Rotary BOP is a necessary equipment for underbalanced drilling, geothermal drilling and coalbed methane drilling. It plays the role of sealing between the wellbore annulus and the drill string, provides safe and effective pressure control, and guides the fluid returned from the wellbore away from the wellhead. The development of this technology has expanded the application scope of underbalanced drilling technology, such as when the drilling characteristics such as closed circuit circulation, drilling while spraying, measurement while drilling, wellbore testing, reverse circulation and nitrogen injection change. The rotary blowout preventer is mainly composed of rotary assembly, shell, buckle barrel, etc. The rotary assembly is mainly composed of square tile assembly, center tube, bearing, seal, rubber core, etc.
Basic parameters
Nominal diameter: 11 ″, 13-5/8 ″
Static sealing pressure: 14Mpa, 35Mpa
Dynamic sealing pressure: 7Mpa, 17.5Mpa
Quantity of rubber core: 1, 2
Temperature grade of metal material: T-0, T-20, T-75
Suitable media: water, oil, natural gas, H2S
Executive standard: API 16A 3rd
