| CPC E21B 47/09 (2013.01) [E21B 34/063 (2013.01); E21B 47/013 (2020.05)] | 23 Claims |

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1. An apparatus for determining a location of an inner string in an outer string of a downhole system, comprising:
an axis parallel to a longitudinal axis of the inner string; and
a tagging assembly disposed at a tagging location in the outer string, the outer string configured to be deployed into a borehole in a subterranean region, the inner string configured to be advanced through the outer string along the axis, the tagging assembly including:
a stop component made from a material having a brittleness and being disposed in the outer string and configured to obstruct axial movement of the inner string through the outer string at the tagging location, the stop component including an uphole side and a downhole side, the stop component configured to be displaced in response to an axial force applied to the stop component by the inner string, to permit the inner string to advance axially beyond the tagging assembly;
a force distribution component configured to distribute the axial force applied by the inner string upon contacting the tagging assembly, the force distribution component disposed on the uphole side of the stop component, the force distribution component made from a material having a brittleness that is less than the brittleness of the material of the stop component; and
an impact dampening component configured to dampen an impact of the inner string on the stop component, the impact dampening component disposed between the stop component and the force distribution component, and the impact dampening component made from a flexible material that is different than the material of the stop component.
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