In-Line Fluid System

A method of driving fluid flow from a well, the method comprising:

• arranging a fluid system within a pipe residing outside of the well and connected in a pipeline, the fluid system comprising:
• a motor in a hermetically sealed housing comprising a rotor supported to rotate on a rotational axis and comprising a power cable extending through a sidewall of the pipeline;
• a fluid end coupled to the hermetically sealed housing and comprising a fluid end inlet and an impeller supported to rotate on the rotational axis;
• a seal carried by the fluid system downstream from the fluid end inlet and sealing a space between the fluid end and an inner wall of the pipe;
• and
• a magnetic coupling configured to couple the rotor to the impeller;
• fluidically coupling the pipe in a pipeline arranged outside of the well;
• and
• driving, by the fluid end, fluid flow in the pipe.

A fluid production system comprising:

• a plurality of pipes of a pipeline, the pipeline fluidically connecting a wellhead to one or more destinations;
• and
• a fluid system, comprising:
• a motor in a hermetically sealed housing comprising a rotor supported to rotate on a rotational axis, the hermetically sealed housing configured to reside within a pipe of the plurality of pipes and the motor comprising a power cable extending through a sidewall of the pipe;
• a fluid end coupled to the hermetically sealed housing and comprising a fluid end inlet and an impeller supported to rotate on the rotational axis, the fluid end configured to reside within the pipe;
• a seal carried by the fluid system downstream from the fluid end inlet and configured to seal a space between the fluid end and an inner wall of the pipe;
• and
• a magnetic coupling configured to couple the rotor to the impeller to drive the fluid end via the motor.