This paper describes a high-pressure/high-temperature (HP/HT) expandable liner hanger product that offers metal-to-metal and elastomer sealing capabilities at the liner top in the host casing. The system delivers increased hanging capacity and seal integrity for installing casing strings of various lengths. The expansion process is achieved using a multipiston hydraulic running tool with pressure application to displace an expander inside the hanger body.
Expandable Technology
Expandable technology provides operators an alternative to conventional liner hanger and packer systems that typically use slips and cone components configured on the outer diameter of a hanger body that require translation of the slips onto the cone for installation of the liner hanger in the host casing. Conventional liner-top packer systems typically also require drillstring weight for the mechanical force required to energize a sealing element that produces the annular seal between the liner and host casing strings.
