An Evaluation of Enhanced Oil Recovery Strategies for Extra Heavy Oil Reservoir after Cold Production without Sand in Orinoco, Venezuela

2018 ◽  
Author(s):  
Yu Bao ◽  
Liangchen He ◽  
Xue Lv ◽  
Yang Shen ◽  
Xingmin Li ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Oil Reservoir ◽  
Recovery Strategies ◽  
Heavy Oil Reservoir

Research Status and Prospect of Heavy Oil Recovery Technology

2021 ◽  
Vol 888 ◽  
pp. 111-117
Author(s):  
Yi Zhao ◽  
De Yin Zhao ◽  
Rong Qiang Zhong ◽  
Li Rong Yao ◽  
Ke Ke Li
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Development Trend ◽  
Thermal Recovery ◽  
Hot Water ◽  
Water Flooding ◽  
Oil Reservoir ◽  
Heavy Oil Recovery ◽  
Steam Flooding ◽  
Heavy Oil Reservoir

With the continuous exploitation of most reservoirs in China, the proportion of heavy oil reservoirs increases, and the development difficulty is greater than that of conventional reservoirs. In view of the important subject of how to improve the recovery factor of heavy oil reservoir, the thermal recovery technology (hot water flooding, steam flooding, steam assisted gravity drainage SAGD and steam huff and puff) and cold recovery technology (chemical flooding, electromagnetic wave physical flooding and microbial flooding) used in the development of heavy oil reservoir are summarized. The principle of action is analyzed, and the main problems restricting heavy oil recovery are analyzed The main technologies of heavy oil recovery are introduced from the aspects of cold recovery and hot recovery. Based on the study of a large number of literatures, and according to the development trend of heavy oil development, suggestions and prospects for the future development direction are put forward.

Development Optimization for Improving Oil Recovery of Cold Production in a Foamy Extra-Heavy Oil Reservoir

2019 ◽  
Author(s):  
Zhaopeng Yang ◽  
Xingmin Li ◽  
Heping Chen ◽  
Hariharan Ramachandran ◽  
Yang Shen ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Oil Reservoir ◽  
Heavy Oil Reservoir

Study on Enhancing Oil Recovery by Indigenous Microorganisms in a Heavy Oil Reservoir

2013 ◽  
Vol 807-809 ◽  
pp. 2624-2628
Author(s):  
Qing Feng Cui ◽  
Li Na Yi ◽  
Han Ping Dong
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Field Performance ◽  
Oil Reservoir ◽  
Oil Well ◽  
Formation Water ◽  
Indigenous Microorganisms ◽  
Heavy Oil Reservoir ◽  
Reducing Bacteria ◽  
Microbial Flooding

The feasibility of enhancing oil recovery in Xinjiang oilfield with heavy oil reservoir was studied. The results showed that main microbial populations in the reservoir were saprophytic, hydrocarbon-oxidizing, nitrate-reducing bacteria, sulfate-reducing bacteria, and fermentative. Given optimized carbon and nitrogen sources, the indigenous microorganisms generated gases, which mostly were CO2, and amount of gases could reach 1.3 times volume as nutrient solution. The effect of MEOR was evaluated by a sand pack experiment, and the oil recovery was 9.5%. The test with the injection of nutrient and air was carried out. Field performance monitoring and product ion tracking results showed: 1the indigenous microorganisms were activated with the number increased 2-3, and microbial population structure changed apparently; 2The content of CO2 and CH4 in the gas of oil well changed slightly; 3the properties formation water were changed, the content of HCO3- in formation water varied greatly, and emulsion were found. 4Although Indigenous Microbial Flooding Technology may be a potential technique for the development of oilfields, that biogas generated by microbes is not the primary mechanism of Indigenous Microbial Flooding Technology is determined.

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