AZOT MINING SERVICE, LLC IMPROVED ITS AVERAGE METERS DRILLED BY 14% USING DRILL BIT 200.0 (7 7/8) AIRJ622
AZOT MINING SERVICE, LLC tested drill bits 200.0 (7 7/8) AIRJ622 produced by Volgaburmash, JSC in the field applications of open pit Kamnerechenskiy aggregate preparation plant.
Drill bits 200.0 (7 7/8) AIRJ622 are designed for full diameter drilling in hard abrasive formations with side flushing with air or air-water mixture. The connecting thread is З-117. The pin is fitted with back pressure valve. The bits are equipped with exchangeable nozzles.
The bits were tested while drilling directional and vertical wells, 14.1-18.7m in XX (f=20) drillability formations. The bits were run with drill rig DML-1200 with the following drilling modes:
- WOB - 2700-3000 psi;
- RPM - 90-115 rpm.
The average meters drilled reached 464 meters which is by 14% more than achieved with bits produced by a foreign competitor with similar working parameters which had been run in Kamnerechenskiy open pit earlier.
Volgaburmash and Uralburmash are Russia’s largest companies producing rock-cutting tools