A Wax Knife (Product Code 117)

The Rebco Wax Knife is a wireline-conveyed paraffin cutting tool designed to mechanically sever paraffin wax accumulations that have built up on the inner wall of the tubing string to a degree that restricts flow or prevents wireline tools from reaching total depth. Unlike a Gauge Cutter, which scrapes loose soft deposits from the bore wall, the Wax Knife uses hardened cutting edges to slice through and break apart thick, consolidated wax plugs or heavy paraffin buildups that cannot be dislodged by scraping alone. The tool is run through the wellbore and alternately raised and lowered with jarring action to cut through the accumulation in progressive passes. Multiple passes with progressively larger tools are used to restore bore clearance when the initial accumulation is severe. The Wax Knife is typically used in combination with a Wire Brush for a complete tubing cleaning program.

A Wire Brush (Product Code 117)

The Rebco Wire Brush is a wireline-conveyed tubing cleaning tool designed to remove soft paraffin deposits, scale films, and packing debris from the internal diameter of the tubing bore, nipple profiles, and other completion equipment prior to running subsurface controls. The tool body is a steel bar with a series of drilled holes at varying intervals along its length, through which wire brush cable segments are inserted and secured with grub screws. The protruding wire cable loops create an abrasive cylindrical brush profile that engages the tubing wall as the tool is run up and down through the bore, dislodging and loosening soft deposits that would otherwise interfere with the engagement or sealing performance of lock mandrels, plugs, safety valves, and other downhole controls.

The Wire Brush is particularly valuable for cleaning nipple profiles before running any device that requires a precise, clean seating or locking surface. Deposits in the profile grooves can prevent tools from setting correctly or cause them to set partially, with serious consequences during production operations. The tool is typically used as a first pass before the Gauge Cutter when moderate to heavy soft deposit buildup is expected, allowing the Gauge Cutter to perform its gauging and profiling function on a pre-cleaned bore.