Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide

The mass transfer between heavy oil and liquid carbon dioxide and the changes of the heavy phase (mixture of heavy oil and CO2) and light phase (pure CO2) in the mixture were tested in lab with heavy oil samples from Russia. The experimental results showed that the heavy oil hardly expanded when the...

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Main Authors: A A LOBANOV, K A SHHEKOLDIN, I A STRUCHKOV, M A ZVONKOV, M V HLAN, E J PUSTOVA, V A KOVALENKO, A B ZOLOTUKHIN
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2018-10-01
Series:Petroleum Exploration and Development
Online Access:http://www.sciencedirect.com/science/article/pii/S1876380418300958
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spelling doaj-de6dd2f31932454bb8fe15ecd7365ba22021-02-02T04:55:12ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042018-10-01455918926Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxideA A LOBANOV0K A SHHEKOLDIN1I A STRUCHKOV2M A ZVONKOV3M V HLAN4E J PUSTOVA5V A KOVALENKO6A B ZOLOTUKHIN7Northern (Arctic) Federal University, Arkhangelsk, Russian FederationJSC RITEK, Samara, Russian FederationSaint-Petersburg Mining University, Saint Petersburg, Russian Federation; Corresponding authorNorthern (Arctic) Federal University, Arkhangelsk, Russian FederationNorthern (Arctic) Federal University, Arkhangelsk, Russian FederationNorthern (Arctic) Federal University, Arkhangelsk, Russian FederationNorthern (Arctic) Federal University, Arkhangelsk, Russian FederationNorthern (Arctic) Federal University, Arkhangelsk, Russian FederationThe mass transfer between heavy oil and liquid carbon dioxide and the changes of the heavy phase (mixture of heavy oil and CO2) and light phase (pure CO2) in the mixture were tested in lab with heavy oil samples from Russia. The experimental results showed that the heavy oil hardly expanded when the concentration of carbon dioxide in the mixture was 10%. When the concentration of carbon dioxide was higher than 26%, the volume of the heavy phase decreased, and the viscosity of the heavy phase increased exponentially as the light components extracted from the heavy oil exceeded the carbon dioxide saturated in the heavy oil. When the concentration of carbon dioxide in the mixture was 26%, the effect of viscosity reducing to the heavy phase was the strongest. The density of the light and heavy phases, volume factor, and solubility of gas and flash viscosity of heavy phase all increased with the rise of carbon dioxide concentration in the mixture. The best concentration of carbon dioxide in the mixture was 26%, when the heavy oil expanded the most and the viscosity of the heavy phase was the lowest. When the concentration of carbon dioxide in the mixture was between 10% and 26%, the volume of the light phase was the smallest and the oil displacement effect was the best. Key words: enhanced oil recovery, liquid CO2, heavy oil, swelling test, extract test, phase behaviorhttp://www.sciencedirect.com/science/article/pii/S1876380418300958
collection DOAJ
language English
format Article
sources DOAJ
author A A LOBANOV
K A SHHEKOLDIN
I A STRUCHKOV
M A ZVONKOV
M V HLAN
E J PUSTOVA
V A KOVALENKO
A B ZOLOTUKHIN
spellingShingle A A LOBANOV
K A SHHEKOLDIN
I A STRUCHKOV
M A ZVONKOV
M V HLAN
E J PUSTOVA
V A KOVALENKO
A B ZOLOTUKHIN
Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide
Petroleum Exploration and Development
author_facet A A LOBANOV
K A SHHEKOLDIN
I A STRUCHKOV
M A ZVONKOV
M V HLAN
E J PUSTOVA
V A KOVALENKO
A B ZOLOTUKHIN
author_sort A A LOBANOV
title Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide
title_short Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide
title_full Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide
title_fullStr Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide
title_full_unstemmed Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide
title_sort swelling/extraction test of russian reservoir heavy oil by liquid carbon dioxide
publisher KeAi Communications Co., Ltd.
series Petroleum Exploration and Development
issn 1876-3804
publishDate 2018-10-01
description The mass transfer between heavy oil and liquid carbon dioxide and the changes of the heavy phase (mixture of heavy oil and CO2) and light phase (pure CO2) in the mixture were tested in lab with heavy oil samples from Russia. The experimental results showed that the heavy oil hardly expanded when the concentration of carbon dioxide in the mixture was 10%. When the concentration of carbon dioxide was higher than 26%, the volume of the heavy phase decreased, and the viscosity of the heavy phase increased exponentially as the light components extracted from the heavy oil exceeded the carbon dioxide saturated in the heavy oil. When the concentration of carbon dioxide in the mixture was 26%, the effect of viscosity reducing to the heavy phase was the strongest. The density of the light and heavy phases, volume factor, and solubility of gas and flash viscosity of heavy phase all increased with the rise of carbon dioxide concentration in the mixture. The best concentration of carbon dioxide in the mixture was 26%, when the heavy oil expanded the most and the viscosity of the heavy phase was the lowest. When the concentration of carbon dioxide in the mixture was between 10% and 26%, the volume of the light phase was the smallest and the oil displacement effect was the best. Key words: enhanced oil recovery, liquid CO2, heavy oil, swelling test, extract test, phase behavior
url http://www.sciencedirect.com/science/article/pii/S1876380418300958
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