Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube

Xing Zhang; Dongchen Ma; Ruiming Zhao; Xiaoyu Zhang; Jiajia Feng; Meng Feng; Jin Zhang

doi:10.29047/01225383.758

Xing Zhang The Karamay Branch of National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing) at Karamay, China https://orcid.org/0009-0001-4897-5996
Dongchen Ma Northwest Oilfield Company, SINOPEC, Xinjiang Urumqi, China https://orcid.org/0009-0005-4537-3104
Ruiming Zhao Northwest Oilfield Company, SINOPEC, Xinjiang Urumqi, China https://orcid.org/0009-0002-5272-6340
Xiaoyu Zhang Northwest Oilfield Company, SINOPEC, Xinjiang Urumqi, China https://orcid.org/0009-0007-5309-8645
Jiajia Feng Oil Testing Company, PetroChina West Drilling Engineering Co., Ltd. Karamay, China https://orcid.org/0009-0000-7874-864X
Meng Feng Oil Testing Company, PetroChina West Drilling Engineering Co., Ltd., Karamay, China https://orcid.org/0009-0006-5208-0788
Jin Zhang The Karamay Branch of National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing) at Karamay, China https://orcid.org/0009-0005-8178-9721

DOI: https://doi.org/10.29047/01225383.758

Palabras clave: CO2 y Petróleo Crudo; Inundaciones inmiscibles; Inundaciones miscibles; Características Dinámicas; Tubo delgado visual

Resumen Referencias bibliográficas Cómo citar Descargas

Resumen

La inundación de CO₂ para la recuperación de petróleo es un proceso dinámico que requiere más investigación sobre las características de cambio de la interfaz petróleo-gas, los procesos de transferencia de masa interfacial y la variación de la composición petróleo-gas durante el desplazamiento tanto inmiscible como miscible. Comprender estos factores es crucial para comprender mejor su impacto en la recuperación de petróleo mejorada con CO₂ (EOR). Esta investigación adopta un aparato experimental de inundación visual miscible con CO₂ desarrollado conjuntamente para estudiar las características dinámicas horizontales del CO₂ y el petróleo crudo bajo diferentes presiones y caudales en un tubo visual delgado. A 10 MPa, los resultados de la estratificación del CO₂ y del petróleo crudo indican que el experimento es una inundación inmiscible. El ángulo de contacto (7,9°) entre las dos fases de CO₂ y el petróleo crudo a un caudal de 15 cm/min es mayor que el (5,2°) a 1,5 cm/min, y la escala de grises del CO₂ aumenta a 100 cm/min. La cantidad, el contenido individual y la forma de los componentes de hidrocarburos ligeros y medios condensados en la pared interior del tubo varían con diferentes caudales. A 15 MPa, la aparición del intervalo de transición de CO₂ y petróleo crudo demuestra que el experimento es una inundación miscible. A diferentes caudales, el ángulo de inclinación y la distribución de las franjas negras son diferentes. Todo el intervalo de transición se divide en 6 intervalos y el intervalo de transición se alarga al aumentar la velocidad del fluido. Los experimentos demuestran visualmente la aparición de la fase miscible e identifican la presión experimental y el caudal de fluido como factores clave que influyen en la miscibilidad del CO₂ y el petróleo crudo.

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Cómo citar

Zhang, X., Ma, D., Zhao, R., Zhang, X., Feng, J., Feng, M., & Zhang, J. (2024). Estudio experimental sobre las características dinámicas inmiscibles y miscibles del CO2 y el petróleo crudo en un tubo visual delgado. CT&F - Ciencia, Tecnología Y Futuro, 14(1), 5–12. https://doi.org/10.29047/01225383.758