Abstract: A device is provided for positively locating within a profile, wherein the device includes one or more radially resilient locator mechanisms; one or more slips; one or more packing elements; and a stopping mechanism; wherein the one or more locator mechanisms are radially expandable to locate within the profile and wherein the stopping mechanism prevents engagement of the one or more slips and the one or more packing elements unit the one or more locator mechanisms are located in the profile. A method is also provided for applying downhole isolation.

Abstract: An intervention tool is provided having one or more packing elements; said device being moveable between a first position in which the device is positively locatable within a profile, and a second position wherein the device is settable in a blank casing that lacks a profile, wherein movement between the first position and the second position is controlled by axial movement of the intervention tool. A device is further provided for positively locating within a profile, wherein said device comprises one or more locator mechanisms; one or more slips; one or more packing elements; and a stopping mechanism; wherein said one or more locator mechanisms are locatable within said profile and wherein said stopping mechanism prevents engagement of said one or more slips and said one or more packing elements unit said one or more locator mechanisms are located in the profile.