OBTAINING ACRYLIC-BASED RANDOM BIPOLYMERS WITH AMPHOTERIC FRAGMENTS FOR REMOVING AQUEOUS DISPERSIONS IN CRUDE OILS

• Main Authors: ZAVALA OLIVARES Gerardo, FUENTES SANTIAGO Jessica Valeria, ZAMORA GUERRERO Edgar Benedicto, VÁZQUEZ MORENO Flavio Salvador, GARCÍA MARTÍNEZ Jorge Alberto, TONCHEZ PÉREZ Karen Fernanda, FLORES SANDOVAL César Andrés, RODRÍGUEZ ARAUJO Gerardo Nicolás, PÉREZ ROMO Patricia, CEVADA MAYA Enrique, VARGAS MARTÍNEZ Citlally Janinne
• Format: Patent
• Language: English; Spanish
• Published: 19.08.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MINERAL WAXES; ORGANIC MACROMOLECULAR COMPOUNDS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to novel demulsifying agents obtained from the functionalization of alkyl acrylate and aminoalkyl acrylate-based random bipolymers with different acrylic derivatives, using the aza-Michael addition reaction, thus evaluating amphoteric random acrylic bipolymers as demulsifying agents for crude oils with API densities between 10°API and 40°API, showing superior performance as breakers, coalescers and clarifiers than the unfunctionalized acrylic bipolymer and a commercial formulation based on polyethers. The present invention aims to respond to the technological challenge represented by the development of demulsifying agents capable of efficiently removing emulsified water in crude oil and chemically resistant to acidic well-stimulation conditions. Con el fin de responder al reto tecnológico que representa el desarrollo de agentes desemulsionantes capaces de eliminar eficientemente el agua emulsionada presente en el aceite crudo y que además sean resistentes químicamente a condiciones de estimulación ácida de pozo, la presente invención consiste en nuevos agentes desemulsionantes obtenidos a partir de la funcionalización de bipolímeros aleatorios base acrilato de alquilo y acrilato de aminoalquilo con diferentes derivados acrílicos, empleando la reacción de adición aza-Michael. Los bipolímeros acrílicos aleatorios anfotéricos se evaluaron como agentes desemulsionantes de aceites crudos con densidades API entre 10 y 40 °API, mostrando un desempeño superior como rompedores, coalescedores y clarificantes que los del bipolímero acrílico sin funcionalizar y una formulación comercial base poliéteres.