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US 10,442,916 B2Granted
Stator compound having an NBIR terpolymer elastomeric base and stators and downhole motors using the same
AssigneePV Fluid Products, Inc.
InventorGary Stephen Kyker
Life of this patent
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Abstract
A stator compound including an acrylonitrile butadiene isoprene rubber (NBIR) terpolymer elastomeric base.
Claims15
A method of making a stator compound, comprising:
- during a first mixing stage, mixing a high reinforcing carbon black with an elastomeric base at a temperature below about 300 degrees Fahrenheit without curing agents to produce a mixture, wherein the elastomeric base has one or more rubber components, wherein the only rubber components of the elastomeric base are acrylonitrile butadiene isoprene rubbers (NBIR);
- and
- during a second mixing stage, mixing curing agents into the mixture.
A stator for use in a downhole motor or pump and having a stator liner, the stator liner formed of a stator compound having an elastomeric base, the elastomeric base having one or more rubber components, wherein the only rubber components of the elastomeric base are acrylonitrile butadiene isoprene rubbers (NBIR).
Dependencies are inferred from the claim text.