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DRAWWORKS WITH GEAR TRANSMISSION Print

Drawworks with gear transmission of EТ and АС series is a proprietary design of the size range of 160 to 500 ton load capacity drawworks. Drawworks with gear transmission ensure an effective work during round-trip operations and drilling. 

 

 

 

Design features:

• frame and gear transmission case are an integral unit;

•drawworks lifting shaft is the gear transmission output shaft;

• drawworks braking with the help of the main drive motor;

•two- and single-speed transmission;

• Disc brake made of two discs for holding the drum immobile;

•two brake control systems – operation system and emergency system;

• Drum with “Lebus”-type grooves cut for rope (protective flanges with ring plates made from wear-resistant steel);

•simplicity of the apparatus;

•compactness;

• exclusion in the design of conventional structural components (chain transmission, air clutches, electromagnetic or hydromatic brake, band brake and brake control lever);

• remote control.

Advantages:

• considerably less weight in comparison with chain transmission drawworks;

•“low” and “high” lifting shaft speeds due to the gear transmission:

-“high” speed is for pulling out and running of the drill-string and the empty elevator,

“low” speed is for operations with the casing string and breakdown elimination;

• multifunction drive:

- pulling out and variable running of drilling and casing pipes, raising and lowering of the empty elevator up to the full stop and holding it immobile;

- variable drilling bit feeding at the bit feed controller mode;

•transmission case hermeticity due to seals of a specific design (no cups).


SPECIFICATIONS

Main parameters and characteristics of drawworks with an electric drive and one-speed gear transmission

Drawworks designation

LBU 600 АС-1

LBU-670 EТ1-М

LBU-670 EТ-1

LBU-670 АС1-М

LBU-1500 АС-1

Load capacity, mt/lbs (string-up)

175/385809

200/440924 (5x6)

200/440924 (5x6)

200/440924 (5x6)

320/705479 (5x6)

320/705479 (5x6)

400/881849 (6x7)

Hook lifting speed max, ft/s

 

3.6

3.6

3.6

4.59

4.59

4.1

Drill line diameter, in

1-1/8

1-1/8

1-1/8

1-1/8

1-3/8

1-3/8

1-3/8

Drawworks input power, HP

816

911

911

911

2039

2039

2039

Electric drive type

AC

DC

DC

AC

AC

AC

AC

No. of electric motors

1

1

1

1

2

2

2

Drum size, in

 

 

 

 

 

 

 

diameter

 

22.04

22.04

29.92

29.92

29.92

29.92

length

 

48.07

48.07

57.16

57.16

57.16

70.03

Mechanical brake type

Disc brake

Disc brake

Disc brake

Disc brake

Disc brake

Spot-type disk brake

Spot-type disk brake

Braking mechanism place of installation

Hoisting shaft

Hoisting shaft

Hoisting shaft

Hoisting shaft

Hoisting shaft

Drive shafts of transmission

Hoisting shaft

No. of braking mechanisms

1

1

1

1

1

2

1

Drawworks dimensions, in

 

 

 

 

 

 

 

length

 

121.85

138.77

119.48

228.62

220.74

width

 

124.09

119.01

125.07

129.21

120.86

height

 

79.13

79.13

81.25

914.37

100.78

Drawworks weight, lbs.

 

40344.58

39242.27

37919.5

53285.72

49537.86

Drawworks module dimensions, in

 

 

 

 

 

 

 

length

 

736.22*

239.37

736.22*

304.13

332.95

353.38

width

 

131.49*

146.25

131.49*

131.88

123.22

123.38

height

 

202.75*

101.49

202.75*

113.77

123.07

112.87

Drawworks module weight, lbs.

 

122026*

57100

119050*

72532

72356

78440

Main parameters and characteristics of drawworks with an electric drive and two-speed gear transmission

Drawworks designation

LBU-600 EТ-3

LBU-750 E-SNG

LBU-900 EТ-3

LBU-900 АС-2

LBU-1200 EТ-3

LBU-1500 EТ-3

LBU 1500 АС-2

Load capacity,  mt/lbs  (string-up)

175/385809 (4x5)

225/496040 (5x6)

270/595248 (5x6)

270/595248 (5x6)

400/881849  (6x7)

320/705479  (6x7)

450/992080 (6x7)

Hook lifting speed max,  ft./s

5.25

5.57

5.25

5.25

5.12

4.92

4.92

Drill line diameter, in

1-1/8

1-1/8

1-1/4

1-1/4

1-3/8

1-3/8

1-1/2

Drawworks input power, HP

816

1019

1224

1224

1631

2039

2039

Electric drive type

DC

DC

DC

AC

DC

DC

AC

No. of electric motors

1

1

1

1

1

1

1

Drum size, in

-diameter

-length

19.68х46.85

22.04х46.85

25.19х48.93

25.19х48.93

26.96х54.05

29.92х57.16

29.92х57.16

Mechanical brake type

Spot-type disk brake

Band-brake

Spot-type disk brake

Spot-type disk brake

Spot-type disk brake

Spot-type disk brake

Spot-type disk brake

Braking mechanism place of installation

Intermediate shaft of transmission

Hoisting shaft

Intermediate shaft of transmission

Intermediate shaft of transmission

Intermediate shaft of transmission

Intermediate shaft of transmission

Intermediate shaft of transmission

Drawworks dimensions, in

 

 

 

 

 

 

 

length

130.7

-

186.25

191.96

174.4

309.05

291.92

width

115.55

-

119.05

120.07

125.98

133.54

139.09

height

84.84

-

85.9

94.48

89.17

96.02

98.50

Drawworks weight,  lbs.

43938

-

50904

47234

58532

90257

82287

Drawworks module dimensions, in

 

 

 

 

 

 

 

length

347.24

324.8

332.95

332.95

261.81*

310.86*

450.78

width

125.98

136.8

126.18

128.89

136.06*

215.35*

139.09

height

124.56

92.2

134.56

134.56

94.09*

105.9*

121.7

Drawworks module weight,  lbs.

77437

76897

68270

64346

66579*

99080*

98767

(106112)**

  

 

 

 

 

 

 

 

 

 

 

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