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Hex. or square Kellys

Hex. or square Kellys

Brand Name: Tianhe
Certification: API 7-1, NS-1
Delivery Time: 30 days
Payment Terms: T/T, LC
Packaging Details: iron rack & shipping scabbard
Tianhe Oil Gas Drilling Tools
Active Member
Mudanjiang Heilongjiang
Business type: Manufacturer, Exporter
Telephone : 86-453-5979984
No. 43 West Diming Street, Mudanjiang City, Heilongjiang Province, China
Supplier`s last login times: within 39 hours


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. TIANHE 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.

TIANHE Kelly has been approved by the NS-1 certification. 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 TIANHE 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)

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


Product Tags:

Hex. square

      

kelly

      

tubular

      

Hex. or square Kellys Images

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