The structure is divided into an annular blowout preventer with a spherical plastic core, an annular blowout preventer with a tapered plastic core, and a blowout preventer with a tube-shaped plastic core. Annular BOP top cap and housing are connected by bolts or claw blocks.

Blowout preventer with a spherical plastic core and dust-proof ring.

Performance characteristics: reasonable structure, easy operation, long life of plastic core, adapt to a wide range, capable to seal pipe string with nominal paths from 0-DN in and shapes, better performance by combining with ran blowout preventer in the use.

Working Principle:

When wells must be sealed in case of kicks high pressure (10.5Mpa) oil from control systems enters into close-cavity under piston from housing oil outlet, to promote plastic core moving upward along ball surface, so that bearing tendons move closer to each other to move the rubber between them to the center of wellhead so as to seal drilling tools or fully seal wellhead. In the opening, hydraulic pressure oil enters into the open cavity above the piston from the housing inlet, to push the piston moving downwards, so that plastic will reset with its own elasticity, wellhead will be open.

BOP parts that we supply all come from original manufacturers, they are 100% interchangeable/

BOP PART NAME: top sealing, front sealing, pipe ram, blind ram, slip ram, shear ram, spherical packer, bonnet, piston, shell.

APPLY TO BELOW BOP:

Brand: HYDRIL , SHENKAI BOP. RONGSHENG BOP ETC OTHER FAMOUS BRAND BOP

Type: Annular BOP, Single Ram BOP, Double Ram BOP, Shear Ram BOP

Standard: API Spec 16A,16C
Working pressure:2000psi-15000psi(14 Mpa-105Mpa)
Operating temperature:-18deg--121deg
Bore size:7 1/16"-21 1/4"
Top & bottom connection:Flanged, studded