Patent ID: 8069874

Claim:
An assembly for tapping a pressurized tubular in a subsea environment, the assembly comprising: a saddle to engage the tubular to be tapped, the saddle having a channel extending through a tool connection; a tapping tool having a shaft carrying a bit for tapping the tubular, the tapping tool being connectable to said tool connection for translating a rod that is coupled to the bit through the channel and into contact with the tubular, the tapping tool providing a bit advancing mechanism positioned away from an end opposite the bit, the bit advancing mechanism comprising, a drive sprocket threadably coupled to the rod, wherein the drive sprocket rotates in a first direction to advance the rod, and the drive sprocket rotates in a second direction to retract the rod; and a first motor coupled to the drive sprocket, wherein the motor rotates the drive sprocket in the first direction or the second direction; a guide tube coupled to the shaft of the tapping tool; an adjustable stop collar coupled to the guide tube, wherein the adjustable stop collar is positioned on the guide tube to provide a predetermined travel distance for the bit; sealing means positioned at the channel between the saddle and the tubular; a packing chevron coupled to the rod, wherein the packing chevron creates a seal; and a ratchet mechanism coupled to the packing chevron, wherein rotation of the ratchet mechanism compresses the packing chevron, the ratchet mechanism comprising, a drive gear coupled to a handle, wherein the handle is rotated to turn the drive gear; and a second gear coupled the drive gear, wherein the second gear causes the packing chevron to be compressed when the second gear is rotated in a first direction.