MODEL

ZJ50/3150D

ZJ50/3150DB

Nominal drilling depth

11500∼16400ft,3500∼5000m,(4 1/2"DP)9200∼14800ft,2800∼4500m(5"DP)

11500∼16400ft,3500∼5000m,(4 1/2"DP)9200∼14800ft,2800∼4500m(5"DP)

Max. hook load

695000lps  3150kN

695000lps  3150kN

Max. drill stem load

350000lps  1600kN

350000lps  1600kN

Drawworks speed steps

1500HP  1100kw

1500HP  1100kw

Drawworks speed steps

4/stepless

stepless

Main brake model

Hydraulic disk brake/band brake

Hydraulic disk brake/band brake

Auxiliary brake model

Eddy current brake/ETN brake

Eddy current brake/ETN brake

Wirelind diameter

1-3/8"  35mm

1-3/8"  35mm

Crown sheaves number and travelling sheaves number

7×6

7×6

Open diameter of rotary table

37-1/2"  952.5mm

37-1/2"  952.5mm

Rotary table drive type

Independent electric drive

Independent electric drive

Mast type

"K"

"K"

Clear height of mast

148ft  45m

148ft  45m

Substructure height

20.5ft(7.5m),29.5ft(9m),34.5ft(10.5m)

20.5ft(7.5m),29.5ft(9m),34.5ft(10.5m)

Clear height of substructure

20ft(6.12m),25ft(7.62m),30ft(9.12m)

20ft(6.12m),25ft(7.62m),30ft(9.12m)

Power of single mud pump

1600HP   1180kw

1600HP   1180kw

Mud pump sets

2

2

Type of driving

AC-SCR-DC

AC-VDF-AC

Power of main diesel

1500HP   1100kw

1500HP   1100kw

Main diesel sets

3

3

Total volume of mud tank

2100BBL   320 m3

2100BBL   320 m3