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Threaded Connections
BEN-HSF-II™
Integral, Semi Flush Joint, Upset, Premium, Refrac Liner, Special Clearance
The BEN‑HSF‑II delivers next‑generation performance for refrac liners and slim‑hole completions. Engineered to provide increased connection strength while maintaining clearance inside 4.500″ casing, its upset‑end geometry improves cross‑sectional area for greater load‑bearing capacity under combined axial, pressure and thermal stresses. It is targeted for high‑intensity refrac environments.
Performance & Sizes
| Size range | 3.500″ – 4.000″ |
| Tension efficiency | 86 % |
| Compression efficiency | 86 % |
Testing Performed
- API RP 5C5 / ISO 13679 CAL II Modified
- Frac Cycle
- Sealibility
- Limit Load
- Finite Element Analysis
- Field Proven
Key Features
- Customer‑driven outside‑diameter solution for tight clearance wells.
- Metal‑to‑metal seal stronger than the pipe body and proven +100 % gas tight.
- Dual shoulders provide smooth OD and ID for consistent running operations.
- Flush inside diameter with mating internal shoulders reduces turbulence.
- Low interference threadform allows multiple make‑and‑breaks without galling.