{HEAD ~ The method} 1, wherein {TAIL ~ about 0.005 to about 0.4 pore volumes} of solution containing a sacrificial agent is injected into the formation 
{ HEAD ~ The method } 1 , wherein { TAIL ~ about 0.005 to about 0.4 pore volumes } of solution containing a sacrificial agent is injected into the formation
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH