Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs
A field test in the Xinjiang oilfield in China shows that the viscosity of heavy oil has a certain influence on the combustion dynamics and injection-production performance of fire flooding. The experiment in this study uses a one-dimensional combustion tube to study the temperature, gas composition...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/8151777 |
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| author | Bingyan Liu Jinzhong Liang Fang Zhao Tong Liu Zongyao Qi Fengchao Liu Pengcheng Liu |
| author_facet | Bingyan Liu Jinzhong Liang Fang Zhao Tong Liu Zongyao Qi Fengchao Liu Pengcheng Liu |
| author_sort | Bingyan Liu |
| collection | DOAJ |
| description | A field test in the Xinjiang oilfield in China shows that the viscosity of heavy oil has a certain influence on the combustion dynamics and injection-production performance of fire flooding. The experiment in this study uses a one-dimensional combustion tube to study the temperature, gas composition, and air injection pressure and the production performance of the fire flooding of heavy oil with different viscosities. The results show that the oil viscosities of 1180–22500 mPa·s can achieve stable combustion, and the O2 content of the gas produced during the stable combustion stage is <0.5%. The higher the viscosity of the heavy oil, the higher the temperature in the burned zone and the smaller the range of the temperature increase in the unburned zone. The air injection pressure will increase rapidly until a stable seepage channel is formed, and then, it will drop to a level close to the formation pressure. High-viscosity heavy oil requires a higher air injection pressure and will remain in the high-pressure stage for a longer period of time. Low-viscosity heavy oil has a low water cut in the early stage of fire flooding, a large oil production rate, and a low and stable air–oil ratio. The water cut of high-viscosity heavy oil increases rapidly in the early stage of fire flooding and then decreases gradually, so a good air–oil ratio can only be obtained in the middle and late stages of fire flooding. Thus, fire flooding may be more suitable for application in common heavy oil and some extra heavy oil reservoirs with lower viscosities. |
| format | Article |
| id | doaj-art-d0e71f9dcf0349c28044f1fa140e161d |
| institution | DOAJ |
| issn | 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-d0e71f9dcf0349c28044f1fa140e161d2025-08-20T03:19:37ZengWileyGeofluids1468-81232021-01-01202110.1155/2021/8151777Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil ReservoirsBingyan Liu0Jinzhong Liang1Fang Zhao2Tong Liu3Zongyao Qi4Fengchao Liu5Pengcheng Liu6Beijing Techvista Scientific Co.Beijing Techvista Scientific Co.State Key Laboratory of Enhanced Oil RecoveryState Key Laboratory of Enhanced Oil RecoveryState Key Laboratory of Enhanced Oil RecoveryBeijing Techvista Scientific Co.School of Energy ResourcesA field test in the Xinjiang oilfield in China shows that the viscosity of heavy oil has a certain influence on the combustion dynamics and injection-production performance of fire flooding. The experiment in this study uses a one-dimensional combustion tube to study the temperature, gas composition, and air injection pressure and the production performance of the fire flooding of heavy oil with different viscosities. The results show that the oil viscosities of 1180–22500 mPa·s can achieve stable combustion, and the O2 content of the gas produced during the stable combustion stage is <0.5%. The higher the viscosity of the heavy oil, the higher the temperature in the burned zone and the smaller the range of the temperature increase in the unburned zone. The air injection pressure will increase rapidly until a stable seepage channel is formed, and then, it will drop to a level close to the formation pressure. High-viscosity heavy oil requires a higher air injection pressure and will remain in the high-pressure stage for a longer period of time. Low-viscosity heavy oil has a low water cut in the early stage of fire flooding, a large oil production rate, and a low and stable air–oil ratio. The water cut of high-viscosity heavy oil increases rapidly in the early stage of fire flooding and then decreases gradually, so a good air–oil ratio can only be obtained in the middle and late stages of fire flooding. Thus, fire flooding may be more suitable for application in common heavy oil and some extra heavy oil reservoirs with lower viscosities.http://dx.doi.org/10.1155/2021/8151777 |
| spellingShingle | Bingyan Liu Jinzhong Liang Fang Zhao Tong Liu Zongyao Qi Fengchao Liu Pengcheng Liu Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs Geofluids |
| title | Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs |
| title_full | Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs |
| title_fullStr | Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs |
| title_full_unstemmed | Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs |
| title_short | Study of Displacement Characteristics of Fire Flooding in Different Viscosity Heavy Oil Reservoirs |
| title_sort | study of displacement characteristics of fire flooding in different viscosity heavy oil reservoirs |
| url | http://dx.doi.org/10.1155/2021/8151777 |
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