DIMERCAPTOTHIADIAZOLES TO PREVENT CORROSION OF MILD STEEL BY ACID GASES IN OIL AND GAS PRODUCTS

Corrosion inhibitor compositions containing at least one sulfur compound and/or at least one aqueous-soluble salt of a sulfur compound inhibit or prevent mild steel corrosion by an acid gas such carbon dioxide (CO2) and/or hydrogen sulfide (H2S) in oil and gas production processes. The sulfur compou...

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Bibliographische Detailangaben
Hauptverfasser:	RAMACHANDRAN, Sunder, JOVANCICEVIC, Vladimir
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL DYES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NATURAL RESINS NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PAINTS POLISHES
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Beschreibung
Zusammenfassung:	Corrosion inhibitor compositions containing at least one sulfur compound and/or at least one aqueous-soluble salt of a sulfur compound inhibit or prevent mild steel corrosion by an acid gas such carbon dioxide (CO2) and/or hydrogen sulfide (H2S) in oil and gas production processes. The sulfur compound may be a compound comprising at least three sulfur atoms, at least one of which is a thioether functional group. One suitable, but non-limiting, sulfur compound having at least three carbon atoms is 2,5-dimercapto-1,3,4-thiadiazole and salts thereof. The pH of the corrosion inhibitor composition may be optionally adjusted to be within about 5 to about 10 using an alkali metal hydroxide and/or an amine.