Sentence examples for performance of drill from inspiring English sources

The primary remaining problem is improving performance of drill heads in 'warm' ice close to its pressure melting point where drilling becomes complicated by icing of the cutters and drill head, packing of drill clearances, and a decrease in penetration rate.

Therefore, it is a trade-off between the performance of drill-down and roll-up when tuning the index interval.

At the same time it can improve the sealing performance of drilled boreholes.

The performance of drilling fluids influences the efficiency of drilling operations.

The results indicate that the performance of drilling process can be improved effectively through this approach.

The effects of DEM on the rheological performance of drilling fluids measured in accordance with GB/T 16783.1-2006 [18] were shown in Table 2.

The paper focuses on the effect of magnesium saltwater influx on the performance of drilling fluid at elevated temperature in order to know how the fluid reacts in a downhole conditions.

The study demonstrates that NGH drilling requirements under frozen conditions could be met by choosing appropriate treating-agent additives to adjust the performance of drilling fluids and borehole/fluid interaction behavior.

This indicates that with the magnesium salt contamination, there is an advanced decline in the performance of drilling mud and the salt affects the dispersion, hydration and flocculation behavior of the particles which make it incompetent for cutting suspender.

Additives such as Na2CO3, potassium humate (KHM), sodium carboxymethyl cellulose (Na-CMC), and vegetable gum (VG) were introduced to montmorillonite (Mt) slurry to maximize the performance of drilling fluid in terms of rheological behavior and filtration characteristics.

It has been observed, however, that the hole cleaning performance of drilling fluids can be different even if the fluid rheological properties are similar as measured in accordance with API specifications.