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反循环钻探技术的应用与发展，是伴随着正循环钻探技术的发展而相应发展起来的一种新型的钻探方法，由于在某种条件下，反循环具有比正循环钻探方法更多的优点，能够取得较优的经济效果，因此，近年来得到了很大发展，应用面逐步扩大，现将有关情况介绍如下。一、反循环钻探技术的基本概况所谓反循环钻探技术，不仅是指在钻进过程中冲洗介质的循环形式和正循环钻探方法的循环形式相反，而且是包括钻头、钻具、护孔和采样方法，以及
The application and development of reverse circulation drilling technology is a new type of drilling method developed along with the development of positive circulation drilling technology. Because under certain conditions, reverse circulation has more advantages than the positive circulation drilling method, As a result, great progress has been made in recent years and the application area has been gradually expanded. The relevant information is as follows. First, the basic overview of reverse circulation drilling technology The so-called reverse circulation drilling technology, not only refers to the process of flushing medium flushing cycle and the positive cycle drilling method is the opposite of the cycle, but also includes the drill, drill, hole and sampling methods ,as well as