Category:

C-21

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.

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.

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