空心玻璃微珠的滚动性能好，可提高机械钻速，从而显著提高钻井效率。
Hollow glass microspheres has a good rolling performance, and it can increase the drilling rate, and Significantly improve the drilling efficiency.
欠平衡钻井技术可以降低地层损害、提高机械钻速，所以在世界范围内被逐渐采用。
Underbalanced drilling technology can increase ROP and decrease formation damage, so it is increasingly used worldwide.
DBS钻机性能优良，能延长钻头使用寿命，提高机械钻速，并使钻井更安全、科学。
The perfect performance of the DBS drilling rig extends life of drill bit, enhances drilling speed and makes the drilling work more secure and scientific.
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