The patented Production Riser Tensioner (PRT)® from Control Flow’s WesTech Heavy Machinery Operation can produce savings in excess of seven days per well. This patented tool allows rapid transition from drilling to completion activity by allowing the entire marine riser and BOP to remain in the water during well testing / completion operations, avoiding the need to pull and re-run the BOP / marine riser at the conclusion of completion operations. Through this technique, BOP tripping time is eliminated when running and setting Subsea Trees, Production Risers, or during completion, intervention and abandonment operations. The PRT® offers a replacement for cable and sheave riser tensioning systems. The unit is designed to run through and hang off in the rig’s rotary table.
The PRT® provides up to 1,500,000 pounds of tension and up to 45 feet of motion compensation. Measuring 55-ft in total length, the PRT® weighs less than 60 metric tons and is stored on deck, when not in service, much like a standard telescopic joint. The system is designed for year-round operations in normal and heavy weather operations.