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Synthesis of organic polycationic molecular membrane oil-displacement agent and valuation of its oil displacement efficiency
Author(s): 
Pages: 81-84,1
Year: Issue:  5
Journal: Journal of Xi'an Petroleum Institute(Natural Scien

Keyword:  molecular membrane oil-displacement agentorganic polycationcore displacementlithography modeloil-displacement efficiency;
Abstract: An organic polycationic molecular membrane oil-displacement agent is synthesized are Synthesised by free radical polymerization and ring-opening polymerization of epichlorohydrin and dimethylamine in aqueous solution under the initiation of persulfate and sulfite.The IR and NMR analysis results show that the obtained product is the designed organic polycationic molecular membrane oil-displacement agent.The migration law and distribution law of the molecular membrane oil-displacement agent in the process of oil-displacement are analyzed by core lithography micro-model.The oil-displacement efficiency of the organic polycationic molecular membrane oil-displacement agent is evaluated by means of the displacement experiments of the natural cores from Ⅱ4-5strata of north Shuanghe block in Henan Oilfield.It is shown that final recovery factor can reach to 59.19%,the recovery factor is increased by 10.7%.
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