Patent ID: 7624805

Claim:
A method of inhibiting corrosion in a conduit having a metallic surface exposed to produced subterranean formation fluids, the method comprising introducing into the conduit a corrosive inhibiting effective amount of at least one compound of the formula: wherein: R 1 is independently H, —[—C n H 2n O—] a —H, or an alkyl group having from 1 to about 24 carbon atoms; R 2 is independently H or —[—C n H 2n O—] b —H, or an alkyl group having from 1 to about 24 carbon atoms; R 3 is —C d H 2d —[—OC n H 2n —] e —, R 4 is independently H or —[—C n H 2n O—] f —H, R 5 is independently H or —[—C n H 2n O—] g —H, a is from about 1 to about 8; b+f+g is between 0 to about 30; d is from about 1 to 6; e is from about 1 to about 8; and n is 2 or 3 and inhibiting corrosion of the metallic surface of the conduit, wherein the subterranean formation fluids are produced during matrix acidizing, acid fracturing, pickling or acid washing.