Effects of trapping number on biopolymer flooding recovery of carbonate reservoirs  

作　　者：AL-SHALABI Emad W. 

机构地区：[1]Petroleum Engineering Department,Khalifa University of Science and Technology,Abu Dhabi 127788,UAE

出　　处：《Petroleum Exploration and Development》2022年第4期895-905,共11页石油勘探与开发（英文版）

基　　金：Khalifa University of Science and Technology for funding this research under Award No. [FSU-2018-26]

摘　　要：The effects of trapping number on enhanced oil recovery by schizophyllan biopolymer flooding in carbonate reservoirs were investigated by running several 1D simulations using measured reservoir rock and fluid data.Sensitivity analysis was performed on different uncertain parameters to history match the oil recovery obtained in the core flooding experiment.These parameters include inaccessible pore volume(IPV),biopolymer adsorption,permeability reduction factor,shear rate coefficient,hardness of injection water,and trapping number.The IPV,biopolymer adsorption,permeability reduction factor,shear rate coefficient and hardness of injection water have negligible effects on oil recovery by biopolymer flooding.Also,history matching of oil recovery data was not possible when these parameters were varied within their typical range of values.When trapping number effect was considered through capillary desaturation curve(CDC),residual oil saturation was reduced from 25.1%without considering its effect or under low trapping number to 10.0%,and the fitting effect for recovery was better.Therefore,we can’t neglect the trapping number effect during biopolymer flooding simulation in the carbonate reservoirs.

关 键 词：carbonate reservoir biopolymer flooding schizophyllan biopolymer trapping number enhanced oil recovery 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]