A gas burner assembly for heating a subsurface formation includes an oxidant conduit, a fuel conduit, and a plurality of {HEAD ~ oxidizers} coupled to {TAIL ~ the oxidant conduit} 
coupled to
A gas burner assembly for heating a subsurface formation includes an oxidant conduit , a fuel conduit , and a plurality of { HEAD ~ oxidizers } coupled to { TAIL ~ the oxidant conduit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL