Welltec® Puncher operation successfully completed
WELL TYPEOil, cased hole
MAX. TEMPERATUREAbove 150-175°C / 300-350°F
PRESSUREBelow 12 kpsi / 830 bar
The client needed enough flow through the cut to ensure that the well could be killed. The operator anticipated the tubing cut to be performed in compression, potentially making flow through the cut more difficult. An explosive puncher was arranged as a contingency solution. The client planned for Welltec to make the tubing cut with the Well Cutter which can cut pipe in compression and then pull out of hole to determine if the flow through the cut was sufficient. This process would result in an extra run in case the flow had to be increased.
To avoid the potential use of an explosive cutter, Welltec proposed to combine the Well Cutter with the Welltec Puncher® in the same run. A non-explosive tool, the Welltec Puncher equalizes the pressures between tubular strings and can create several holes in the tubing at selected depths.
During the run, the Well Cutter cut the 7” tubing, and the Welltec Puncher drilled six holes with a 12 mm 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 (WHS) confirmed that the orientation was at 270°.
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.
Efficient, safe drill pipe, liner, tubing and casing recovery operations without the need for explosives. The Well Cutter uses a rotating head to remove pipe incrementally, which prevents the creation of shavings.
The Welltec® Hardware Scanner (WHS) is a part of the Welltec diagnostic tools family. It measures the relative changes to the magnetic field caused by the changes in the magnetic surroundings.
The Welltec® Puncher provides an efficient, e-line conveyed, non-explosive method for equalizing pressures between tubular strings. Its innovative design quickly creates a large diameter hole in the tubular at the target depth