STATORS FOR DOWNWHOLE MOTORS, METHODS FOR FABRICATING THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME
First Claim
1. A method of fabricating a stator for a downhole motor, the method comprising:
- providing a stator tube having an interior surface;
applying a bonding agent to the interior surface of the stator tube;
positioning a mandrel within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator;
introducing a reinforcing material into the stator tube to fill space between the mandrel and the interior surface of the stator tube;
solidifying the reinforcing material to bond the reinforcing material to the interior surface of the stator tube; and
removing the mandrel from the bonded stator tube and reinforcing material;
thereby fabricating the stator.
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Accused Products
Abstract
The present invention recites a method of fabricating a stator for a downhole motor, the method comprising the steps of providing a stator tube having an interior surface and applying a bonding agent to the interior surface of the stator tube. Additionally, a mandrel is positioned within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator. Furthermore, a reinforcing material is introduced into the stator tube to fill space between the mandrel and the interior surface of the stator tube and subsequently solidified to bond the reinforcing material to the interior surface of the stator tube, The mandrel is then removed from the bonded stator tube and reinforcing material such that a stator is fabricated.
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Citations
19 Claims
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1. A method of fabricating a stator for a downhole motor, the method comprising:
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providing a stator tube having an interior surface; applying a bonding agent to the interior surface of the stator tube; positioning a mandrel within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator; introducing a reinforcing material into the stator tube to fill space between the mandrel and the interior surface of the stator tube; solidifying the reinforcing material to bond the reinforcing material to the interior surface of the stator tube; and removing the mandrel from the bonded stator tube and reinforcing material; thereby fabricating the stator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A stator for a downhole motor, the stator comprising:
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a stator tube including an inner surface; and a solidified reinforcing material bonded to the inner surface, the solidified reinforcing material having an inner surface defining an internal helical cavity including a plurality of internal lobes.
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17. A downhole motor comprising:
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a stator comprising; a stator tube including an inner surface; and a solidified reinforcing material bonded to the inner surface, the solidified reinforcing material having an inner surface defining an internal helical cavity including a plurality of internal lobes; and a rotor received within the stator. - View Dependent Claims (18, 19)
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Specification