1.size 12-1/4"
2.API 6-5/8" ,number of nozzle is three
3.ISO9001 certificate
4.BV Certificate
instruction as follow:super-MD,super-high speed motor bit
Turbine drilling tools are used widely in Russia oilfield, bits run with super high speed, rotary speed of turbine
which is matched with 11 5/8” and 81/ 2” bits reaches to 400rpm ~600rpm, therefore, service life of normal
cone bits is about 10 hours usually. Jianghailong has invented roller-journal compound bearing for working situation with super high rotary speed, which matches with metal seal,
in order to provide bit with high bearing reliability and long life in situation of super high rotary speed.
Jianghailong has also developed cutting structure and extended double nozzle hydraulic structure to be suitable
for drilling with super high rotary speed. SMD super-high speed motor bit matches with turbine while be used in Russia market, the stable service life of bit can
reaches to more than 30 hours in the work situation of above 400 RPM.
SMD super high speed motor bit is recommended to work in high rotary speed from 250rpm to 600rpm,
which is quite economical.