Drawworks

Drawworks

Drawworks

Features of Drawworks:

Conventional Drawworks:

  • API Spec 7K;
  • Alloy steel shaft with roller bearing supports are;
  • Forced lubrication for all chains;
  • Grooved drum: there are ventilating air tube clutches at the high/ low speed end of the drum. Circulated water forced cooling mode is adopted for brake hub (the brake disc of disc brake uses circulated water forced cooling or air cooling), which has been surface quenched, with good wear resistance, long service life;
  • Sprocket tooth profile surface has been quenched at the intermediate frequency;
  • All shifting clutches are involute spline gear clutch.
  • The main brake is band brake or hydraulic disc brake. Auxiliary brake has been equipped with eddy electromagnetic brake or EATON brake.

Mono-shaft Drawworks:

  • Consisting of AC VF motor, gear reducer, hydraulic disc brake, DW frame, drum shaft assembly, auto-bit feeding device and control system, etc;
  • Driven by powerful AC VF motors with a wide VF speed regulation scope;
  • High efficient gear drive with less vibration, low noise and long service life;
  • No shifting device for the drawworks;
  • AC VF regulator for stepless regulation;
  • Mono-shaft grooved drum structure with less parts, smaller volume and less weight compared with other types;
  • Hydraulic disc brake as main brake and dynamic brake as auxiliary brake;
  • Equipped with separate AC VF drive device and computer auto control system for the functions of auto bit feeding, real time control, monitoring and analysis of tripping in condition and drilling condition to realize optimized drilling operation;

Planetary Reducer Drawworks:

  • With a wide scope of transmitted power;
  • Compact structure and small size;
  • High speed ratio;
  • High transmission efficiency;
  • NGW 2K-H planetary reducer to reasonably choose uniform load device;
  • Symmetrical structure to realize uniform load and uniform power dividing;
  • 1/4+ less than conventional drawworks in weight and size;
  • High torque output and hook speed;

Specifications of Drawworks:

Model

JC20DB

JC30

JC30DB

JC40

JC40D

JC40DB

Nominal drilling depth (5″DP) m

2000

3000

3000

4000

4000

4000

Max. input power kW

400

560

600

735

735

1000

Max. pull of fast line kN

200

210

210

275

275

275

Nominal diameter of wireline mm

19

29

29

32

32

32

Drum size(D×W) mm

457×1000

580×1185

580×1185

640×1139

640×1139

640×1139

Brake hub size mm

--

900×250

--

1400×269
1600

1500

1400

Brake operation range °

--

300

--

325

--

--

Shift gears

2

4+2R

1

4+2R

2

1

Main brake

--

Band brake
hydraulic disc brake

--

Band brake
hydraulic disc brake

hydraulic disc brake

--

Auxiliary brake

--

DS30

--

DS40

DS40

--

Speed and function control

Dynamic brake, AC VF control

--

Dynamic brake, AC VF control

--

--

Dynamic brake, AC VF control

Backup brake and manual control

hydraulic disc brake

--

hydraulic disc brake

--

--

hydraulic disc brake

Model

JC50

JC50D

JC50DB

JC70

JC70DB

JC90DB

Nominal drilling depth (5″DP) m

5000

5000

5000

7000

7000

9000

Max. input power kW

1100

1100

1200

1470

1940

3200

Max. pull of fast line kN

350

350

350

487

487

643

Nominal diameter of wireline mm

35

35

35

38

38.1

45

Drum size(D×W) mm

685×1209

685×1245

685×1245

770×1439

770×1439

980x1840

Brake hub size mm

1400×269
1600

1600

1300

1400×269
1600

1600

2100

Brake operation range °

330

--

--

330

--

--

Shift gears

4+2R

2

1

4+2R

1

2

Main brake

Band brake
hydraulic disc brake

hydraulic disc brake

--

Band brake
hydraulic disc brake

hydraulic disc brake

Auxiliary brake

DS50

DS50

--

DS70

--

--

Speed and function control

--

--

Dynamic brake, AC VF control

--

Dynamic brake, AC VF control

Dynamic brake, AC VF control

Backup brake and manual control

--

--

hydraulic disc brake

--

hydraulic disc brake

--

Planetary Reducer Drawworks

Model

JC70DB

JC90DB

JC120DBB

Rated input power kW

1400

2800

2800

Nominal drill depth (m)

7000

9000

12000

Rated fast line force (kN)

480

770

850

Nominal dia. of steel wire rope (mm)

φ38

φ45

φ48

Drum (Dia.×L) mm

φ1368×1165

φ1496×1965

φ1396×1616

Hook speed (m/s)

1.69

1.69

1.45

Speed & function control

Dynamic brake & AC variable frequency control

Brake

Main brake: floating disc brake; auxiliary brake: dynamic braking

Overall dimension (L×W×H) mm

4915×2495×2740

8240×2495×2830

8660×2320×2830

DW weight (T)

30.2

51

55

Pictures of Drawworks:

Drawwoks in Workshop.jpg

Drawwoks in Workshop

Drawwoks on Site.jpg

Drawwoks on Site

Drawwoks Operating on Site.JPG

Drawwoks Operating on Site

Drawwoks at Port.jpg

Drawwoks at Port

Drawwoks - Different Types.jpg

Drawwoks - Different Types

For further and more detailed product information, you are welcome to contact us at any time in any of the following ways.


---------------------------------

Contact:

Aiphen ZHANG
Sales Manager
Chongqing Hi-Sea Marine Equipment Import & Export Co., Ltd.
Address: Unit 20-5, Building of Chongqing General Chamber of Commerce, No.2, Hongjin Street, Yubei District, Chongqing 401147, China
E-mail: oildept@hiseamarine.com

CONTACT WITH US NOW

Our mail: manager@hiseamarine.com

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