METHOD FOR TREATING PRODUCTION WATER FROM A METHOD FOR ENHANCED OIL AND/OR GAS RECOVERY

• Main Authors: FAVERO, Cédrick, GIL, Ludwig
• Format: Patent
• Language: English; French
• Published: 01.02.2018
• Subjects: ADHESIVES; CHEMISTRY; DYES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PAINTS; POLISHES; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The present invention concerns a method for treating the production water originating from enhanced hydrocarbon recovery, and containing one or more hydrosoluble polymers and Fe2+ ions, consisting of at least partially oxidising the Fe2+ ions by introducing at least one reaction activator and oxygen into said production water, the molar ratio of introduced oxygen to Fe2+ ions being less than or equal to 0.25. La présente invention concerne un procédé de traitement de l'eau de production provenant de la récupération assistée d'hydrocarbures, et contenant un ou plusieurs polymères hydrosolubles et des ions Fe2+, consistant à oxyder au moins partiellement les ions Fe2+par introduction d'au moins un activateur de réaction et d'oxygène dans ladite eau de production, le rapport molaire oxygène introduit/ions Fe2+ étant inférieur ou égal à 0.25.