HYDRAULIC CHRISTMAS TREE PROTECTOR Russian patent published in 2025 - IPC E21B33/03 

FIELD: mining.

SUBSTANCE: invention relates to equipment for sealing production wellheads. Disclosed is a hydraulic Christmas tree protector containing a fixed lower plate fixed on a flange of a hollow housing, which is a T-joint equipped with a branch with a manual gate valve and made with possibility of its mounting on the flange of the stem part of the Christmas tree. Hollow rod rigidly fixed on the upper movable plate and equipped with a transition flange for connection to the flange of the nozzle of the pressure line for hydraulic fracturing is introduced into the inner cavity of the housing through the central hole of the lower fixed plate. On the upper end of the upper movable plate symmetrically relative to the vertical axis of the rod, the first and second hydraulic cylinders are installed, the rods of which are brought out through the holes made in the upper movable plate, and are fixed on the fixed lower plate. In addition, the protector is equipped with a hydraulic station, to the pressure line of which a hydraulic distributor is connected, which is connected in its turn to the piston and rod ends of the first and second hydraulic cylinders, and a pressure gauge. Hydraulic station contains an electric motor, a pump connected to the output shaft of the electric motor, a control unit and a tank with an oil heater, a thermal relay and a float level sensor. At that, electric motor and oil heater are connected to power outputs of control unit of hydraulic station, made on the basis of microcontroller, to measuring inputs of which there are connected outputs of pressure gauge, thermal relay and float level sensor.

EFFECT: improving safety of operations at the well.

5 cl, 3 dwg