Experimental Study of Nitrogen Foam Performance for Heavy Oil in The Process of Steam Flooding

2013 ◽  
Author(s):  
Keqin Lu ◽  
Chuan Lu ◽  
Qiang Zheng ◽  
Huiqing Liu
Keyword(s):  
Experimental Study ◽  
Heavy Oil ◽  
Steam Flooding ◽  
Nitrogen Foam

scholarly journals Numerical Simulations of Chemical-Assisted Steam Flooding in Offshore Heavy Oil Reservoirs after Water Flooding

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Wei Zheng ◽  
Tingen Fan ◽  
Xianhong Tan ◽  
Weidong Jiang ◽  
Taichao Wang ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Oil Reservoirs ◽  
Water Flooding ◽  
Bohai Bay ◽  
Liquid Ratio ◽  
Thermal Methods ◽  
Foaming Agent ◽  
Steam Flooding ◽  
Nitrogen Foam ◽  
Heavy Oil Reservoirs

Chemical-assisted steam flooding (CASF) is a promising method for heavy oils. However, few researches have investigated the CASF performance on offshore heavy oil reservoirs recovery after water flooding. In this study, a numerical simulation model was developed to simulate CASF processes for offshore heavy oil reservoirs after water flooding. Then, a comparison of CASF and various thermal methods was made to assess the feasibility of CASF in an offshore heavy reservoir of Bohai Bay, China. Finally, sensitivity analysis was performed to evaluate the effects of the gas-liquid ratio, foaming agent concentration, surfactant concentration, the size of nitrogen foam slug, the size of surfactant slug, and the number of chemical injection round on CASF performance by the developed model. The results showed that the developed numerical method can precisely simulate the CASF processes. CASF is a potential and effective method for offshore heavy oil reservoirs after water flooding. The most suitable gas-liquid ratio was around 2 : 1 under the simulation conditions. Considering the economic benefit, it is significant to optimize the CASF parameters, such as foaming agent concentration, the size of nitrogen foam slug, and the number of chemical injection round.

Nitrogen Foam Anti-Edge Water-Incursion Technology for Heavy Oil Reservoir with Edge Water

2013 ◽  
Vol 827 ◽  
pp. 66-71 ◽  
Author(s):  
Jie Xiang Wang ◽  
Teng Fei Wang ◽  
ZeXia Fan
Keyword(s):  
Heavy Oil ◽  
Field Tests ◽  
Oil Production ◽  
Oil Reservoir ◽  
Steam Flooding ◽  
Nitrogen Foam ◽  
Single Well ◽  
Heavy Oil Reservoir ◽  
Water Cut ◽  
Steam Stimulation

The steam stimulation is a main method to develop the heavy oil reservoir. However, the huff-puff wells will be water-flooded quickly if the reservoir has edge water, and the oil production level will decrease sharply. An experimental device, which can simulate edge water and steam stimulation process, was designed according to the feature of Henan heavy oil reservoir with edge water on the basis of steam flooding device, and the effect factors and application conditions of nitrogen foam anti-edge water-incursion technology were researched. The results show that the anti-edge water-incursion technology is suitable for the heavy oil reservoir with a medium energy edge water, and a better foam plugging will be got if the technology is applied at the time of serious water-flooded. The optimum injection pattern of the technology is a N2 slug first, followed by a nitrogen foam slug, and then the steam slug. Field tests were proceeded on the basis of experiment results and field experience, the operation success rate is 100%, the average drainage period reduces by 0.7d, the average cycle water cut reduces by 23%, the average cycle oil production increases by 2 times, and the average single-well oil-steam ratio increases by 0.25. So the technology can reduce water cut and increase oil production significantly, and the target of edge water inhibition is achieved.

EXPERIMENTAL STUDY OF HEAVY OIL DISPLACEMENT BY CARBON DIOXIDE FROM CARBONATE ROCKS

2019 ◽  
pp. 51-56
Author(s):  
O.A. Morozyuk ◽  
◽  
N.N. Barkovsky ◽  
S.A. Kalinin ◽  
A.V. Bondarenko ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Experimental Study ◽  
Heavy Oil ◽  
Carbonate Rocks ◽  
Oil Displacement
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