{HEAD ~ The lower end} of the tieback member will seal in the interior of {TAIL ~ the casing hanger} 
{ HEAD ~ The lower end } of the tieback member will seal in the interior of { TAIL ~ the casing hanger }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL