{TAIL ~ The tieback member} carries a locking device which will engage an annular groove formed in the bore of {HEAD ~ the wellhead housing} 
{ TAIL ~ The tieback member } carries a locking device which will engage an annular groove formed in the bore of { HEAD ~ the wellhead housing }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD