caa a22 4500 606226508 CHVBK 20210128101153.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10553-015-0589-6 doi (NATIONALLICENCE)springer-10.1007/s10553-015-0589-6 Factors Influencing Micro Sweep Efficiency When Flooding a Formation with Viscoelastic Polymer Solutions [Elektronische Daten] [Yikun Liu, Huiying Zhong, Xiaojuan Peng, Changliang Zhao] A mathematical model is proposed for polymer solution flow in dead-end pores, which was studied using micro-seepage of polymer solutions as an example. The mathematical model, including a continuity equation, a momentum conservation equation, and an equation of state, was solved by the finite difference method. The stream function and velocity contours were determined. The micro sweep efficiency when flooding the formation was calculated based on the velocity contour. The influence of elasticity, flow velocity, and viscosity of the polymer solution on the micro sweep efficiency was evaluated. It is demonstrated that the viscosity and the injection rate have a lesser effect on micro sweep efficiency than the elasticity of the polymer solution. Springer Science+Business Media New York, 2015 viscoelastic polymer solution nationallicence flooding sweep efficiency nationallicence velocity contour nationallicence polymer flooding nationallicence Liu Yikun Key Laboratory of Enhanced Oil & Gas Recovery, Ministry of Education, Northeast Petroleum University, Daqing, China aut Zhong Huiying Key Laboratory of Enhanced Oil & Gas Recovery, Ministry of Education, Northeast Petroleum University, Daqing, China aut Peng Xiaojuan Oil Recovery Plant No. 1, Daqing Oilfield Company Limited, Daqing, China aut Zhao Changliang Offshore Petroleum Development Company, Liaohe Oilfield Company, Panjin, China aut Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 51/2(2015-05-01), 160-167 0009-3092 51:2<160 2015 51 10553 https://doi.org/10.1007/s10553-015-0589-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10553-015-0589-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Yikun Key Laboratory of Enhanced Oil & Gas Recovery, Ministry of Education, Northeast Petroleum University, Daqing, China aut NATIONALLICENCE 700 1- Zhong Huiying Key Laboratory of Enhanced Oil & Gas Recovery, Ministry of Education, Northeast Petroleum University, Daqing, China aut NATIONALLICENCE 700 1- Peng Xiaojuan Oil Recovery Plant No. 1, Daqing Oilfield Company Limited, Daqing, China aut NATIONALLICENCE 700 1- Zhao Changliang Offshore Petroleum Development Company, Liaohe Oilfield Company, Panjin, China aut NATIONALLICENCE 773 0- Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 51/2(2015-05-01), 160-167 0009-3092 51:2<160 2015 51 10553