The paper introduces the typical examples for resolving these problems by air-lift reverse circulation drilling technology.

介绍了应用气举反循环钻进工艺解决这些疑难技术问题的成功案例。

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While adopt the reverse circulation perfusion stake craftwork, can solve this problem, and this craftwork has been popularized broadly.

通过采取反循环成桩工艺，可很好地解决这些问题，目前该工艺得到了广泛的推广。

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Water well drillers may specialize in a specific method of drilling, such as cable, rotary, auger, hammer or reverse circulation drilling.

水井钻井工可能会专注于一个特定的钻探方法，如电缆，旋转，钻，锤或反向循环钻探。

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During the third quarter, the company continued what it described as an aggressive drill campaign with 13 core and 10 reverse circulation rigs in operation.

FORBES: Kinross: Tasiast-Expansion Commitment To Hit $1 Billion By Year-End; Production Set For 2014