• Tieback Equipment  

    Milling and Cleaning Assembly  
     
    The tieback clean-out assembly consists of a tieback mill, spacer, and top dressing mill. The tie-back clean-out assembly has precision-fit, hardened blades to ensure a accurate cleaning of the polished bore receptacle (PBR). The top dressing mill removes burrs at the top of the PBR for damage-free entry of the seals of the tieback stem or BST packer.
    • Ground dressing surfaces clean honed PBRs without damaging seal surfaces
    • Drill-pipe connections on all components for maximum performance
     
    Tieback Stem
     
    The tieback stem enables installation of 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. The tieback stem 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.
     
    • Mule shoe configuration supports stabbing and facilitates reentry with well intervention tools
    • Available from 6 to 30 ft
    • HP/HT seals
    • Flow optimized gauge/shear ring to protect the seal stack during installation
     
    Tieback Stem with Cementing Ports and Orifice Float Collar
     
    The orifice float collar and tieback stem with cementing ports were designed to cement a tieback string to surface and provide a landing seat for cementing plugs (with auto-fill function). The cementation is done with conventional cementing plugs. After landing of the cementing plugs on the orifice float collar, the tie-back stem is run-in into an existing polished bore receptacle.
     
    •  Mule shoe configuration supports stabbing and facilitates re-entry with well intervention tools
    • Available from 6 ft to 30 ft
    • HP/HT seals
    • The orifice float collar serves as a bump for a cementing plug
    • Required for tie back cementing ports
    • The auto-fill function of the orifice float collar ensures that the Tie Back Stem can be stapped into the PBR successfully
    • PDC bits drillable internals
     

     

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