Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase Flow
The capacitance method is widely used to measure the water content of oil-water two-phase flow, whether it is the surface oil-water measurement or the stratification test of the production profile in the well. To measure the water holdup (water phase volume fraction), it is necessary to establish th...
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Editorial Office of Well Logging Technology
2024-06-01
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| Series: | Cejing jishu |
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| Online Access: | https://www.cnpcwlt.com/#/digest?ArticleID=5594 |
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| author | QU Jinghui LIU Xingbin LIU Dongmei DENG Yuheng LIU Dayong YANG Yuntong |
| author_facet | QU Jinghui LIU Xingbin LIU Dongmei DENG Yuheng LIU Dayong YANG Yuntong |
| author_sort | QU Jinghui |
| collection | DOAJ |
| description | The capacitance method is widely used to measure the water content of oil-water two-phase flow, whether it is the surface oil-water measurement or the stratification test of the production profile in the well. To measure the water holdup (water phase volume fraction), it is necessary to establish the relationship between the water holdup and the sensor capacitance, so it is necessary to establish the theoretical or empirical model of the miscible equivalent dielectric constant and the water holdup. Since the formation water produced from wells and tap water used in surface laboratory calibration have good electrical conductivity at low and medium frequencies, considering only the dielectric property without considering the electrical conductivity will have a significant impact on the accuracy of water retention measurement. Based on the effective electric field theory of dielectric polarization, the equivalent dielectric constant model of oil-water two-phase flow is established, considering water as a good conductor under the condition of low water content and fine bubble flow. According to this model, the equivalent permittivity of oil-water two-phase flow is determined only by the water holdup and the permittivity of oil phase, and has nothing to do with the permittivity of water phase and the conductivity of water phase. The correctness of the model is verified by preliminary experiments. The research is of great significance for the design and field application of the water content sensor for oil-water two-phase flow when the oil is continuous phase. |
| format | Article |
| id | doaj-art-0f161d0893b1498686276c02413b8d35 |
| institution | OA Journals |
| issn | 1004-1338 |
| language | zho |
| publishDate | 2024-06-01 |
| publisher | Editorial Office of Well Logging Technology |
| record_format | Article |
| series | Cejing jishu |
| spelling | doaj-art-0f161d0893b1498686276c02413b8d352025-08-20T02:33:23ZzhoEditorial Office of Well Logging TechnologyCejing jishu1004-13382024-06-0148330831610.16489/j.issn.1004-1338.2024.03.0041004-1338(2024)03-0308-09Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase FlowQU Jinghui0LIU Xingbin1LIU Dongmei2DENG Yuheng3LIU Dayong4YANG Yuntong5School of Physics and Electronic Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaSchool of Physics and Electronic Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaSchool of Physics and Electronic Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaInternational Business Department, China International Engineering Consulting Corporation Limited, Beijing 100048, ChinaNorth China Branch, China National Logging Corporation, Cangzhou, Hebei 016000, ChinaSchool of Physics and Electronic Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaThe capacitance method is widely used to measure the water content of oil-water two-phase flow, whether it is the surface oil-water measurement or the stratification test of the production profile in the well. To measure the water holdup (water phase volume fraction), it is necessary to establish the relationship between the water holdup and the sensor capacitance, so it is necessary to establish the theoretical or empirical model of the miscible equivalent dielectric constant and the water holdup. Since the formation water produced from wells and tap water used in surface laboratory calibration have good electrical conductivity at low and medium frequencies, considering only the dielectric property without considering the electrical conductivity will have a significant impact on the accuracy of water retention measurement. Based on the effective electric field theory of dielectric polarization, the equivalent dielectric constant model of oil-water two-phase flow is established, considering water as a good conductor under the condition of low water content and fine bubble flow. According to this model, the equivalent permittivity of oil-water two-phase flow is determined only by the water holdup and the permittivity of oil phase, and has nothing to do with the permittivity of water phase and the conductivity of water phase. The correctness of the model is verified by preliminary experiments. The research is of great significance for the design and field application of the water content sensor for oil-water two-phase flow when the oil is continuous phase.https://www.cnpcwlt.com/#/digest?ArticleID=5594oil-water two-phase flowcapacitance water holdup meterwater holdupeffective electric fieldequivalent dielectric permittivity |
| spellingShingle | QU Jinghui LIU Xingbin LIU Dongmei DENG Yuheng LIU Dayong YANG Yuntong Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase Flow Cejing jishu oil-water two-phase flow capacitance water holdup meter water holdup effective electric field equivalent dielectric permittivity |
| title | Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase Flow |
| title_full | Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase Flow |
| title_fullStr | Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase Flow |
| title_full_unstemmed | Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase Flow |
| title_short | Equivalent Dielectric Permittivity Model of Low Water Cut Oil-Water Two-Phase Flow |
| title_sort | equivalent dielectric permittivity model of low water cut oil water two phase flow |
| topic | oil-water two-phase flow capacitance water holdup meter water holdup effective electric field equivalent dielectric permittivity |
| url | https://www.cnpcwlt.com/#/digest?ArticleID=5594 |
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