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Investigación sobre el potencial mejorado de recuperación de petróleo en los depósitos de alto corte de agua
Meiming He1,2, Wan-Fen Pu3,4,5, Zhiwu He1,2
1National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Changqing Oilfield Company, PetroChina, Xi'an 710000, China.
Langmuir : the ACS journal of surfaces and colloids
|February 10, 2026
Resumen
Los investigadores desarrollaron un nuevo sistema emulsionante (TBHSD) para impulsar la recuperación de petróleo en los depósitos de corte de agua alta. Este método mejorado de recuperación de petróleo aumentó significativamente la producción de petróleo mediante la movilización de petróleo crudo de pequeños poros.
Área de la Ciencia:
- Ingeniería del Petróleo Ingeniería del Petróleo.
- Recuperación Mejorada del Petróleo.
- Colloide y la química de las superficies.
Sus antecedentes:
- El embalse Y se enfrenta a una baja recuperación de petróleo debido al alto corte de agua (80,1%) y a una mala emulsificación natural.
- Las inundaciones de agua convencionales son insuficientes para maximizar la extracción de hidrocarburos en campos maduros.
Objetivo del estudio:
- Diseñar y evaluar un nuevo sistema emulsionante para la recuperación mejorada de petróleo (EOR) en depósitos de baja emulsificación.
- Investigar las propiedades de alteración de la interfaz y la wettability del sistema desarrollado.
- Para evaluar el rendimiento de recuperación de petróleo del sistema a través de experimentos de inundación del núcleo.
Principales métodos:
- Síntesis del emulsionante nano-SiO2 modificado con ácido benzoico (BHSD) y su combinación con Tween 20 para formar el sistema TBHSD.
- Evaluación sistemática de la estabilidad de la dispersión, el rendimiento de emulsificación, la reducción de la tensión interfacial y la resistencia de la película interfacial.
- Experimentos de inundación a escala de poros y núcleo para demostrar la movilización del petróleo y la eficiencia de la recuperación.
Principales resultados:
- El sistema TBHSD efectivamente formó emulsiones de agua en aceite de alta fase interna (75-85%).
- Se observó una reducción significativa de la tensión interfacial (hasta 0,69 mN/m) y una mayor resistencia de la película interfacial (20,63 mN/m).
- Las inundaciones del núcleo demostraron una recuperación adicional de petróleo del 27,8% mediante la movilización de petróleo de pequeños poros.
Conclusiones:
- El sistema TBHSD ofrece una estrategia prometedora para mejorar la recuperación de petróleo en reservas difíciles.
- Los mecanismos sinérgicos, incluida la mejora de la viscosidad y el control de la movilidad adaptativa, contribuyen a mejorar la eficiencia del desplazamiento microscópico.
- El sistema emulsionante desarrollado altera efectivamente la humedabilidad de la roca, ayudando aún más a la movilización del petróleo.
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