A novel model and sensitivity analysis for viscoelastic polymer flooding in offshore oilfield |
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| Affiliation: | 1. Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran;2. Chemistry Department, Semnan University, Semnan, Iran;3. Chemistry Department, University of Erciyes, 38039 Kayseri, Turkey;4. Department of Chemistry, Semnan University, Semnan 35195-363, Iran;1. Department of Physics, Faculty of Basic Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran;2. Department of Physics, College of Sciences, Yasouj University, P.O. Box 75914-353, Yasouj, Iran;1. Department of Chemistry, College of Science, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea;2. Korean Institute of Ceramic Engineering and Technology (KICET), Geumcheon-gu, Seoul 153-801, Republic of Korea;1. China University of Petroleum, Beijing 102249, China;2. CNPC Consulting Center, Beijing, 100724, China;3. PetroChina Exploration & Development Research Institute, Beijing 100083, China;1. School of Energy Resources, China University of Geosciences, 29# Xueyuan Road, Haidian District, 100083 Beijing, China;2. Department of Geological Sciences and Engineering, Missouri University of Science and Technology, 1400 N. Bishop Avenue, Rolla, 65409 Missouri, United States;3. Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, 29# Xueyuan Road, Haidian District, 100083 Beijing, China |
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| Abstract: | Polymer flooding has been widely used in petroleum industry. With the development of theory and technology, some problems in the existing models of polymer flooding appear during simulation. Based on the characteristics of polymer and offshore oilfield such as viscoelasticity, degradation effect and strong salt-sensitive effect, a novel model of viscoelastic polymer flooding is built, and the validation is verified. After comparing the distributions of effective viscosity and residual oil of taking account of elasticity and taking no account of elasticity, it is used to investigate the effects of injection rate, polymer molecular weight, salinity, degradation rate and well space. |
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| Keywords: | Mathematical model Non-Newtonian fluid Numerical simulation Polymer flooding Viscoelasticity |
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