Annular preventers are designed to seal the wellhead with or without a pipe string during drilling and repair to ensure safe work, prevent blowouts from open fountains, and protect the subsoil and the environment. Annular preventers are made in 2 versions “A” and “B”.
Delivery set includes: preventer assembly, spare seals and cuffs, tools.
- Preventer operation – hydraulic (manual)
- Meets technical requirements API 16A
- Nominal size, mm (in): 180-430 (7 1/16-16 3/4)
- Work pressure, MPa (PSI): 35-105 (5000-15000)
- Service environment: oil, gas, solution, water
- Work temperature, °С: from -60 to +121
- Material class: АА, ВВ, СС, DD, ЕЕ, FF, НН
Specifications
| № | Type | Nominal size | Work pressure, MPa (PSI) | |||
| mm | in | 35 (5000) | 70 (10000) | 105 (15000) | ||
| 1 | UHP 180 | 180 | 7 1/16 | + | + | + |
| 2 | UHP 230 | 230 | 9 | + | + | + |
| 3 | UHP 280 | 280 | 11 | + | + | + |
| 4 | UHP 350 | 350 | 13 5/8 | + | + | + |
| 5 | UHP 430 | 430 | 16 3/4 | + | + | – |