Patent ID: 8881811

Claim:
A method comprising: providing an acidic treatment fluid comprising: a base fluid, an acid, and a silica scale control additive; wherein the silica scale control additive comprises at least one substance selected from the group consisting of a polyaminoamide dendrimer, a polyethyleneimine, a carboxymethylinulin, a polyacrylate, a polyallylamine, a copolymer of polyacrylamide, a polyallyldimethylammonium chloride, any combination thereof, and any derivative thereof; contacting at least a portion of a subterranean formation with the acidic treatment fluid in a remedial operation; and allowing the acidic treatment fluid to interact with silica scale buildup in the subterranean formation so that at least a portion of the silica scale buildup is removed and a concentration of soluble silica in the treatment fluid is about 500 mg/L or more by weight after interacting with the silica scale buildup, whereby precipitation of new silica scale buildup from the treatment fluid is suppressed by the silica scale control additive.