Patent ID: 8343897

Claim:
A hydrocarbon well treatment composition comprising a carrier liquid and a polymer formed from a diallyl ammonium salt of formula (I): wherein R 1 and R 2 are each independently hydrogen or unsubstituted organic radicals having from 1 to 20 carbon atoms; wherein each R is independently selected from hydrogen or organic radicals having from 1 to 20 carbon atoms; and wherein X is a counterion, and a monomer comprising one carboxylate group and a monomer comprising at least two carboxylate groups or an anhydride group, wherein said polymer comprises an end group selected from —SO 4 H, —SO 3 H, —H 2 PO 3 , —H 2 PO 4 or anionic derivatives thereof, and wherein the concentration of said polymer in said carrier is 6 to 50% wt.