Application of CO2-Triggered Switchable Surfactants to Form Emulsion with Xinjiang Heavy Oil |
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| Authors: | Hongsheng Lu Xueqian Guan Shanshan Dai Zhiyu Huang |
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| Institution: | 1. School of Chemistry and Chemical Engineering, Southwest Petroleum University , Chengdu , P. R. China;2. Engineering Research Center of Oilfield Chemistry, Ministry of Education , Chengdu , P. R. China;3. School of Chemistry and Chemical Engineering, Southwest Petroleum University , Chengdu , P. R. China |
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| Abstract: | Owing to the high acid number of Xinjiang heavy oil and incomplete demulsification after pipelining, this article discusses the application of CO2-triggered switchable surfactants to the emulsified transport of several Xinjiang heavy oils in the pipeline. Results show that CO2-triggered switchable surfactants promote the formation and stabilization of oil-in-water (O/W) emulsion in the absence of CO2 as a base. The property parameters of heavy oils fundamentally influence the indigenous emulsifying agents. The emulsion is stable when the heavy oil has a high acid number and low asphaltene content, which is also affected by some physical factors. |
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| Keywords: | CO2-triggered switchable surfactant emulsion stability Xinjiang heavy oil |
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