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