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Threaded Connections
BEN-HSF™
Integral, Semi Flush Joint, Upset, Premium, Refrac Liner, Special Clearance
The BEN‑HSF is a hybrid semi‑flush connection purpose‑built for 3.250″ tubing used in refrac liner applications subject to extreme thermal and mechanical loading. Its design incorporates an upset box end to increase cross‑sectional strength without sacrificing clearance inside a 4.500″ casing.
Performance & Sizes
| Size | 3.250″ OD with 3.500″ upset box |
| Tension efficiency | 84 % |
| Compression efficiency | 84 % |
Testing Performed
- API RP 5C5 / ISO 13679 CAL II Modified
- Frac Cycle
- Sealibility
- Limit Load
- Finite Element Analysis
- Field Proven
Key Features
- Two‑step tapered design offers deep stabbing and fast make‑up operations.
- 3.250″ pipe with 3.500″ upset box O.D. maintains clearance inside 4.500″ casing.
- Internal metal‑to‑metal seal optimized and proven 100 % gas tight.
- Center shoulder provides consistent running operations with a positive stop.
- True flush inside diameter with mating internal shoulders creates zero turbulence.
- Low interference threadform enables multiple make‑and‑breaks without galling. --- *The sections above add detailed, verbatim information for numerous Benoit® products—including completion accessories, flow control tools and threaded connections—captured directly from the Benoit® Inc. website. Each product entry includes descriptions, specifications, testing performed (where available) and lists of features copied word‑for‑word from the product pages.*