求翻译：目前，国内外关于表面活性剂驱油这一问题已进行了大量的实验研究，研究方法有多种，但大多采用岩心驱替实验是什么意思？

At present, the surfactant flooding problems at home and abroad has been a lot of experimental research methods, but most of them using core flooding experiments

Currently, the domestic and international live concerning surface get rid of this problem of the oil to have already carried on a great deal of experiment the research, the research method contain variety, but mostly adopt the rock heart to get rid of to substitute the experiment

At present, domestic and foreign drove oil this question about the surface active agent to conduct the massive experimental study, the research technique had many kinds of, but mostly used the core sample displacement experiment

At present, on the problem of surfactant flooding at home and abroad have made a lot of experimental research, research there are many ways, but mostly core flooding experiment

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