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Thermally-energized-packer-cup

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Thermally energized packer cup

Details

Inventors: Payton, Jr., Donald G.;
Assignee: Sperry Corporation (New York, NY)
Primary Examiner: Purser; Ernest R.
Assistant Examiner: Starinsky; Michael
Attorney, Agent or Firm: Terry; Howard P.

In a geothermal production well, oil well or gas well, a thermally energized packer cup having a tapered elastomer body and a reinforcing element fabricated from a shape memory alloy seals the well casing when the packer cup is heated to the transformation temperature of the shape memory alloy.

DETAILED DESCRIPTION The apparatus of the present invention includes a packer cup having a tapered elastomer body and a reinforcing element which is fabricated into an original shape from a "shape memory alloy" such as nickel-titanium, gold-cadmium, or indium-thallium.
The packer cup is forced to assume a restrained shape and is inserted into a well casing using a mandrel or other device.
When heat is applied to the packer cup, the reinforcing element returns to its original shape, thereby causing the packer cup to seal the well casing.

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