The method 2, wherein at least a portion of at least one of the fracturing fluid and the isolation fluid further comprises {HEAD ~ an acidizing fluid} for etching {TAIL ~ the formation} 
for etching
The method 2 , wherein at least a portion of at least one of the fracturing fluid and the isolation fluid further comprises { HEAD ~ an acidizing fluid } for etching { TAIL ~ the formation }
OTH 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 HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL