Study of the mechanisms of streamline-adjustment-assisted heterogeneous combination flooding for enhanced oil recovery for post-polymer-flooded reservoirs
投稿时间:2018-01-31  
英文关键词:Plate sand-pack model, Heterogeneous combination flooding, Streamline adjustment, Polymer flooding, Displacement
基金项目:The authors greatly appreciate the financial support from the National Natural Science Foundation of China (Grant No. 51574269), the National Science Foundation for Distinguished Young Scholars of China (Grant No. 51625403), the Important National Science and Technology Specific Projects of China (Grant No. 2016ZX05025-003), the Fundamental Research Funds for the Central Universities (Grant No. 15CX08004A, 18CX02169A), China Postdoctoral Science Foundation (Grant No. 2017M622319), and the Natural Science Foundation of Shandong Province (Grant No. ZR2018BEE004).
作者单位
Qing-Jun Du Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, Shandong, P. R. China
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China 
Guang-Ming Pan School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
Bohai Petroleum Research Institution, Tianjin Branch of CNOOC Ltd, Tianjin 300452, P. R. China 
Jian Hou Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, Shandong, P. R. China
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China 
Lan-Lei Guo4 Research Institute of Exploration and Development, Shengli Oilfield SINOPEC, Dongying 257061, Shandong, P. R. China 
Rong-Rong Wang Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, Shandong, P. R. China
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China 
Zhi-Zeng Xia Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, Shandong, P. R. China
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China 
Kang Zhou Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, Shandong, P. R. China
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China 
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英文摘要:
      Streamline-adjustment-assisted heterogeneous combination flooding is a new technology for enhanced oil recovery for postpolymer- flooded reservoirs. In this work, we first carried out a series of 2D visualization experiments for different chemical flooding scenarios after polymer flooding. Then, we explored the synergistic mechanisms of streamline-adjustment-assisted heterogeneous combination flooding for enhanced oil recovery and the contribution of each component. Test results show that for single heterogeneous combination flooding, the residual oil in the main streamline area after polymer flooding is ready to be driven, but it is difficult to be recovered in the non-main streamline area. Due to the effect of drainage and synergism, the streamline-adjustment-assisted heterogeneous combination flooding diverts the injected chemical agent from the main streamline area to the non-main streamline area, which consequently expands the active area of chemical flooding. Based on the results from the single-factor contribution of the quantitative analysis, the contribution of temporary plugging and profile control of branched preformed particle gels ranks in the first place and followed by the polymer profile control and the effect of streamline adjustment. On the contrary, the surfactant contributes the least to enhance the efficiency of oil displacement.
Qing-Jun Du,Guang-Ming Pan,Jian Hou,Lan-Lei Guo4,Rong-Rong Wang,Zhi-Zeng Xia,Kang Zhou,2019.Study of the mechanisms of streamline-adjustment-assisted heterogeneous combination flooding for enhanced oil recovery for post-polymer-flooded reservoirs.Petroleum Science,(3):606~618.
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