Casing Hangers

The Casing Hanger is a wellhead component that provides a means to support and seal a casing string. These hangers are a wrap-around style and use slip segments that bite into the casing to support the entire casing load. Our hangers are available in all standard API casing sizes.

 

Functions:

• Slip Type Hangers
• Supports the casing by transferring the casing load to the load shoulder in the casing head or spool.
• Provides a sealing point around the casing and the casing head bowl to isolate the casing strings.
• Can be lowered through a full opening BOP stack into the wellhead.
• Latch bolt prevents accidental opening of the hanger during installation.
• C-22 and C-29 hangers provide an automatic pack-off seal that is energized by casing weight.
• C-21 hangers are used in conjunction with a separate pack-off plate and are used in low weight situations.
• C-21-P hangers incorporate a built-in seal that is manually activated by bolts on top of the hanger
• C-22 hangers require as little as 47,000 pounds of casing
  load to energize the seal (depends on casing size).
• C-29 hangers have stronger lower support plates and
  support greater casing loads.

Mandrel Type Hangers:

• Supports the casing by transferring the casing load to the load shoulder in the casing head or spool.
• Suspend the casing weight by means of threading the pipe to the lowermost threads in the hanger.
• Lift threads in the top of the hanger are used for landing and retrieving the hanger into the wellhead. ACME threads and a separate running tool can be used in place of the lift threads.
• Optional flutes allow for fluid bypass or taking returns & during cementing.
• Separate pack-off bushing- seals around the hanger neck and the wellhead bowl. In the MBS system it also serves to provide another load shoulder to support the next casing string.