In accordance with {TAIL ~ the process}, an aqueous alkaline chemical solution is introduced into or formed in the well bore penetrating {HEAD ~ the formation} 
In accordance with { TAIL ~ the process } , an aqueous alkaline chemical solution is introduced into or formed in the well bore penetrating { HEAD ~ the formation }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD