wellhead equipment: annual blowout preventer

wellhead equipment
annual blowout preventer
type: 1835; 1870; 2835; 2870;
3535; 3570 and 5414

annual blowout preventer:wellhead equipment 
type:1835,  1870, 2835, 2870, 3535,  3570 and 5414.

 

Technical parameter

1)bore size: 7-1/16"-26-3/4"

2) material: 35CrMo OR 25CrNiMo

3)working pressure: 2000PSI--15000PSI

 

 A blowout preventer is a large, specialized valve used to seal, control and monitor oil and gas wells. Blowout preventers were developed to cope with extreme erratic pressures and uncontrolled flow emanating from a well reservoir during drilling