Annual Bop for Oilfield

Annular BOP is usually matched with ram BOP, and also, can be used separately, used to seal a variety of shapes and sizes of the kelly, drill pipe,drill pipe sub,drill collar,casing etc; When there is no drilling tool, can be completely close the wellhead. With the conditions of using buffer energy storage,Through 18°/35°no thin buckle butt welded joint, forced tripping.
The annular BOP is only a transitional equipment in shut-in,not sealing with a long time; should use the ram BOP when sealing well for a long time.

Working pressure :2,000psi ~ 15,000psi
Nominal Size :7 1/16”~ 21 1/4"
Working Medium :oil, gas, mud, Gas containing H2S, CO2
Working Tem.:T-75(-59℃~121℃)
Material Class :45K~75K