Metal-to-metal, gas-tight casing repair system
Simplify casing repairs to keep drilling programs on schedule and secure well integrity for P&A.
Metal-to-metal, gas-tight system
Technical engineers answer common questions about integrated liner tieback performance, applications, and best practices
The integrated liner hanger tieback system is a fully anchored metal-to-metal seal created by expanding the tieback directly to the liner system. A traditional tieback is typically a floating seal anchored by mechanical devices or cement.
The pressure is generated by multiplying regular rig-supplied pressure using a downhole high-pressure intensifier located within a hydraulic expansion tool.
No, all pressure required for the operation is contained within the expansion tool.
Yes, this system has multiple installations in demanding operations in the North Sea.
The system is removed with standard fishing techniques.
Yes, materials for sour service applications are available for NACE carbon steels and exotic nickel alloys.
Operator avoids costly casing misrun to execute well design of choice and saves an estimated 5 days of rig timeRead Case Study
Conventional options to tie back a liner to surface include cementing the tieback string in place or using hydraulic double-grip anchors, midstring packers, or floating seal assemblies. These solutions typically require
The fully integrated premium system eliminates these concerns to deliver the single solution you need to protect a parent casing during high-pressure testing operations, accommodate a narrow pore pressure window during installation, or address tubing movement concerns. The technology is also useful in remedial applications such as scab or stub liners.
The combined technology eliminates hydraulic anchors, midstring packers, and cemented tiebacks while delivering permanent, gas-tight seals between the tieback receptacle and the tieback string.