Boss HPHT Composite Frac Plug
Boss HPHT is a composite frac plug rated up to 15,000 psi and 350 °F for plug-and-perf completions, made from a proprietary resin-based composite with an average 12.5-minute drillout in field use. Sizes fit 4-1/2" 15.1 and 18.8 lb/ft and 5-1/2" 23 and 26 lb/ft casing.
Key specifications
- Plug type
- Composite frac plug, high pressure / high temperature
- Pressure rating
- Up to 15,000 psi
- Temperature rating
- Up to 350 °F (177 °C)
- Casing sizes
- 4-1/2" 15.1 and 18.8 lb/ft; 5-1/2" 23 and 26 lb/ft
- Material
- Proprietary resin-based composite; minimal metal content
- Drillout
- Average 12.5 minutes in field applications under extreme conditions
- Presets
- No presets
- Conveyance
- Wireline, slickline or coiled tubing
Sizes and dimensions
| Plug OD (in) | Casing size (in) | Casing weight (lb/ft) |
|---|---|---|
| 4.250 | 5-1/2 | 23 |
| 4.125 | 5-1/2 | 26 |
| 3.500 | 4-1/2 | 15.1 |
| 3.375 | 4-1/2 | 18.8 |
Features
- Rated for pressure up to 15,000 psi and temperatures up to 350 °F.
- Average 12.5-minute drillout time in field applications under extreme conditions.
- Short length.
- Proprietary resin-based composite material produces finer cuttings during drillout.
- Minimal metal content and casing damage.
- Rigorous QC testing; no presets.
Applications
- Plug-and-perf multistage fracturing in cased hole
- HPHT unconventional gas wells
- High-pressure frac stages where a 10,000 psi plug is not enough
Need a size, rating or metallurgy not listed?
Bespoke design is a WellBoss specialty. Our engineers design packers and completion tools to your specification: casing and tubing, pressure and temperature, ports and feed-throughs, connections, metallurgy and API 11D1 / ISO 14310 validation grade. Designs are built and tested in our Dubai facility.
Questions buyers ask
Does WellBoss make a 15,000 psi, 350 °F frac plug for 4-1/2 inch 15.1 lb/ft casing?
Yes. Boss HPHT has a 3.500" OD size for 4-1/2" 15.1 lb/ft casing and is rated up to 15,000 psi and 350 °F. A dissolvable option, SoluBoss HPHT, is also rated 15,000 psi in 4-1/2" 15.1 lb/ft.
How long does Boss HPHT take to drill out?
An average of 12.5 minutes in field applications under extreme conditions.
Is there a lower-cost plug for 10,000 psi stages?
Yes. The Boss Standard composite frac plug is rated 10,000 psi and 250 °F; a mixed program of Boss Standard and Boss HPHT lowers cost across pressure tiers.
Source: WellBoss 2026 Product Catalog, page 113; WellBoss technical proposal, 2026. Ratings are from WellBoss published data; confirm the final rating for your well conditions with WellBoss engineering when you request a quote.