CO<sub>2</sub> EOR factors in heavy oil reservoirs

SUN Huanquan; WANG Haitao; WU Guanghuan; WANG Yiping

doi:10.11781/sysydz2020061009

Volume 42 Issue 6

Nov. 2020

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SUN Huanquan, WANG Haitao, WU Guanghuan, WANG Yiping. CO2 EOR factors in heavy oil reservoirs[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2020, 42(6): 1009-1013. doi: 10.11781/sysydz2020061009

Citation:

SUN Huanquan, WANG Haitao, WU Guanghuan, WANG Yiping. CO₂ EOR factors in heavy oil reservoirs[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2020, 42(6): 1009-1013. doi: 10.11781/sysydz2020061009

SUN Huanquan, WANG Haitao, WU Guanghuan, WANG Yiping. CO2 EOR factors in heavy oil reservoirs[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2020, 42(6): 1009-1013. doi: 10.11781/sysydz2020061009

Citation:

SUN Huanquan, WANG Haitao, WU Guanghuan, WANG Yiping. CO₂ EOR factors in heavy oil reservoirs[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2020, 42(6): 1009-1013. doi: 10.11781/sysydz2020061009

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CO₂ EOR factors in heavy oil reservoirs

doi: 10.11781/sysydz2020061009

1.
SINOPEC, Beijing 100728, China
2.
Petroleum Exploration&Production Research Institute(PEPRIS), SINOPEC, Beijing 100083, China
3.
Shengli Oilfield, SINOPEC, Dongying, Shandong 257015, China

Received Date: 2020-09-03
Rev Recd Date: 2020-10-19
Publish Date: 2020-11-28

Abstract

Abstract

Different from the mechanism of improving light oil recovery by CO₂ injection, heavy oil does not mix with CO₂, so the main factors affecting its development are very different. Especially in the process of thermochemical composite oil recovery, the injected CO₂ mainly plays a role in insulating heat, reducing viscosity and increasing energy. The properties of heavy oil were determined in this study in order to systematically investigate the effects of different factors influencing CO₂ displacement. The effect of heavy oil viscosity, temperature, pressure and permeability on recovery were investigated using the orthogonal experimental method. Temperature was the most significant factor, followed by permeability, pressure and heavy oil viscosity. According to the experimental results and considering factors such as reservoir temperature and permeability, the field tests of CO₂ huff and puff in the Shengli Oilfield of SINOPEC were conducted. Production results show that increasing reservoir temperature and permeability is beneficial for CO₂ EOR and can improve oil production.
- heavy oil,
- carbon dioxide,
- orthogonal experiment,
- influencing factors,
- EOR

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References(16)

References

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CO₂ EOR factors in heavy oil reservoirs

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CO₂ EOR factors in heavy oil reservoirs