{HEAD ~ Method} of saving {TAIL ~ string} of tools installed in an oil well and a corresponding transmission assembly 
of saving
{ HEAD ~ Method } of saving { TAIL ~ string } of tools installed in an oil well and a corresponding transmission assembly
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH