The Well Cutter was selected for this operation as not only could it overcome the scale challenge but also it could eliminate the need for a polishing trip with drillpipe to dress the top of the cut pipe. On location, Welltec® ran the 318 Well Cutter down to the target depth, correlated, and started the cut. In only 50 seconds, the pipe was severed with clear indications of the cut from several of Welltec’s indicators. These included output from an accelerometer and head tension which provided clear movement of the tubing with fixed toolstring inside as the pipe parted. Correlating this information with the tool current and voltage response gave clear evidence to the field engineer that the cut had been made in less than 1 minute.
This 50-second operation represents a new world record for the fastest cut made with the Well Cutter, despite the challenges posed by scale deposits. The entire operation was performed very efficiently and required only one field engineer on site. The engineer had data on hand during the job which provided real time confirmation of the operation, allowing the operator to begin focusing on the next steps instead of waiting to see the results. Creating a clean, polished cut enabled the operator to avoid a polishing trip with drill pipe, further increasing efficiency and driving down costs.