Acid Fracturing Hose Composite Structure
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Solution Overview
Problem
Current acid fracturing technology using steel pipes is hindered by high costs, inflexibility, short service life, and vibration fatigue due to their weight and material limitations, which negatively impacts efficiency and safety.
Innovation Solution
An acid fracturing hose composed of layers including an ultra-high molecular weight polyethylene film, synthetic rubber, and high-strength steel wire layers, with specific layer arrangements and formulations for enhanced wear resistance, acid resistance, and pressure handling, replacing traditional steel pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel pipes are used for acid fracturing, then strength and pressure resistance are ensured, but weight is large, flexibility is poor, and service life is short
Solution Approach 1:
The patent applies composite materials by combining multiple layers including UHMWPE film, synthetic rubber, steel wire layers, and buffer layers. This composite structure achieves both high strength for pressure resistance and reduced weight compared to traditional steel pipes, while improving flexibility and service life.
2Strength
If steel pipes are used for acid fracturing, then pressure resistance is maintained, but assembly is difficult and service life is only about 500 hours
Solution Approach 1:
The multi-layer composite structure with UHMWPE film, synthetic rubber, steel wire layers, and buffer layers provides enhanced durability and corrosion resistance, extending service life beyond 500 hours while maintaining pressure resistance capability.
Solution Approach 2:
The patent changes material parameters by using UHMWPE with molecular weight ≥1.5 million and specific steel wire strength ranges (1630-2150 MPa for inner layers, 2150-2750 MPa for outer layers), optimizing both service life and pressure resistance performance.
3Stability of the object's composition
If steel pipes are used for acid fracturing, then structural integrity is ensured, but vibration fatigue occurs and inspection frequency must be high
Solution Approach 1:
The composite structure with multiple layers including buffer layers and steel wire layers provides superior vibration resistance and fatigue performance, reducing the need for frequent inspections every 200 hours while maintaining structural integrity throughout extended service periods.
4Duration of action of moving object
If steel pipes are used for acid fracturing, then durability is limited, but replacement cost is high
Solution Approach 1:
The multi-layer composite hose with UHMWPE film, synthetic rubber, steel wire layers, and buffer layers extends service life significantly beyond traditional steel pipes, reducing replacement frequency and overall replacement costs despite the sophisticated material composition.
Data Source
AI summary
An acid fracturing hose and a preparation method thereof, wherein, the acid fracturing hose includes an inner liner layer, an inner rubber layer, a first buffer layer, a reinforcing layer, a second buffer layer and an outer rubber layer from inside to out in sequence; wherein the inner liner layer is at least one layer of UHMWPE film, the reinforcing layer includes middle rubber layers and steel wire layers that are arranged at intervals, the inner rubber layer and the outer rubber layer are synthetic rubber, and the first buffer layer, the middle rubber layers and the second buffer layer are kiss-coating cord fabrics. The UHMWPE film is used as an inner liner layer, which can be integrated with an inner rubber layer and an outer rubber layer through a high temperature vulcanization process, and the inner liner layer is taken as an inner wall of the hose.