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反循环钻探具有内在的一系列特点，其一，由于内管冲洗液上返速度高，携带岩芯（样）能力强，排屑彻底，孔内（底）清洁，避免了岩芯（样）在孔底重覆机械破碎，因而提高了钻进效率。其二，由于循环介质的连续性，形成岩芯（样）依次连续返出地面，防止了污染，因而岩心（样）品质好，具有良好的代表性。其三，亦由于内管冲洗液上返速度高，造成的管外与管内流速比值小带来的多种优点，因而为大口径的水文、水井钻探和工程施工钻探开辟了前景。其四，由于钻进工艺性的特点，形成钻具结构相应较简单，因而具有灵活的任选性。即在常规的正循环水井钻机上，只要配上反循环钻具，就可实现反循环钻探。鉴于上述特点，反循环钻探所特有的生命力，引起了行家们的极大关注。
Reverse circulation drilling has a series of inherent characteristics. Firstly, due to the high velocity of the inner tube flushing fluid, the ability to carry the core (sample) is strong, the chip removal is complete, the inner (bottom) Repeated mechanical cracks in the bottom of the hole, thus improving the drilling efficiency. Second, due to the continuity of the circulating medium, the formation of core (in turn) back to the ground in order to prevent pollution, so the core (like) good quality, with good representation. Thirdly, it has also opened up the prospect for large-scale hydrology, well drilling and construction drilling due to the many advantages brought by the high rate of backwashing of the inner pipe flushing fluid and the small ratio of flow rate outside the pipe to the pipe. Fourth, due to the characteristics of drilling technology, forming a relatively simple structure of the drill, which has the flexibility of optional. That is, in the conventional positive circulation well drilling rig, as long as coupled with reverse circulation drilling tools, can achieve reverse circulation drilling. In view of the above characteristics, the unique vitality of reverse circulation drilling has aroused great concern of experts.