Square/Hexagonal Rotary Kelly (Drill Kelly)
High Quality Square and Hexagonal Rotary Kelly For Oil-Field
Z03 Series Z04 Series
Summary
- 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 precision-machined kelly is a 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.
- Straightness is the key manufacturing process. Straightness is checked before, during and after each machining operation. Flats are precision-milled to API and NS-1 specifications. All milling is performed on specially designed rigid kelly mills. Each kelly is furnished with a pressed steel thread protectors.
Features and Benefits:
- Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a brinell hardness range of 285-341 and a minimum average charpy impact value of 40 ft-lbs;
- Ends and drive sections, IDs and connections machined and inspected to API and NS-1 specifications;
- Kelly bars ultrasonically inspected over full length and section;
- Shipped in a protective steel-cased scabbard;
When ordering please specify:
- Kelly type (square or hexagonal);
- Nominal size and overall length;
- Upper and lower connections;
Specifications -- Rotary Kelly
Nom Size(in) |
Square Kelly Product Code |
Hexagonal Kelly Product Code |
Top Connection(LH) |
Bottom Connection |
I.D.(in) |
|||
Standard O.D.(in) |
Optional O.D.(in) |
Square O.D.(in) |
Hex. O.D.(in) |
Square |
Hex. |
|||
2 1/2 |
Z03-130000 |
|
6 5/8 REGLH 7 3/4 |
4 1/2 REGLH 5 3/4 |
NC26 85.7 |
|
1 1/4 |
|
3 |
Z03-130100 |
Z04-130000 |
6 5/8 REGLH 7 3/4 |
4 1/2 REGLH 5 3/4 |
NC31 4 1/8 |
NC26 3 3/8 |
1 3/4 |
1 1/4 |
3 1/2 |
Z03-130200 |
Z04-130100 |
6 5/8 REGLH 7 3/4 |
4 1/2 REGLH 5 3/4 |
NC38 4 3/4 |
NC31 4 1/8 |
2 1/4 |
1 3/4 |
4 1/2 |
Z03-130300 |
Z04-130200 |
6 5/8 REGLH 7 3/4 |
4 1/2 REGLH 5 3/4 |
NC46 6 1/4 |
NC38 4 3/4 |
2 13/16 |
2 1/4 |
Z03-130400 |
Z04-130300 |
6 5/8 REGLH 7 3/4 |
4 1/2 REGLH 5 3/4 |
NC50 6 3/8 |
NC38 4 3/4 |
2 13/16 |
2 1/4 |
|
5 1/4 |
Z03-130500 |
Z04-130400 |
6 5/8 REGLH 7 3/4 |
|
5 1/2 FH 7 |
NC46 6 1/4 |
3 1/4 |
3 |
Z03-130600 |
Z04-130500 |
6 5/8 REGLH 7 3/4 |
|
NC56 7 |
NC50 6 3/8 |
3 1/4 |
3 1/4 |
|
6 |
|
Z04-130600 |
6 5/8 REGLH 7 3/4 |
|
|
5 1/2FH 7 |
|
3 1/2 |
|
Z04-130700 |
6 5/8 REGLH 7 3/4 |
|
|
NC56 7 |
|
3 1/2 |
|
|
|
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In our factory, we can produce special-use machine tools for oil-field, Including CNC or Non-CNC Oil Country Lathe(Pipe Thread Lathe), CNC or Non-CNC Deep Hole Boring and Drilling Machine, CNC Deep Hole Honing Machine, etc.
Oil Pipe Thread Lathe
Deep Hole Machine
Send Inquiry to This Supplier
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