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阐述了由达西定律反映的驱油过程速率、动力与阻力间的动力学基本关系,分析得到热驱过程耦合现象的本质是,通过加热改善了与驱动有关的传递过程的动力与阻力特性,使得采油速率及采收率同时得到提高。以势场为载体,根据驱油过程“流”与“力”的相互关系,将驱油过程多场耦合的多层次描述慨括为动力势场与阻力势场的耦合、动力势场间的耦合及阻力势场间的耦合。在此基础上,结合渗流力学的基本研究方法,给出多场耦合分析方法的一般步骤。最后以热水驱替过程为例作多场耦合分析,可从新的角度清晰、深入地描述此类过程。
The fundamental relationship between the rate of displacement, the dynamic force and the drag force reflected by Darcy’s law is expounded. The essence of the coupling phenomenon of the thermal-driven process is that the driving force and the resistance characteristic of the drive-related transmission process are improved by heating, Making the recovery rate and oil recovery at the same time improve. Taking the potential field as the carrier, according to the relationship between displacement process, “flow” and “force”, multi-level description of multi-field coupling in oil displacement process is included as the coupling of dynamic potential field and resistance potential field, Coupling between potential fields and coupling between potential fields. On this basis, combined with the basic research methods of seepage mechanics, the general steps of multi-field coupling analysis method are given. Finally, taking the hot water displacement process as an example, we can make a couple of field coupling analyzes, which can be clearly and deeply described from a new perspective.