The method 11 wherein said {TAIL ~ fluid} includes a brine selected from {HEAD ~ the group} consisting of NaBr, KCl, NaCl, CaBr2, and CaCl2 
The method 11 wherein said { TAIL ~ fluid } includes a brine selected from { HEAD ~ the group } consisting of NaBr , KCl , NaCl , CaBr2 , and CaCl2
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH