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在不同的地质环境中，使用不同的岩心钻进方式，可以保证地质勘探工作的顺利进行。
To use different core drilling method in different geological environments can ensure the smooth progress of geological exploration work.
基于实钻研究，分析空气泡沫钻进技术在地质岩心钻探中应用的技术优势和社会经济意义；
The article analyses the technique superiority and social economic meanings of the air-foam drilling on the basis of the studying to productive experiment.
采用组合钻具进行跟管钻进，通过随钻跟入的套管保护孔壁，解决因钻孔垮塌导致钻探效率和岩心采取率低等技术难题。
The problems of low drilling efficiency and low core recovery due to borehole collapse were solved with pulling in casing while drilling through using combined BHA with casing.
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