The annular BOP

The annular BOP is named because of its well sealing rubber core annular element. Well sealing, in the control system to control the pressure, an annular rubber core was forced to hole center, surrounded by drill, so as to realize the well sealing, effectively prevent blowout accidents, safety construction, and it is often ram blowout preventer supporting the use of.

Annular blowout preventer functions:

1, when there is no drill hole, annular preventer for closed wellhead (Feng Ling).

2, when the drill tools in hole, casing, wire rope, cable, can be closed wellhead.

3, for different size of wellhead suspension, different sections of the drill can achieve a good seal.

4,Butt welded drill pipe is  with 18 ° slope joints in closed, forcibly tripping.

About Us

Drilltech Manufacturing Company is a professional company engaged in R&D, design manufacturing of blowout preventers (BOP), diverters, electromagnetism eddy current brakes and hydraulic disc brakes and Silicon control rectify system(SCR) for offshore and onshore drilling operations.We have provided our products and services applied in offshore platforms,land rigs well testing,well test mining,coal bed methane extraction,shale gas exploitation,to many countries Such As the United States, Norway, Canada, Russia, Iran, Dubai, India, Indonesia, Azerbaijan and others.The quantity of well control systems we supplied specializing in drilling platform has been ranked third in the world.Among our products,49 1/2” diverter for offshore drilling operation is the most remarkable which has been patented with 9 items,Moreover,Drilltech is the second supplier that owns this technology after the GE company in the world.

Our Factory

Contact Us

  • DRILLTECH MANUFACTURING CO.,LTD.
  • +86 15532811817dtc11@drilltech.cn
  • Xinhua industrial zone, Juguan county, Xinhua District, Cangzhou City, Hebei Province, CHINA.
  • Copyright © 2026 DRILLTECH MANUFACTURING CO.,LTD.