Productivity of SBSH-250 MNA-32 drilling rig at JSC "Korshunovskii GOK".
In December 24-25, 2005 a time-study of driiling by the rig SBSH-250 MNA (32) was performed in Rudnogorsk mine by the specialists of JSC "Rudgormash" altogether with the representatives of JSC "Korshunovskii GOK". The drilling was held by SBSH-250 MNA-32 rig, manufactured by JSC "Rudgormash", that is supplied with an oil pumping station 091.02.69.0000, pumps of non-regulared productivity type and motor (drive 22kW), PV-40.
The results were the following:
Date Rock strength, f Air temerature, C Time of work, h Running meters, m
24.12.2005 6-10 -40 12 240,5
25.12.2005 6-10 -40 6 150
Specialists presume that productivity of SBSH-250 MNA-32 equipped with oil pumping station 091.02.78.0000 and motor with direct-current drive will increase by 20%.