Paper Title:

Experimental Investigation of Enhanced Oil Recovery by Thermal Foam Flooding

Periodical Advanced Materials Research (Volumes 236 - 238)
Main Theme Application of Chemical Engineering
Edited by Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages 814-819
DOI 10.4028/www.scientific.net/AMR.236-238.814
Citation Hui Qing Liu et al., 2011, Advanced Materials Research, 236-238, 814
Online since May, 2011
Authors Hui Qing Liu, Jing Wang, Peng Cheng Hou, Bing Ke Wang
Keywords Enhanced Oil Recovery (EOR), Experiment Research, Plugging Property, Steam and Foam Combination Flooding, Steam Flooding
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Foam has been widely used in petroleum industry. It could enhance oil recovery by the means of improving mobility ratio, selective plugging and lowering the interfacial tension(IFT) of oil and water. The influences of concentration, temperature, gas-liquid ratio, permeability and oil saturation on the plugging property of 3 foaming agents were studied experimentally. The foaming agent concentration and the ratio of steam to nitrogen for thermal foam flooding were optimized. Displacement experiments were performed to investigate the EOR effect of 2# foaming agent. It was shown that the resistance factor increased with the increase of the concentration, gas-liquid ratio and permeability and the increase velocity slowed down in the later period of experiments. The optimal concentration was 0.5wt% and the optimum gas-liquid ratio was 1:1. The resistance factor reduced with increasing oil saturation. The plugging ability lost when the oil saturation was greater than 0.2. The resistance factors of 1# and 2# foaming agents decreased with increasing temperature but 3# increased. The best concentration was 0.6wt% and the ratio of steam to nitrogen was 3:2 for steam and nitrogen foam flooding. In the process of thermal foam flooding, oil recovery increased by 20.82%, and the sweep efficiency and displacement efficiency was 13% and 24.6% , separately.

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