Tieback Sleeve for PBR

　　The Tieback Sleeve for Polished Bore Receptacle (PBR) features a precision-honed sealbore designed for reliable tieback connections into liners using either a tieback seal stem or a tieback packer. This robust tool also provides the necessary extension for setting integral liner-top packers, ensuring a secure and efficient completion process.

　　Engineered for durability, the Tieback Sleeve for PBR safeguards the running-tool assembly during downhole operations, with optional debris-protection systems available for enhanced performance in challenging environments.

　　Key Features:

　　• Chamfered upper end for smooth entry and alignment.

　　• Threaded lower connection with dual lock-wire technology to prevent loosening, making it ideal for drilldown applications.

　　• High-integrity sealbore for dependable pressure isolation.

　　• Enhanced debris resistance (optional add-on system available).

　　Designed for reliability in demanding well conditions, the Tieback Sleeve for PBR ensures seamless liner tiebacks while maximizing operational efficiency.

　　Material: All API 5CT Grade Steel

　　Tieback Liner

　　A tieback liner is an additional section of casing (liner) used to connect the initially installed liner and liner hanger system back to the wellhead. Typically, after the initial liner is set and cemented, the decision to perform a tieback is made based on operational requirements.

　　Tieback Liner Function:

　　• Casing Remediation & Integrity Restoration – Tieback liners are deployed to repair compromised or deteriorated casing strings above the existing liner, restoring wellbore structural integrity.

　　• Preservation of Casing Integrity Post-Drilling – Installing a tieback liner upon completion of drilling operations ensures an unexposed, pristine casing string, free from the mechanical stresses and wear induced during drilling.

　　• Enhanced Corrosion & Pressure Protection – Tieback liners provide an additional barrier against corrosive wellbore fluids and unexpected pressure fluctuations, safeguarding long-term well integrity.