Remote Control Hydraulic Anti-jack and Anti-blowout Device for Tubing Tripping

To prevent the accidents of kick, blowout and tubing jack during tubing string tripping in workover operation, the remote control hydraulic anti-jack and anti-blowout device has been developed. The device, using hydraulic plug-in plugging technology, could both quickly plug tubing and switch channels within the tubing to ensure the well killing needs. The whole set of device, which is remotely hydraulic controlled, could achieve mechanical automatic control when the tubing jacksand the overflow occurs,and reduced labor intensity feature without personnel operation on the wellhead. During the simulation of the overflow in the tubing,alignment, plug-in and plugging the tubing was completed in 34 seconds. The automatic control and remote control of the device contribute to the safe production, environmental protection and labor intensity reduction.