The job began with extensive planning carried out by the operations team. A systems integration test demonstrated the 238 Well Cutter’s ability to cut both 3.5” and 4.5” tubing on the surface.
A Well Tractor® 218 was used to convey the Well Cutter® 238 through parts of the tubing. Upon reaching the location between the two punched holes in the tubing at approximately 9666 ft and correlating the location, the cutting blades were engaged. The Well Cutter® cut the 4-1/2” tubing successfully in under six minutes with the tubing under compression. The client then successfully retrieved the tubing to surface.
The client was extremely impressed with the Well Cutter’s performance for a number of reasons, including the tool’s ability to cut the 4.5” tubing under compression without using the rig to put the tubing in tension and Welltec’s skill at accurately correlating the cut between the two punched holes at the client’s specified depth. Additionally, the fast cut left a smooth, bevelled surface, making it easier to fish the tubing and re-complete the well. Furthermore, running this operation on e-line with a mechanical cutter reduced the HSE risks logistical issues associated with explosive and chemical cutters.
WELL TYPE: PRODUCER
PRESSURE: 4200 PSI at 9705ft
MAXIMUM DEPTH: 21,850 ft MD
TEMPERATURE: 190°F at 9705 ft