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Drilling rig model

ZJ70/45000L rig

ZJ70/4500D rig

ZJ70/4500LDB rig

ZJ70/4500DBS rig

Nominal drilling depth

127 drill pipes, 7000 meters

127 drill pipes, 7000 meters

127 drill pipes, 7000 meters

127 drill pipes, 7000 meters

maximum load

4500Kn

4500Kn

4500Kn

4500Kn

Traveling system gear train

6X7

6X7

6X7

6X7

Wire rope diameter

38mm

38mm

38mm

38mm

Maximum input power of winch

1470Kw(2000Hp)

1470Kw(2000Hp)

1470Kw(2000Hp)

1470Kw(2000Hp)

Winch gear

6 forward and 2 backward

stepless speed change

stepless speed change

stepless speed change

Service brake

Hydraulic disc brake

Hydraulic disc brake

Hydraulic disc brake

Hydraulic disc brake

Auxiliary braking

electromagnetic eddy current brake

electromagnetic eddy current brake

electromagnetic eddy current brake

electromagnetic eddy current brake

Rotary table opening diameter

952.5mm

952.5mm

952.5mm

952.5mm

Derrick type

K type

K type

K type

K type

derrick height

45m

45m

45m

45m

Base height

7.5m

7.5/9m

9/10.5m

9/10.5m

Base clearance height

6.3m

6.3/7.6m

7.6/9m

7.6/9m