DRAWWORKS

DRAWWORKS

Maximum input power
500 HP
Number of drums
1
MAIN DRUM
Maximum main wire line pull
20 tf
Diameter of the main wire line
26 mm ( 1 in )
Dimensions of the wire line drum over the groove
∅ 441,6 mm x 823,5 mm
Main drum clutch type
AVB 800 x 250
Main drum clutch - maximum moment
7450 Kg f.m, at P = 10 bar
Brake sheaves dimensions
1120 x 265 mm
Cooling of the brake sheaves
with water

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Maximum input power
500 HP
Number of drums
2
MAIN DRUM
Maximum main wire line pull
20 tf
Diameter of the main wire line
26 mm ( 1 in )
Dimensions of the wire line drum over the groove
∅ 441,6 mm
Main drum clutch type
AVB 800 x 250
Main drum clutch - maximum moment
7450 Kg f.m, at P = 10 bar
Brake sheaves dimensions
1120 x 265 mm
Cooling of the brake sheaves
with water
SAND DRUM
Sand line size ∅ 14
4500 m
Dimensions of drum
∅ 320 x 952 mm
Sand drum clutch: type
CB 600 x 125
Sand drum clutch: maximum torque
2200 kgf.m, at p = 10 bar
Brake sheaves dimensions
∅ 1120 x 216 mm

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Maximum input power
700 HP
Number of drums
1
MAIN DRUM
Maximum main wire line pull
25 tf
Diameter of the main wire line
28,6 mm ( 1 1/8 in )
Dimensions of the wire line drum over the groove
∅ 558 mm x 1053 mm
Main drum clutch type
AVB 900 x 300
Brake sheaves dimensions
1120 x 265 mm
Cooling of the brake sheaves
with coolant
The specification on which it was designed
API 7 K

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Maximum main wire line pull
7,5 tf
Diameter of the main wire line
19 mm ( 3/4 in ) or 22 mm ( 7/8 in )
Dimensions of drum
Ø 372 x 793 mm
Dimensions of the wire line drum over the groove
Ø 393 X 781 mm
Brake sheaves dimensions
Ø 1100 x 210 mm
Main drum clutch type
AB 700 x 125
Cooling of the brake sheaves
cu apă

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Maximum input power
440 HP
Number of drums
1
MAIN DRUM
Maximum main wire line pull
13 tf
Diameter of the main wire line
26 mm ( 1 in )
Dimensions of the wire line drum over the groove
∅ 441,6 mm x 823 mm
Sand line size ∅ 14
14 mm ( 9/16 in )
Dimensions of the drum for the sand line
∅ 524 x 814 mm
Sand line length ∅ 14
2300 m
Brake sheaves dimensions
Ø 1000 x 280 mm
Main drum clutch type
AB 700 x 125
The specification on which it was designed
API 7 K
Cooling of the brake sheaves
with water

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Drawworks bearings set
Brake drum
Brake rims
Brake shoes/plates
Ferodo
Bellows clutch
Rotating head
Rotating coupling
Sealing gaskets set

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The drawworks is the most important equipment node in the maneuvering system of the rig and is used for the handling of drill string or tubing column.

The basic functions of the drawworks are:

  • Hoisting and lowering of the drill string, respectively of the tubing column by means of the maneuvering system;
  • Supporting the drill string, or tubing column respectively, during drilling or workover operations;
  • Production initiation works / putting into operation;
  • Mast and substructure folding works;
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