Sensitive Parameter Predicting Steady-State Pressure Difference of Partially Crosslinked Polyacrylamide Suspension in Core Flow Experiments |
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Authors: | Zuming Jiang Zhiqing Su Li Li Kai Zhang Yong Zhu Jiangbo Li |
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Institution: | State Key Laboratory of Polymer Materials Engineering of China, College of Polymer Science and Engineering , Sichuan University , Chengdu , China |
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Abstract: | Using artificial cores, six different partially crosslinked polyacrylamide (PCPAM) suspensions were used for sandpacked core flow experiments; the results indicated that the migration of the PCPAM particles through porous media was a process of plugging and flooding at the same time. A theoretical model was proposed and the sensitive parameter, G′, was determined by rheological oscillation measurements with a 200 μm plate gap. In addition, the validity of the proposed theoretical model was verified by the results of the core flow experiments and a fitting equation of ΔP 1 with G′ was obtained which can be used for quantifying the steady-state pressure of PCPAM suspensions flowing through porous media in the core flow experiments. |
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Keywords: | core flow oil displacement agent partially crosslinked polyacrylamide |
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