TECHNICAL FEATURES

The drawworks and mud pumps are driven by"diesel engine-+torque converter or coupling transmission+chain compound" while rotary table is driven by AC VFD motor or DC motor to obtain smooth speed change and torque limit for better drilling performance;

Rig floor is in two levels. Power and transmission system are installed on the rear low level;

Drawworks is inner speed change. Speed shift adjustmentaand change is easily available by remote pneumatic control; Main brake is hydraulic disk and auxiliary brake is electric magnetic eddy brake;

Box or front level with swing lift and rear level with box type substructure is available; Ample space on rig floor is available for convenient operation;

Module design is provided for reasonable arrange-ment, power compensation and high use ratio; Compound can be used to drive the energy saving generator and automatic air compressor; Top drive drilling system can be equipped;

Integrated skid rail may be provided to meet requirements for cluster well drilling.