Weatherford launches new version of Rotaflex long-stroke pumping unit

Multinational oilfield service company Weatherford International has launched a new Rotaflex long-stroke pumping unit to offer improved artificial-lift efficiency to operators.

The latest version of the Rotaflex pumping unit is suitable for challenging applications including deep, high-volume and high gas-to-liquids wells.

The new Rotaflex design, which is aimed at reducing lifting costs and expediting the transition to high-performance rod-lift, is an extension of the functionality of a technology that has been installed at multiple sites globally, the US-headquartered company noted.

Weatherford International Production president Kyle Chapman said: “For decades, our customers have relied on Rotaflex pumping units to quickly transition from short-term, early lift methods to high-performance rod-lift systems.

“We have spent the past few years talking with users, learning how we can make our Rotaflex units even more effective for them – and we are very pleased to start putting our optimised Rotaflex units to work in the field.”

The company noted that the units apply long pump strokes of up to 36.5ft, which offer more time for the entry of fluids into the pump intake before being lifted to surface.

The ability of Rotaflex design to deliver fewer strokes per barrel at a constant velocity ensures increased equipment run life, mitigates downhole failures and decreases deferred production.

Several features have been incorporated in the new Rotaflex unit that improve lift efficiency, including a purpose-built 350-series gear reducer and enhanced top drum.

Additionally, the company made various enhancements to the unit in an effort to improve reliability and maintainability, including a built-in rollback system, greater accessibility, an enhanced lubrication system and a revised ladder system.