The new directional oil well was completed on Yarainerskoe oilfield for NAFTAGAZ company, at ambient temperature -42oC, with the using of the top drive systemDQ70BS, which was set on the drilling rig ' 3900/225 ЭК '. The well depth was more than 4200 m.
Performance of the top drive had the following maximum values:
- rotation speed 60 rpm/min;
- torque 40 kNm.
Our top drives are effective in the drilling of obliquely-directional and horizontal wells with long borehole.