External Casing and Tubing Patches are designed to repair damaged casing or tubing strings quickly and economically, without reducing the ID. The casing or tubing string must be removed to a point below the damaged section. The top of the casing or tubing stub is then dressed with a milling tool, and the patch is run over the casing or tubing to a depth sufficient to engage the slip.

The external casing patch is available in standard and slim hole types. The slim hole version is ideal for small, restricted wellbores, or for use below a restriction.

Features and Benefits:

• Available with lead or packer-type sealing mechanisms
• Extensions for underwater wellhead applications available for packer-type patches
• Simple, economical installation
• Does not restrict casing ID
• CRA (corrosion-resistant alloys) and low-yield alloys available for sour service wells by special order
• Available in standard and slim hole versions

Applications:

• Restoring integrity to damaged tubulars in regular or slim hole sections

Ordering instructions, please specify:

• Casing or tubing size and top connection
• Actual casing OD
• Pressure requirements
• Regular or slim series. Regular series should be ordered where clearances permit

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