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Threaded Connections
BEN-EUI-FGL™
Integral, Upset, Semi Premium, Injection String, Production Tubing, Special Clearance, Coatable
The BEN‑EUI‑FGL is Benoit®’s semi‑premium tubing connection engineered as a high‑performance replacement for API EUE 8RD, specifically designed for use with Fiber Glass Liner (FGL) and Glass Reinforced Epoxy (GRE) systems. The integral joint design eliminates the coupling and J‑area complications, and a precision‑machined internal groove allows proper engagement with liner rings and flanges to ensure the integrity of the corrosion barrier. The BEN‑EUI‑FGL offers the same smooth OD and ID transitions as the standard BEN‑EUI, making it suitable for injection operations where connection clearance and lined tubing are required
Performance & Sizes
| Size range | 2.375″ – 4.500″ |
| Tension | 100 % |
| Compression | 60 % – 70 % |
Testing Performed
- API RP 5C5 / ISO 13679 CAL II Modified
- Frac Cycle
- Sealibility
- Limit Load
- Finite Element Analysis
- Field Proven
Key Features
- Flush inside diameter enables easy lining operations
- Optimized groove & lining assembly that does not sacrifice tension or internal pressure
- Slimmer connection O.D. than an API coupling
- Integral connection design reduces leak paths compared to API & eliminates coupling‑based running issues
- Dual shoulders provide smooth O.D. & I.D. for consistent running operations with no chance of getting stuck
- Low interference thread form reduces hoop stress & allows for multiple make‑and‑breaks without galling