I. Enhanced Material Selection & Manufacturing Process
1. High-Strength Base Material
- Main body constructed from 304/316L stainless steel, refined through vacuum degassing to ensure material purity and minimize stress concentration risks from impurities.
- Critical pressure-bearing zones undergo localized induction hardening, achieving surface hardness of HRC 45-50 while retaining a tough core hardness of HB 280-320 for impact-resistant "hard exterior, tough core" performance.
2. Monolithic Precision Forming Technology
- Manufactured via forging + CNC precision machining:
- Forging eliminates internal voids and enhances metal grain continuity;
- CNC machining ensures transition radii ≥R5mm at tapered surfaces to prevent stress cracking;
- Internal bore surface roughness controlled to Ra≤1.6μm, reducing turbulent flow friction.
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II. Structural Innovation Analysis
1. Thickened Wall Design
- Wall thickness increased by 40%-60% versus conventional products (e.g., from 8mm to 12-13mm), improving collapse resistance by ≥35%;
- Features axial wall thickness gradient (thickest at inlet, progressively thinning toward outlet) to balance weight and wear resistance in high-sand-content formations or high-flow-rate drilling fluid conditions.
2. Tapered Body Erosion-Resistant Structure
- 12°-15° taper angle:
- Low-angle taper guides fluid smoothly, reducing direct impact on straight sections;
- Compound radius transition at taper-straight junctions dissipates vortex energy;
- Tested performance: Reduces erosion rate by 62% in slurry with 15% quartz sand at 3m/s flow velocity.
3. Long-Hole Flow Channel Hydrodynamic Optimization
- Aperture design:
- Oblong slots (8-10mm width × 30-40mm length) replace round holes, with aspect ratio 3:1-4:1;
- Channels angled at 22°-25° tangentially to induce helical fluid motion;
- CFD-verified results:
- Flow distribution standard deviation reduced by 48%, eliminating localized high-velocity jets;
- Peak wall shear stress decreased by 55%, significantly suppressing erosion.
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III. Expanded Application Scope
1. Extreme Condition Adaptability
- Ultra-deep wells: Thickened walls ensure collapse resistance (≥8,000m depth);
- Shale gas lateral sections: Long-hole flow channels inhibit cuttings bed accumulation, reducing stuck pipe risk;
- Offshore drilling: 316L stainless steel resists chloride corrosion, compliant with NACE MR0175.
2. Economic Benefits
- Reduces filter replacements by 3-4 runs/well, saving 8-12 hours rig time/well;
- Lowers lifecycle maintenance costs by 40% (spares + labor).
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IV. Maintenance Optimization
- Modular cartridge (if applicable):
- Quick-release latch system enables ≤15-minute replacement;
- Laser-etched material batch + service life QR code for precise maintenance;
- Monolithic construction:
- Provides ultrasonic thickness measurement reference surfaces for in-field wear monitoring.
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