... results in fluid movement through the pump to equalize pressures between the casing and tubing. Such flow and pressure differences can result in rotation of the PMM. The rotation speed and thus the voltage generated by the PMM depend on variables such as stage geometry, the number of stages...

... Abstract Operators and manufacturers of ESP equipment have generally overlooked the consequences of high productivity on the operation of Electrical Submersible Pumps (ESP's). The high productivity itself causes issues such as the difficulty to identify correct rotation when starting an ESP...

... and retrievability. The enabling components include a radial passive magnetic bearing (PMB) system, allowing for a contact-less bearing system and remote removal of rotating components, and magnetic vibration sensors (MVS), enabling prognostics for higher reliability. An MDS ESP preliminary design has been...