Tieback Stem

Install new casing strings to cover abrasive wear or protect a weak casing string against shut-off or extreme production pressure

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Description

Our tieback stem provides the possibility to install a new casing string to cover abrasive wear caused by drilling or corrosion or to protect a weak casing string against shut-off or extreme production pressure. Additionally, it can also be used to isolate a leaking liner.  

A typical tieback liner system includes a tieback string with a tie back stem below, which is inserted in an existing polished bore receptacle. 

Features and benefits

  • Mule shoe configuration supports stabbing and facilitates reentry with well intervention tools 
  • Available from 6 to 30 ft 
  • High-pressure, high-temperature (HP/HT) seals 
  • Flow optimized gage and shear ring to protect the seal stack during installation 

Applications

  • Tieback strings to surface 
  • Cemented tieback string 
  • Scab liners 
  • Tieback packer runs with liner-top packer 

Materials

  • L80, T95, P110, Q125, 22Cr 125ksi 
  • Other materials on request 
Resources

  • Longest and Heaviest Geothermal Liner Hanger Installation Case Study

  • Successful Germany Geothermal Liner System Installations Case Study

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