| 摘要 |
The present invention relates, in general, to equipment utilized in conjunction with operations performed in subterranean wells and, in particular, to an expansion cone assembly for setting a liner hanger in a subterranean wellbore having a casing string previously installed therein. Provided is an expansion cone assembly (200) for setting a liner hanger. The expansion cone assembly (200) includes a cone mandrel (202) having an outer frustoconical surface (220); a lead cone (206) having a frustoconical surface (228) with a maximum outer diameter (230), the lead cone (206) being slidably disposed around the cone mandrel (202); and a collapsible cone (204) slidably disposed at least partially around the outer frustoconical surface (220) of the cone mandrel (202). In an expansion configuration of the expansion cone assembly (200), the outer frustoconical surface (220) of the cone mandrel (202) radially props the collapsible cone (204) such that it has a first maximum outer diameter (232) that is greater than the maximum outer diameter (230) of the lead cone (206). In a retrieval configuration of the expansion cone assembly (200), the collapsible cone (204) axially shifts relative to the outer frustoconical surface (220) of the cone mandrel (202) such that the collapsible cone (204) has a second maximum outer diameter (234) that is no more than the maximum outer diameter (230) of the lead cone (206). |
