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本文主要介绍了欠平衡冲洗介质空气、雾状气、泡沫.并分析了各欠平衡冲洗介质的性能、作用机理、设备和钻进地层的特点、及适用条件。
This paper mainly introduces the air, mist gas and foam of underbalanced flushing media, and analyzes the performance, mechanism of action, characteristics of equipment and drilling formation, and applicable conditions of each underbalanced flushing medium.