Abstract
A new/patented production optimization technology is presented proposing the use of downhole peristaltic pumps as a new artificial lift system for oil and gas wells.
The new approach, conceptualized by Perez Romero in 2017 and patented in 2020, is based on the principle of Peristalsis with wave-like movements on a flexible conduit pumping wellbore fluids from underground reservoirs to surface. This is achieved with the radial compression of a hose by pressurized fluid pumped from surface through smaller diameter tubing adjacent to the production string installed in the well, and its subsequent expansion when reducing pressure in the downhole pump hydraulic chamber(s). A support in U-shape between the hose and the downhole pump housing is required to prevent the hose from bending, promote radial compression of the hose also in U-shape, and displace fluids from intake to discharge.
The use of peristaltic pumps as reference for the new pumping system enabled the conceptualization of a simple downhole solution with capability to handle sandy production, no gas interference, no rod string moving along the well, no downhole electric motor, potential to handle high deviation well profiles, and initial lifting/pumping potential of 200-500 barrels of liquid per day.
