同时介绍如何提高有效的环空黏度来增强井眼净化能力。
In the meantime, the paper introduces how to raise the effective viscosity in annular so as to enhance wellbore purification capacity.
解决空气雾化钻井井眼净化问题，试验架是关键装置、基础设备和必要手段。
To solve the problem of well bore cleaning during air and mist drilling, the test device is the key equipment and essential means.
分析了钻井施工难点：鱼骨剖面设计和井眼轨迹控制难度大，井眼净化要求高。
This paper analyzes the difficult points in drilling operation, such as the difficult profile design and well track control and the high demand for wellbore cleaning.
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