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ROLLER CONE BITS TESTED IN THE APPLICATIONS OF OPEN PIT VYSOCHAYSHIY

10.11.2015

Volgaburmash Company tested its mining bits 200.0 (7 7/8) AIR532 (R998) and 200.0 (7 7/8) AIR632 (R808) in the applications of open pit Vysochayshiy. The bits were run with drill rigs DML45-LP while drilling vertical wells 4.5–12.5 meters deep in formations with f=8-12, with the drilling modes as follows:
- WOB: 2200-2400 psi;
- RPM: 110-120 rpm;
- air pressure: 4,0-4,4 bar;

As a result, the following performance indicators were achieved:
- 200.0 (7 7/8) AIR532 (R998), meterage = 2395 m, ROP = 30-45 m/h;
- 200.0 (7 7/8) AIR632 (R808), meterage = 2619 m, ROP = 30-60 m/h;
The bits are recommended for further usage in the applications of open pit Vysochayshiy.


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Volgaburmash and Uralburmash are Russia’s largest companies producing rock-cutting tools