Study on the kinetics of formation process of emulsion of heavy oil and its functional group components
Abstract Enhanced oil recovery (EOR) by in situ formation of oil-in-water emulsion in heavy oil cold production technology has received growing interest from the petroleum industry. We present an experimental study of emulsification of model oils prepared by heavy oil and its functional group compos...
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Nature Portfolio
2024-04-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-59637-9 |
| _version_ | 1797199561534472192 |
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| author | Jinhe Liu Chengdi Sun Zengmin Lun Yao Li Xinyu Tang Qingxuan Zhang Pujiang Yang |
| author_facet | Jinhe Liu Chengdi Sun Zengmin Lun Yao Li Xinyu Tang Qingxuan Zhang Pujiang Yang |
| author_sort | Jinhe Liu |
| collection | DOAJ |
| description | Abstract Enhanced oil recovery (EOR) by in situ formation of oil-in-water emulsion in heavy oil cold production technology has received growing interest from the petroleum industry. We present an experimental study of emulsification of model oils prepared by heavy oil and its functional group compositions dissolved into toluene brought into contact with a surfactant solution. The effects of functional group composition, emulsifier concentration, temperature, pH and stirring speed on the emulsification rate of heavy oil was investigated. A second-order kinetic model characterizing the temporal variation of conductivity during the emulsification has been established. The results show that acidic and amphoteric fractions exhibit higher interfacial activity, larger emulsification rate constant and faster emulsification rate. With the increase of emulsifier concentration, the emulsification rate constant increase to the maximum value at a concentration of 0.05 mol/L before decreasing. Temperature increase benefits the emulsification rate and the activation energy of the emulsification process is 40.28 kJ/mol. Higher pH and stirring speed indicate faster emulsification rate. The heterogeneity of emulsions limits the accuracy of dynamic characterization of the emulsification process and the determination method of emulsification rate has always been controversial. The conductivity method we proposed can effectively evaluates the emulsification kinetics. This paper provides theoretical guidance for an in-depth understanding of the mechanism and application of cold recovery technology for heavy oil. |
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| format | Article |
| id | doaj.art-ab75385f9e1d454daf5ec892bd833514 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T07:17:43Z |
| publishDate | 2024-04-01 |
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| spelling | doaj.art-ab75385f9e1d454daf5ec892bd8335142024-04-21T11:14:24ZengNature PortfolioScientific Reports2045-23222024-04-0114111610.1038/s41598-024-59637-9Study on the kinetics of formation process of emulsion of heavy oil and its functional group componentsJinhe Liu0Chengdi Sun1Zengmin Lun2Yao Li3Xinyu Tang4Qingxuan Zhang5Pujiang Yang6College of Chemistry and Chemical Engineering, China University of PetroleumPetroleum Engineering Technology Research Institute, Sinopec Shengli Oilfield CompanyExperimental Research Center, Sinopec Petroleum Exploration and Production Research InstituteCollege of Chemistry and Chemical Engineering, China University of PetroleumCollege of Chemistry and Chemical Engineering, China University of PetroleumCollege of Chemistry and Chemical Engineering, China University of PetroleumCollege of Chemistry and Chemical Engineering, China University of PetroleumAbstract Enhanced oil recovery (EOR) by in situ formation of oil-in-water emulsion in heavy oil cold production technology has received growing interest from the petroleum industry. We present an experimental study of emulsification of model oils prepared by heavy oil and its functional group compositions dissolved into toluene brought into contact with a surfactant solution. The effects of functional group composition, emulsifier concentration, temperature, pH and stirring speed on the emulsification rate of heavy oil was investigated. A second-order kinetic model characterizing the temporal variation of conductivity during the emulsification has been established. The results show that acidic and amphoteric fractions exhibit higher interfacial activity, larger emulsification rate constant and faster emulsification rate. With the increase of emulsifier concentration, the emulsification rate constant increase to the maximum value at a concentration of 0.05 mol/L before decreasing. Temperature increase benefits the emulsification rate and the activation energy of the emulsification process is 40.28 kJ/mol. Higher pH and stirring speed indicate faster emulsification rate. The heterogeneity of emulsions limits the accuracy of dynamic characterization of the emulsification process and the determination method of emulsification rate has always been controversial. The conductivity method we proposed can effectively evaluates the emulsification kinetics. This paper provides theoretical guidance for an in-depth understanding of the mechanism and application of cold recovery technology for heavy oil.https://doi.org/10.1038/s41598-024-59637-9ConductivityHeavy oil emulsionThe law of dynamicEmulsification rateHeavy oil active component |
| spellingShingle | Jinhe Liu Chengdi Sun Zengmin Lun Yao Li Xinyu Tang Qingxuan Zhang Pujiang Yang Study on the kinetics of formation process of emulsion of heavy oil and its functional group components Scientific Reports Conductivity Heavy oil emulsion The law of dynamic Emulsification rate Heavy oil active component |
| title | Study on the kinetics of formation process of emulsion of heavy oil and its functional group components |
| title_full | Study on the kinetics of formation process of emulsion of heavy oil and its functional group components |
| title_fullStr | Study on the kinetics of formation process of emulsion of heavy oil and its functional group components |
| title_full_unstemmed | Study on the kinetics of formation process of emulsion of heavy oil and its functional group components |
| title_short | Study on the kinetics of formation process of emulsion of heavy oil and its functional group components |
| title_sort | study on the kinetics of formation process of emulsion of heavy oil and its functional group components |
| topic | Conductivity Heavy oil emulsion The law of dynamic Emulsification rate Heavy oil active component |
| url | https://doi.org/10.1038/s41598-024-59637-9 |
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