Studies on Viscosity Enhancement of P(AM-AA)/P(AM-DMDAAC) Complex Used as Polymer Flooding Agent

Abstract

Abstract: The viscosity enhancement, resistance to temperature and salt, as well as the oil recovery rate of poly (acrylamide-acrylic acid)/poly (acrylamide-dimethyldiallylammoniumchloride) [P (AM-AA)/P (AM-DMDAAC)] intermacromolecular complex used for polymer flooding agent were studied by means of viscosity measurement and simulated enhanced oil recovery test.The experimental results show that when AAmolar content in P(AM-AA) is 27-02%, DMDAACmolar content in P(AM-DMDAAC) is 4-59%, and the weight ratio of P (AM-AA) to P (AM-DMDAAC) is 5O/50, the viscosity of complexed solution gets its maxium, 3.5 times high as that of P (AM-AA) solution.Compared to the constituents,P(AM-AA)/P(AM-DMDAAC) complex solution exhibits better tolerance to temperature and salt.The result of simulated enhanced oil recovery test shows that, using P(AM-AA)/P(AM-DMDAAC) complex as polymer flooding agent, the oil recovery rate could reach 61-91 %, being 11.91 % higher than the rate of 50% reached by water flooding.

Key words: Intermacromolecular complex solution, Polymer flooding agent, Viscosity, Enhanced oil recovery

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DAN Yi, WANG Qi . Studies on Viscosity Enhancement of P(AM-AA)/P(AM-DMDAAC) Complex Used as Polymer Flooding Agent[J]. Chem. J. Chinese Universities, 1997, 18(5): 818.

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Studies on Viscosity Enhancement of P(AM-AA)/P(AM-DMDAAC) Complex Used as Polymer Flooding Agent

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