The tool string included a customized standoff to ensure that the orientation of the Welltec® Puncher was at either 90 or 270 degrees from the horizontal well axis. Additionally, a Well Hardware Scanner was also used in combination with the Well Cutter® and Welltec® Puncher to confirm the puncher’s orientation. During the run, the Well Cutter® cut the 7” tubing, and the Welltec® Puncher drilled six holes with a 12mm drill. Drilling took only 30 seconds per hole and achieved enough flow to meet the client’s objectives. The customized standoff oriented the puncher to the lateral side of the tubing, and the Well Hardware Scanner confirmed that the orientation was at 270 degrees.
This successful operation was the first time the Welltec® Puncher was used. It worked in combination with the Well Cutter® to cut the 7” tubing and ensure that the flow through the cut was sufficient to kill the well, all in one run. Sufficient flow was achieved after the puncher drilled six holes. Moreover, the Well Hardware Scanner ensured correct orientation, thereby protecting the casing and also confirmed there was no casing damage. The combined use of these tools resulted in an accurate and safe operation.
By choosing the combined Well Cutter® and Welltec® Puncher for this operation, the client did not need to mobilize explosive cutters or punchers. This reduced the amount of required deck space on the vessel. It also reduced the risk to both personnel and equipment by avoiding explosives handling. Finally, the client saved critical time by successfully completing two tasks during the same run. This consolidation saved the client over 12 hours in operational time while also reducing total cost.