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DRILLING DERRICKS Print

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

Classification:

By function:
•for workover rigs;
•for mobile drilling rigs;
•for cluster and land drilling rigs;
•for offshore drilling rigs. 

By design:

•mast derricks (А-type, U-type, 4-leg derricks, open face derricks);
•tower derricks. 
Today in drilling rigs design, open face derricks are the most widely applicable.

Open face derrick advantages:
•convenience of the top drive installation;
•the substructure erection in down position without special heavy-duty cranes;
•reduction of rig-up time;
•drilling rig transportation from one drilling location to another in vertical position by large block,
without additional re-erection.

SPECIFICATIONS

Designation/
Characteristics

Mobile rigs derricks

Cluster rigs derricks

Land rigs derricks

UМ 31/160 ОG-R

UМ 31/175 ОG-R

UМ 45-225R

UМ 45/250R

UМ 45/270R

UМ 46/320 OR

B 53/400 R

UМ4 45/450АR

UМ 45/320А

ВМР 45/320-II

UМ 46/320 ОG-R

UМ4 45/
500 А
R-SVP

UМ 46/600 ОG-R

Max. static hook load, mt (lbs.)

190 (418878)

210 (462970)

270 (595248)

300 (661386)

325 (716502)

385 (848779)

480 (1058218)

540 (1190496)

385 (848779)

385 (848779)

385 (848779)

600 (1322773)

600 (1322773)

Distance between rotor table and lower part of crown block frame, ft

101.7

101.7

149.7

146.9

146.9

150.9

171.5

148.6

147

147

150.9

148.9

150.9

Distance between pins of lower and upper hinges at the support, ft

113.7

113.7

156

156

156

161.1

-

145.9

156

156

148.9

145.9

148.9

Subbase (distance between pins of hinges at the support of derrick legs), ft

 

 

 

 

 

 

 

 

 

 

 

 

 

along catwalk axis

4.9

4.9

-

-

-

 

32.8

36.0

-

-

-

36.0

-

transversely catwalk axis

10.49

10.49

33.79

33.79

33.79

32.8

32.8

26.24

33.79

33.79

32.8

26.24

32.8

Upper base (distance between crown block frame supports), ft

 

 

 

 

 

 

 

 

 

 

 

 

 

along catwalk axis

2.9

2.9

7.5

7.5

7.5

8.5

9.18

10.17

7.5

7.5

8.5

10.17

-

transversely catwalk axis

5.57

5.57

8.5

9.6

9.6

8.5

9.18

7.0

9.6

9.6

8.5

7.2

-

 


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