Expandable liner hanger system and methodology

A system, comprising:

• a setting tool for providing fluid under pressure to set a downhole device in a borehole, the setting tool comprising:
• a setting tool body forming an interior, which extends longitudinally therethrough, and a pressure port in communication with the interior;
• and
• a pressure booster having a solid walled structure with a longitudinal passage extending through the solid walled structure, the pressure booster being slidably received in the interior and sealably coupled with the setting tool body by a plurality of seals having different diameters, the plurality of seals being arranged to create a pressure chamber positioned to discharge fluid under pressure through the pressure port as linear movement of the pressure booster occurs relative to the setting tool body, the linear movement being caused by application of pressure to the interior of the setting tool body.

A method, comprising:

• positioning a solid walled pressure booster within a setting tool body in a manner providing a setting tool with a longitudinal passage extending through the solid walled pressure booster and the setting tool body;
• releasably coupling the setting tool with an expandable liner hanger having an expandable metal hanger body between non-plastically deformable ends;
• conveying the expandable liner hanger and the setting tool downhole into a borehole via a tubing string;
• expanding the expandable metal hanger body by applying pressure down through the tubing string until the pressure booster is shifted longitudinally within the setting tool body;
• and
• utilizing a pressure chamber and a plurality of different pressure booster diameters to intensify the pressure acting on the expandable metal hanger body relative to the pressure applied down through the tubing string to thus plastically deform the expandable metal hanger body.