Multiphase pumping system

A pumping system comprising:

• a motor;
• and
• a pump connected to the motor, wherein the pump includes a rotatable shaft and at least one stage, wherein the at least one stage comprises:
• a stationary diffuser, wherein the diffuser comprises:
• a diffuser hub;
• a plurality of diffuser vanes;
• and
• one or more diffuser ports extending through the diffuser hub;
• and
• a rotatable impeller, wherein the impeller comprises:
• an impeller hub connected to the shaft, wherein the impeller hub includes a centrally disposed eye;
• a plurality of impeller vanes;
• and
• one or more recirculation passages extending through the impeller hub, wherein the recirculation passages are in fluid communication with the one or more diffuser ports.

A centrifugal pump having a rotatable shaft and at least one turbomachinery stage, wherein the at least one turbomachinery stage comprises:

• a stationary diffuser;
• a rotatable impeller connected to the shaft;
• and
• a gas accumulation reduction system, wherein the gas accumulation reduction system comprises:
• one or more diffuser ports extending through the diffuser hub;
• and
• one or more recirculation passages extending through the impeller hub, wherein the recirculation passages are in fluid communication with the one or more diffuser ports.