Original
By certification 
Rotary Kelly
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. Threads is phosphated, and each Kelly is furnished with a pressed steel thread protectors. Kelly shall be either square or hexagon and conform to the size and dimensions as per API Standard.
Material: AISI 4145H-Mod.
Standard: API 7-1 and NS-1
Type: Square Kelly and hexagonal Kelly
Package: in a protective steel-cased scabbard
Please specify when ordering:
•Kelly type: Square Kelly or Hexagonal Kelly;
•Nominal size and overall length;
•Upper and lower Connections.
Technical Parameters--Rotary Kelly
|
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 13/16 |
2 1/4 |
5 9/16 |
4 25/32 |
6 5/8REG 7 3/4 |
4 1/2REG 5 3/4 |
NC50 6 3/8 |
NC38 4 3/4 |
2 13/16 |
2 1/4 |
5 9/16 |
4 25/32 |
|
|
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 13/16 |
||||
6 5/8REG 7 3/4 |
NC56 7 |
3 1/2 |
6 13/16 |
|||||
If you have any further requirements, please feel free to contact us by sales@sxgtpm.com
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