The second fracturing fluid comprises the base fluid, sand, possibly a crosslinker, and one or {HEAD ~ both} of {TAIL ~ an adhesive and consolidation agent} 
of
The second fracturing fluid comprises the base fluid , sand , possibly a crosslinker , and one or { HEAD ~ both } of { TAIL ~ an adhesive and consolidation agent }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL