Xinjiang Petroleum Geology

Xinjiang Petroleum Geology ›› 2009, Vol. 30 ›› Issue (5): 637-640.

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Synthesis of Oil-Displacing Agent with Dendritic Molecules and Its Evaluation

ZHENG Xing-neng1, YE Zhong-bin1, YE Zheng-rong2, GUO Yong-jun1,3, LIU Jian-xin2   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500,China;
    2.Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    3.Institute of Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2009-03-13 Revised:2009-04-30 Online:2009-10-01 Published:2020-09-30

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Abstract: Amine terminated poly (amidoamine) dendrimer is synthesized via one-step polymerization and four kinds of quaternary ammonium salts are produced by reaction of PAMAM's terminal amine groups with alkyl halides. PAMAM and its quaternary ammonium salts are characterized by FTIR and GPC. The measurement of adsorption on core powder, the evaluation of interfacial properties (water surface tension and its effect on core wettability) and the core flow test indicate that PAMAMC12 in mid-low permeability formation and PAMAMC3/PAMAMMe in higher permeability and oleophylic formation exhibit excellent oil-displacing performances. This study offers a novel idea for the development of oil-displacing agents suitable to mid-low permeability formation.

Key words: polymer, adsorption, wettability, oil-displacing agent

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