1)To preventer high-pressure oil water and sand from blowing out upwards,
2) According to : API Spec 16A
3) H2S

BOP Stack for Sand Washing

BOP Model: FZ(H)7.6-21

Main technical parameters:

Bore:3" (Φ76mm)

Range of ram size:Tubular Plastic core, pipe ram

Dimensions:28.189×12.589×44.567 (in)

                  716×320×1132 (mm)

Weight:280kg (617.294 LB)

From the complection to oil extraction, water injection or oil pumping, more and more sand of oil wells will accumulate at the bottom of well, as a result, oil and water wells will bring less production, less injection or evev stop, so it is necessary to carry out sand washing operation for oil wells. During sand washing operations, in order to prevent high- pressure oil water and sand from blowing out upwards, the Company has designed special blowout preventer unit for sand washing operation.