Spotlight on New Technology Awards
Welltec®
Booth # 1963
Well Cleaner® PST
Sand cleanouts are typically performed with either slickline bailers or coiled tubing (CT). In high angles, CT cleanouts can break down bridges but rarely achieve circulation rates to remove all the sand, leaving it spread over the wellbore, while sometimes forcing sand back into perforations. An innovative solution sponsored by StatoilHydro and Shell has been developed by Welltec®. The Well Cleaner® PST (Power Suction Tool) is run on electric-line, and is more effective at recovering sand and debris from producing wells.
With its large drawdown, this new system is able to lift sand into long bailer sections and is capable of bailing up to one metric ton of sand per run. By comparison, slickline bailers recover between 4-9 liters of sand. The new cleaning system provides a cost benefit over "heavy" pipe solutions due to less mobilization of people and equipment.
The Well Cleaner PST® takes in well fluid and solids, filters out the solids and returns cleaned fluid to the wellbore. It is a flexible bailer system with sizes ranging from 3 1/2" to 7" OD. Different inlet nozzles can be applied to pick up sand on low side as well as break through massive sand bridges that have built up.
