High Precision Hydraulic Rotary Drilling Rig With 127mm Drilling Depth , Slingshot Type

J70/4500DBS

Cantilevel type substructure, whose rig floor can reach 10.5m , is more suitable for exploration and exploitation of HP gas well; driller's cabin is separated from drill floor, which can independently lifted to its position by hydraulic and avoid effect caused by drill floor vibration on instruments and control elements in it.

Cooperate with top drive, three sets of 1600 hp VF mud pump provide good conditions for inclined wells and directional wells drilling.

Main technical parameters

1

Nominal drilling depth

7000m ( 114mmDP )

10

Substructure type

slingshot type

6000m ( 127mmDP )

2

Max hook load

4500kN

11

Substructure height and clear height under RT beam

9m / 7.6m

3

Wire rope system of traveling system

6 × 7 , parallel

12

Mast type and effective height

K TYPE , 45m

4

DW rated power

1470 kW ( 2000hp )

13

Transmission mode

AC-VFD-AC

5

DW gear

One gear stepless speed regulation

14

Quantity/power of main diesel engine

4x 1087 kw

15

Quantity/power of auxiliary generator set

1x292kW

6

Diameter of drilling wire rope

φ 38mm

7

RT opening diameter

950mm ( 37 1/2″ )

16

Quantity and power of VF motor

1×600kW+2 × 1000kw+1 × 45kw +3 × 1200 kw

8

RT gear

One gear stepless speed regulation

Two gears stepless speed regulation

17

HP mud manifold

Φ 103mm ( bore diameter ) ×35MPa

9

Quantity and power of drilling pump

3× 1600 hp pump

18

Effective mud volume of solid control system

430m³