The catheters with core was selected inexperiment group, and without corein 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。
2
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.
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.