Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube
CO2 flooding for oil recovery is a dynamic process that requires further investigation of oil-gas interface change characteristics, interfacial mass transfer processes, and oil-gas composition variation during both immiscible and miscible displacement. Understanding these factors is crucial for bet...
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Instituto Colombiano del petróleo y energías de la Transición - ICPET
2024-06-01
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| Series: | CT&F Ciencia, Tecnología & Futuro |
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| Online Access: | https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/758 |
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| author | Xing Zhang Dongchen Ma Ruiming Zhao Xiaoyu Zhang Jiajia Feng Meng Feng |
| author_facet | Xing Zhang Dongchen Ma Ruiming Zhao Xiaoyu Zhang Jiajia Feng Meng Feng |
| author_sort | Xing Zhang |
| collection | DOAJ |
| description | CO2 flooding for oil recovery is a dynamic process that requires further investigation of oil-gas interface change characteristics, interfacial mass transfer processes, and oil-gas composition variation during both immiscible and miscible displacement. Understanding these factors is crucial for better comprehending their impact on CO2-enhanced oil recovery (EOR). This research used a jointly developed CO2 miscible visual flooding experimental apparatus to study the horizontal dynamic characteristics of CO2 and crude oil under different pressures and flow rates in visual slim tube. At 10 MPa, the stratification results of CO2 and crude oil indicate that the experiment is immiscible flooding. The contact angle (7.9°) between the two phases of CO2 and crude oil at the flow rate of 15 cm/min is larger than that (5.2°) at 1.5 cm/min, and the grey scale of CO2 increases at 100 cm/min. The quantity, individual content, and shape of the light and medium hydrocarbon components condensed on the inner wall of the tube vary with different flow rates. At 15 MPa, the appearance of the CO2 and crude oil transition interval proves that the experiment is miscible flooding. At different flow rates, the inclination angle and distribution of black stripes vary. The whole transition interval is divided into 6 intervals, and the transition interval lengthens with increasing fluid velocity. The experiments visually demonstrate the occurrence of the miscible phase, and identify experimental pressure and fluid flow rate as key factors influencing the miscibility of CO2 and crude oil. |
| format | Article |
| id | doaj-art-cdc99ac6b031443ca9a3c9980e46c561 |
| institution | Kabale University |
| issn | 0122-5383 2382-4581 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Instituto Colombiano del petróleo y energías de la Transición - ICPET |
| record_format | Article |
| series | CT&F Ciencia, Tecnología & Futuro |
| spelling | doaj-art-cdc99ac6b031443ca9a3c9980e46c5612025-01-13T20:39:42ZengInstituto Colombiano del petróleo y energías de la Transición - ICPETCT&F Ciencia, Tecnología & Futuro0122-53832382-45812024-06-01141512https://doi.org/10.29047/01225383.758Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tubeXing Zhang0https://orcid.org/0009-0001-4897-5996Dongchen Ma1https://orcid.org/0009-0005-4537-3104Ruiming Zhao2https://orcid.org/0009-0002-5272-6340Xiaoyu Zhang3https://orcid.org/0009-0007-5309-8645Jiajia Feng4https://orcid.org/0009-0000-7874-864XMeng Feng5https://orcid.org/0009-0006-5208-0788The Karamay Branch of National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing) at Karamay, 834000 Karamay, ChinaExperimental Detection Technology Center, Northwest Oilfield Company, SINOPEC, Urumqi, ChinaExperimental Detection Technology Center, Northwest Oilfield Company, SINOPEC, Urumqi, ChinaExperimental Detection Technology Center, Northwest Oilfield Company, SINOPEC, Urumqi, ChinaOil Testing Company, PetroChina West Drilling Engineering Co., Ltd., Karamay, ChinaOil Testing Company, PetroChina West Drilling Engineering Co., Ltd., Karamay, ChinaCO2 flooding for oil recovery is a dynamic process that requires further investigation of oil-gas interface change characteristics, interfacial mass transfer processes, and oil-gas composition variation during both immiscible and miscible displacement. Understanding these factors is crucial for better comprehending their impact on CO2-enhanced oil recovery (EOR). This research used a jointly developed CO2 miscible visual flooding experimental apparatus to study the horizontal dynamic characteristics of CO2 and crude oil under different pressures and flow rates in visual slim tube. At 10 MPa, the stratification results of CO2 and crude oil indicate that the experiment is immiscible flooding. The contact angle (7.9°) between the two phases of CO2 and crude oil at the flow rate of 15 cm/min is larger than that (5.2°) at 1.5 cm/min, and the grey scale of CO2 increases at 100 cm/min. The quantity, individual content, and shape of the light and medium hydrocarbon components condensed on the inner wall of the tube vary with different flow rates. At 15 MPa, the appearance of the CO2 and crude oil transition interval proves that the experiment is miscible flooding. At different flow rates, the inclination angle and distribution of black stripes vary. The whole transition interval is divided into 6 intervals, and the transition interval lengthens with increasing fluid velocity. The experiments visually demonstrate the occurrence of the miscible phase, and identify experimental pressure and fluid flow rate as key factors influencing the miscibility of CO2 and crude oil.https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/758co2 and crude oil; immiscible flooding; miscible flooding; dynamic characteristics; visual slim tube |
| spellingShingle | Xing Zhang Dongchen Ma Ruiming Zhao Xiaoyu Zhang Jiajia Feng Meng Feng Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube CT&F Ciencia, Tecnología & Futuro co2 and crude oil; immiscible flooding; miscible flooding; dynamic characteristics; visual slim tube |
| title | Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube |
| title_full | Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube |
| title_fullStr | Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube |
| title_full_unstemmed | Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube |
| title_short | Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube |
| title_sort | experimental study on immiscible and miscible dynamic characteristics of co2 and crude oil in visual slim tube |
| topic | co2 and crude oil; immiscible flooding; miscible flooding; dynamic characteristics; visual slim tube |
| url | https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/758 |
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