
A fluid end assembly having a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section has a housing made of multiple-piece construction. One or more pieces of the housing are configured to have a plurality of stay rods attached thereto. The stay rods interconnect the fluid end assembly and a power end assembly.