Casing patch seal

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4660863
SERIAL NO

06758370

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A casing patch for providing a connection between two casing sections which comprise a body means adapted to fit over an existing casing in a well bore and guide the patch into place, a slip means actuated by upward movement of the second casing section to tightly connect the two casing sections, and a seal means also actuated by upward movement of the second casing section for sealing the connection to pressure of fluids, under conditions of high pressure and temperature. The seal comprises a lead ring inside the casing patch surrounding the existing casing and a cylindrical seal arranged below the lead ring and having a central section of a deformable material and two end sections of wire mesh.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
SMITH INTERNATIONAL INC (A DELAWARE CORPORATION)16740 HARDY HOUSTON TX 77032

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bailey, Thomas F Houston, TX 116 6284
Shah, Nehal M Houston, TX 3 274

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