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  1. No Access

    Chapter and Conference Paper

    Properties of Surfactant Solution for Foam-Flooding

    The chemical flooding in Daqing Oilfield has entered the following water flooding stage, and about more than 50% of the crude oil remains in the reservoir. In order to maintain the sustainable and effective de...

    H. S. Liu, G. Chen, R. B. Cao, P. H. Han… in Proceedings of the International Field Exp… (2020)

  2. No Access

    Chapter and Conference Paper

    Post-flooding with Associative Polymer/Alkali/Surfactant Ternary System After Polymer-Enhanced Oil Recovery

    Successful story has been witnessed on polymer flooding in Daqing oilfield, from which the average oil recovery factor in major reservoirs can reach 15% or even higher. However, some of reservoir blocks with p...

    P. H. Han, R. B. Cao, H. S. Liu, W. Yan… in Proceedings of the International Field Exp… (2020)

  3. No Access

    Chapter and Conference Paper

    A Novel ECN-Based Congestion Control and Avoidance Algorithm with Forecasting and Verifying

    The congestion control and avoidance algorithms can be divided into source and link algorithms. The source algorithms are based on ’pipe’ model; which includes TCP Tahoe, TCP Reno, TCP NewReno, SACK and TCP Ve...

    H. -s. Liu, K. Xu, M. -w. Xu in Telecommunications and Networking - ICT 2004 (2004)

  4. No Access

    Chapter and Conference Paper

    Evasion in the plane

    We consider dynamical systems subject to control by two agents, one of whom desires that no trajectory of the system, emanating from outside a given set, intersects that set no matter what the admissible actio...

    G. Leitmann, H. S. Liu in Optimization Techniques Part 1 (1978)