The new directional oil well was finished on Juzhno-Priobskoe oilfield for NAFTAGAZ company, at ambient temperature -51oC, with the using of the top drive systemDQ50B, which was set on the drilling rig «УРАЛМАШ 3000 ЭУК 1М».
The well depth was more than 4000 m.
Performance of the top drive had the following maximum values:
- rotation speed 80 rpm/min;
- torque 33 kNm.
Our top drives are effective in the drilling of obliquely-directional and horizontal wells with long borehole.