·Hydraulic blowout preventer supporting device, the control of well blowout, well pressure of main equipment. Through pressure relief effect of choke valve implement well pressure operation, replace the well of contaminated mud at the same time control wellhead casing pressure and tubing pressure, restore the mud column on bottom hole pressure control, stop the overflow;
·Through
pressure relief effect of choke
valve, it can reduce wellhead pressure, to achieve a "soft shut-in";
·Through the blowout preventer for large discharge effect, reduce wellhead casing pressure, protect the wellhead blowout preventer;
·Equipped with hydraulic control box, remote control.