Blowout preventer milling assembly

摘要

A blowout preventer milling assembly for milling a gasket surface in a blowout preventer. The blowout preventer assembly can have legs, a support frame mounted to the legs, and a pair of support frame rails mounted to the support frame located on opposite sides of the gasket surface. The blowout preventer milling assembly can have a support frame actuator to move a bridge frame on support frame rails. The bridge frame can have bridge rails and a bridge frame actuator for moving a spindle holder on the bridge rails. A pneumatic spindle for calibrating and cutting the gasket surface is provided. A portable controller communicates through a network with the support frame actuator, the bridge frame actuator, a power supply, and a client device to control the movement of the pneumatic spindle to mill the gasket surface of the blowout preventer.

主权项

1. A blowout preventer milling assembly for milling a gasket surface in a blowout preventer, the blowout preventer milling assembly comprising:
a. a first leg and a second leg, wherein each leg is removably connected in a first groove and a second groove of the blowout preventer, wherein each groove is on an opposite side of the gasket surface; b. a support frame; c. a first support frame rail and a second support frame rail, with the first support frame rail parallel to the second support frame rail; d. a support frame actuator mounted to the support frame; e. a bridge frame; f. a first bridge rail and a second bridge rail, the first bridge rail parallel to the second bridge rail, with the first bridge rail and the second bridge rail mounted on a first side of the bridge frame; g. a spindle holder mounted to the bridge frame; h. a bridge frame actuator mounted to the bridge frame, wherein the bridge frame actuator moves the spindle holder along the first and second bridge rails at a 90 degree angle to the first and second support frame rails; i. a pneumatic spindle comprising a calibration head and a cutting head, wherein the pneumatic spindle is removably mounted in the spindle holder and is connected to a pneumatic air supply providing operational air pressure; and j. a portable controller in communication with the support frame actuator, the bridge frame actuator, a network, and a power supply, wherein the portable controller comprises:
(i) a portable controller processor;(ii) a portable controller display in communication with the portable controller processor; and(iii) a portable controller data storage in communication with the portable controller processor, wherein the portable controller data storage comprise:
(1) a library of gasket sizes to identify a size of a gasket;(2) computer instructions in the portable controller data storage to instruct the portable controller processor to calibrate the pneumatic spindle prior to cutting the gasket surface;(3) computer instructions in the portable controller data storage to instruct the portable controller processor to operate the pneumatic spindle to cut the gasket surface after calibration; and(4) computer instructions in the portable controller data storage to instruct the portable controller processor to enable a client device connected to the network to control the blowout preventer milling assembly from a remote location; andwherein the portable controller controls movement of the pneumatic spindle by using the support frame actuator to control movement on an x-axis and using the bridge frame actuator to control movement of the pneumatic spindle on a y-axis.