ZJ90DB

ZJ90DB

9000m VFD Drilling Rig

Inquiry Number :-+

Detail Info


ZJ90DB Drilling Rig

Features:

n   The drawworks is driven by two AC motors with 1+1R/2+2R step-less speed, and reversal will be realized by AC motor reversal

n   The mud pump is driven by AC motors, which are mounted on the rear skid of mud pump, with V-belt transmission and simple structure

n   The independent driven rotary table runs with 1+1R/2+2R step-less speed and reversal will be realized by AC motor reversal

n   Using AC-DC-AC drive technology, rotary table and drawworks are four quadrant running and full digital vector control.

n   Single drum, gear driven and one/two shifts smooth speed change drawworks is simple in structure and reliable in operation.

n   Feed back/Dynamic brake is adopted to replace eddy current brake as auxiliary brake.

n   Automatic drilling is obtained by drawworks main motor or an independent motor. Intellectual position control for traveling block prevent crown block and rotary table from collision.

n   Real time communication and network is available by using PROFIBUS technology

n   K type mast is suitable for install top drive system

n   Sling shot or swing up substructure and mast are used so that all the equipment can be installed at lower position

Specification:

Model

Unit

ZJ90/6750 DB

Nominal drilling depth(4-1/4” DP)

m

9000

ft

30000

Max. hook load

kn

6750

lbs

1500000

Traveling system

7x8

Wire line dia.

mm

45

In

1-3/4

Rated power of drawworks

kw

2200

hp

3000

Drawworks speed

I or II, smooth change

Braking type

Hyd. Disc brake + regeneration brake

Crown block

type

TC675

Traveling block

type

YC675

OD of block sheaves

mm

1524

Swlive

type

SL675

Rotary table opening

mm

950

in

37.5

Mast type and height (K type)

m

48

ft

157

Substructure type and height (Swing lift)

m

12

ft

40

Clear height under rotary beam

m

10

ft

33

Mud pump number and power

kw

2 x 1176

hp

2 x 1600

Max. pump pressure

mpa

35~52

psi

5000~7500

Power drive mode

AC-DC-AC

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