Patent ID: 9702229
Date: 2017-07-11
CPC Classifications: E21B

Claim:
1. An expandable liner hanger system for forging a pressure seal and hanging of a liner weight against an outer casing string in a wellbore, the expandable liner hanger system comprising: the outer casing string; an inner casing string positioned within the outer casing string and having an inner diameter; elastomeric seals and metal-to-metal locking ridges that circumscribe the inner casing string selectively form a sealing interface between the inner casing string and the outer casing string; an elongated inner string tool selectively insertable into the inner casing string and having a torque locking sleeve that removably couples with the inner casing string; an expansion cone slidable along the inner string tool and having a diameter greater than the inner diameter of the inner casing string so that when the expansion cone is urged into the inner casing string, the larger diameter cone deforms the inner casing string radially outward into engagement with the outer casing string, wherein the expansion cone has a pressure equalization hole that provides fluid communication between a bottom portion and a top portion of the expansion cone; and a hydraulic force intensifier having an end coupled with the expansion cone, so that when fluid is introduced into the intensifier, the intensifier pushes the expansion cone into the inner casing string.