The catheters with core was selected in experiment group, and without core in control group.

实验组以带管芯的气管导管行盲探经鼻气管插管术，对照组则不带管芯。

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By long core displacement experiment and numerical simulation, has made comparative analysis of development effect for injection water, WAG, GAW, and injection gas in PuBei oil field.

通过长岩心驱替实验和数值模拟研究，对葡北油田在注水、水气交替、气水交替、注气驱替方式下的开发效果进行了对比研究。

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Some inaccuracy often exists in the evaluation of foam stability in porous media using glass vessel in laboratory experiment, so the validity time of foam plugging in homogeneous core was researched.

在室内实验中，用玻璃器皿等不能准确反映泡沫在岩心多孔介质中的稳定性，为此研究了泡沫在均质岩心中的泡沫封堵的有效期。

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