Residual oil start-up mechanism of polymer/surface dual flooding after polymer flooding in medium-high permeability reservoir

HIGHLIGHTS

  • who: Zhang Nan et al. from the Oil Production Technology Institute, Dagang Oilfield, CNPC, Tianjin, China have published the research work: Residual oil start-up mechanism of polymer/surface dual flooding after polymer flooding in medium-high permeability reservoir, in the Journal: (JOURNAL)
  • what: Liu Zheyu made clear the difference between singlemode and complex mode pore structure cores through the in-situ NMR displacement experiment of natural cores, and the main reason for the utilization of residual oil in large and medium pores to enhance oil recovery in binary composite flooding . The analysis shows that . . .

     

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