System and methodology comprising composite stator for low flow electric submersible progressive cavity pump

A method, comprising:

• assembling a stator for an electric submersible progressive cavity pump with a composite structure having an outer housing;
• a thermoset resin disposed along an interior of the outer housing and presenting an interior surface formed in a helical thread pattern;
• and an elastomeric layer of generally uniform thickness disposed along the helical thread pattern of the interior surface of the thermoset resin, wherein the elastomeric layer is secured to the thermoset resin via an elastomer bonding layer located between the elastomeric layer and the thermoset resin, the elastomer bonding layer comprising a polybutadiene;
• and
• inserting a rotor into the stator such that an outer surface of the rotor engages the elastomeric layer and cooperates with the helical thread pattern to create cavities along which a fluid can be pumped when the rotor is rotated relative to the stator.

A system, comprising:

• a composite stator for use in an electric submersible progressive cavity pump, the composite stator comprising:
• an outer housing;
• a thermoset resin layer located within the outer housing and secured to the outer housing, the thermoset resin layer having an internal surface formed as an internal thread;
• and
• an elastomeric layer located within the thermoset resin layer, the elastomeric layer being formed as an extruded tube of generally uniform thickness, the extruded tube being positioned within the thermoset resin layer so as to have a shape which follows the internal thread,
• wherein the elastomeric layer is secured to the thermoset resin layer via an elastomer bonding layer located between the elastomeric layer and the thermoset resin layer, and
• wherein the elastomer bonding layer comprises a polybutadiene.