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Kelly
Source: LONGER | [ 2013-09-16 ] Hits: 2849

 

Kelly is the drive part of whole drill string, it transmit the torsional energy from the rotary table to the bit in the bottom of the hole. The heavy square or hexagonal steel bar supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string.

 Material: AISI 4145H Mod.

Standard: API SPEC 7-1

Package: Protective steel-cased scabbard

Specification:

 

 

Nom
Size
(in)

 Top Connection(LH)

 Bottom Connection

I.D.(in)

Drive Section(in)

Standard  O.D.(in)

Optional   O.D.(in)

Square    O.D.(in)

Hex.    O.D.(in)

Square

Hex.

A

B

2 1/2

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC26     85.7

 /

1 1/4

 /

3 2/7

 /

3

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC31     4 1/8

NC26    3 3/8

1 3/4

1 1/4

4

3 3/8

3 1/2

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC38     4 3/4

NC31    4 1/8

2 1/4

1 3/4

4 1/2

4

4 1/4

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC46     6 1/4

NC38    4 3/4

2 4/5

2 1/4

5 4/7

4 4/5

6 5/8REG    7 3/4

4 1/2REG    5 3/4

NC50     6 3/8

NC38    4 3/4

2 4/5

2 1/4

5 4/7

4 4/5

5 1/4

6 5/8REG    7 3/4

 /

5 1/2FH      7

NC46    6 1/4

3 1/4

3

7

6

6 5/8REG    7 3/4

 /

NC56        7

NC50    6 3/8

3 1/4

3 1/4

7

6

6

6 5/8REG    7 3/4

 /

 /

5 1/2FH     7

 /

3 1/2

 /

6 4/5

6 5/8REG    7 3/4

 /

 /

NC56      7

 /

3 1/2

6 4/5

 

Note: When ordering or requesting for quote, please specify the detailed requirements.

 

 

 

 

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