Disclosed are oleyl propylenediamine-based compounds used in compositions and methods for inhibiting corrosion. The method comprises introducing into a fluid source a composition comprising one or more oleyl propylenediamine-based compounds comprising Formula I: ##STR00001## wherein Y.sub.1, Y.sub.2, and Y.sub.3 independently are hydrogen or a substituent of Formula (II): ##STR00002## wherein V is —O— or —NH—, W is optionally present and is a linear or branched C.sub.1-10 aliphatic group, X is —H, —NZ.sub.3.sup.+, —COOH, —SO.sub.3H, —OSO.sub.3H.sub.2, —PO.sub.3H, —OPO.sub.3H.sub.2, or a salt thereof, each Z independently is hydrogen or a linear or branched C.sub.1-20 aliphatic group optionally interrupted or substituted with one or more oxygen atoms, and R is hydrogen or methyl, provided that at least one of Y.sub.1, Y.sub.2, or Y.sub.3 is a substituent of Formula (II).

A liquid corrosion inhibitor composition for use with acid compositions for use in industrial activities, said corrosion inhibitor composition comprising: a thiourea derivative; a first type of amphoteric surfactant is selected from the group consisting of: a sultaine surfactant; a betaine surfactant; and combinations thereof; a second type of amphoteric surfactant; and a solvent.

Disclosed herein is a novel class of multiple charged cationic or anionic compounds that are derived from an aza-Michael Addition reaction between a polyamine (Michael donor) and an activated olefin (Michael acceptor), methods of making the same, and use thereof. Also disclosed herein are the methods of using multiple charged cationic or anionic compounds disclosed herein in a reverse emulsion breaker composition to break reverse emulsion commonly found in a produced fluid in oil and gas operations. The disclosed REB methods or compositions are found to be more effective than those methods or compositions including commonly used for oil/solid and water separation.

A liquid corrosion inhibitor composition for use with acid compositions for use in industrial activities, said corrosion inhibitor composition comprising: a thiourea derivative; a first type of amphoteric surfactant is selected from the group consisting of: a sultaine surfactant; a betaine surfactant; and combinations thereof; a second type of amphoteric surfactant; and a solvent.

A volatile corrosion inhibitor composition comprising about 1 wt. % to about 100 wt. % of a polyacrylamide is disclosed that prevents corrosion of metal materials. A volatile corrosion inhibitor composition may also include a second volatile corrosion inhibitor selected from the group consisting of: ammonium salt, triazole, nitrite, nitrate, an amine carboxylate, an amine, a carboxylic acid, aldehyde, anhydride and any combination thereof. An anticorrosion method of a metal material using the volatile corrosion inhibitor composition is also disclosed.

Disclosed are oleyl propylenediamine-based compounds used in compositions and methods for inhibiting corrosion. The method comprises introducing into a fluid source a composition comprising one or more oleyl propylenediamine-based compounds comprising Formula I:

##STR00001##

wherein Y.sub.1, Y.sub.2, and Y.sub.3 independently are hydrogen or a substituent of Formula (II):

##STR00002##

wherein V is —O— or —NH—, W is optionally present and is a linear or branched C.sub.1-10 aliphatic group, X is —H, —NZ.sub.3.sup.+, —COOH, —SO.sub.3H, —OSO.sub.3H.sub.2, —PO.sub.3H, —OPO.sub.3H.sub.2, or a salt thereof, each Z independently is hydrogen or a linear or branched C.sub.1-20 aliphatic group optionally interrupted or substituted with one or more oxygen atoms, and R is hydrogen or methyl, provided that at least one of Y.sub.1, Y.sub.2, or Y.sub.3 is a substituent of Formula (II).

Disclosed are alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester used in compositions and methods for inhibiting corrosion. The alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester are reaction products of an alkyl lactone and an amine, and an alkyl lactone and an alcohol, respectively.

A process is provided for inhibiting the corrosion of metal that comes into contact with a static or flowing aqueous medium which comprises contacting at least a portion of the exposed surface of the metal with aqueous medium containing a metal corrosion inhibiting amount of at least one ureido silane and, optionally, one or more added inorganic and/or other organic materials.

Disclosed are alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester used in compositions and methods for inhibiting corrosion. The alkyl lactone-derived hydroxyamide and alkyl lactone-derived hydroxyester are reaction products of an alkyl lactone and an amine, and an alkyl lactone and an alcohol, respectively.

A method of inhibiting corrosion of metal in contact with a corrosive mixture in an oil or gas field environment involving introducing a corrosion inhibitor composition into the corrosive mixture, the corrosion inhibitor composition including a nitrogen-containing compound having an alkyl amine group or an alkyl quaternary ammonium salt group, and at least one sulfur-containing compound selected from the group consisting of mercaptobenzothiazole, mercaptobenzoimidazole, a thioglycol compound, and a thiourea compound.