Casing Hangers

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TechnipFMC offers dependable slip-type casing hangers that are available in automatic and non-automatic varieties. 

Casing hangers have three main functions: 

1. Suspend the casing load from a casing head or spool.
2. Centralize the casing string in the head or spool.
3. Provide a method to allow sealing against the inside of the wellhead to contain pressure in the annulus between its casing string and the previous string. In some cases, a separate seal ring or packoff bushing is necessary to provide the seal. 

TechnipFMC’s C-22 and C-29 automatic slip hangers have an integral, compression-type seal mechanism that automatically actuates with the weight of the casing string. In some situations, Lockdown Screws (LDS) may be used to provide additional setting load. The C-22 and C-29 style hangers use a split packing manufactured from nitrile or HNBR material. These materials cover both sweet and sour service applications (AA through HH). Our casing hangers meet API 6A’s PR1 or PR2 requirements. 

C-22 and C-29 Features: 

• Fits all Surface Wellhead C-22/C-29 casing heads and spools.  
• Designed to suspend typically encountered casing loads.  
• Provides automatic packoff sealing.  
• Only 50,000 to 60,000 pounds of casing load is normally needed to energize the annulus seal. 
• Hangers can be lowered through blowout preventers and landed before or after cement has set. 
• Incorporates spring-loaded latch and heavy-duty hinge. 
• Provides interlocking slip segments. 

TechnipFMC’s C-21 and C-24 non-automatic slip hangers do not have an integral or self-actuating seal mechanism, but instead have a separate seal ring, which must be mechanically locked in place. Non-automatic hangers are typically used when insufficient casing load is available or when cementing back to the surface. 

C-21 Features: 

• Fits all Surface Wellhead C-22/C-29 casing heads and spools. 
• Designed to suspend typically encountered casing loads. 
• Independently installed, interference-energized packoff sealing ring. 
• Slip and bowl assembly can be lowered through blowout preventers and landed before or after cement has set. 
• Incorporates split design with easily engaged latching cap screws. 
• Provides interlocking slip segments. 

*The product images shown are for illustration purposes only and may not be an exact representation of the product.