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Square kelly (SK), split-type square kelly (STSK)

 

ВБТ

Kellys transfer torque from rotors to drill strings. Upon customer’s request, kellys can be manufactured with counterclockwise rotation.

Technical performances
Normative documents  Technical Specifications TU 1324-034-48416997-2005, API Spec 7-1
Length, mm

11 300... 16 460

We are the exclusive Russian manufacturer of split-type kellys with 28 meter length!

Kelly Designation Square Side Ø Channel Outer Ø Tool Joint Thread
Box End Pin End Box End Pin Connection
Var. 1 Var. 2 Var. 1 Var. 2
mm inch mm дюймы mm inch mm inch mminch GOST API GOST API GOST API

SK-63

63,5

2 1/2

31,8

1 1/4

104,8

4 1/8

120,6

4 3/4

85,7

3 3/8

3-86Л

NC31 LH

3-102Л

NC38 LH

З-73

NC26

SK-76

76,2

3

44,4

1 3/4

104,8

4 1/8

З-86

NC31

SK-80

80

3 1/8

50

2   

SK-89

88,9

3 1/2

57,2

2 1/4

120,6

4 3/4

146

5 3/4

120,6

4 3/4

3-102Л

NС38 LH

3-121Л

4 1/2 FH LH

3-102

NC38

139,7

5 1/2

3-117Л

4 1/2 REG LH

3-118Л

NC44 LH

SK-108

108

4 1/4

71,4

2 13/16

146,1

5 3/4

139,7

5 1/2

3-121Л

4 1/2 FH LH

3-118Л

NC44 LH

3-118

NC44

SK-133

133,4

5 1/4

82,6

3 1/4

196,8

7 3/4

 

 

177,8

7

3-152Л

6 5/8 REG LH

 

 

3-147

5 1/2 FH

3-149

NC56

SK-140

139,7

5 1/2

3-147

5 1/2 FH

184,2

7 1/4

3-149

NC56

  • Upon customer’s request, threads of pin and box ends can be changed to other types of equal in strength.
  • Upon customer’s request, the kellys can be hexahedral type.

NEW!

The Company mastered repair of the split-type square kellys ensuring that square sides will fit after thread recutting.

Catalogue Oilfield and drilling equipment download.


 


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