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 |
1500 |
1400 |
|
Brake operation range ° |
-- |
300 |
-- |
325 |
-- |
-- |
|
Shift gears |
2 |
4+2R |
1 |
4+2R |
2 |
1 |
|
Main brake |
-- |
Band brake |
-- |
Band 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 |
1300 |
1400×269 |
1600 |
2100 |
|
Brake operation range ° |
330 |
-- |
-- |
330 |
-- |
-- |
|
Shift gears |
4+2R |
2 |
1 |
4+2R |
1 |
2 |
|
Main brake |
Band brake |
hydraulic disc brake |
-- |
Band 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 on Site
Drawwoks Operating on Site
Drawwoks at Port
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
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