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US 2018/0238114 A1Published application
Method of forming stators for downhole motors
AssigneeBaker Hughes Incorporated
InventorsWitali Huber, Gunnar Michaelis, Carsten Hohl, Erik Bartscherer, Harald Grimmer, Christian Fulda, Dorothea Marion Fischer, Thorsten Regener
Life of this patent
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Abstract
A method of making a stator includes positioning an inner tubular member having an inner surface within an outer tubular member, installing a rigid mandrel within the inner tubular member, and applying a compressive force to at least one of the inner tubular member and the outer tubular member.
Claims20
A method of making a stator comprising:
- positioning an inner tubular member having an inner surface within an outer tubular member;
- installing a rigid mandrel within the inner tubular member;
- and
- applying a compressive force to at least one of the inner tubular member and the outer tubular member.
1 more element
A Moineau system configured for use in a downhole environment comprising:
- an inner tubular member comprising a first metallic material having an outer surface and a helically lobed inner surface integrally formed with the inner tubular member;
- and
- an outer tubular member comprising a second metallic material that is different from the first metallic material, wherein the inner tubular member is connected to the outer tubular member by a form fit, the inner tubular member and the outer tubular member forming a stator of the Moineau system.
Dependencies are inferred from the claim text.