Kelly By Tianhe Oil Group,

Kelly

FOB Price

Get Latest Price

1 Minimum Order

Country:

China

Model No:

FOB Price:

(Negotiable) Get Latest Price

Place of Origin:

Price for Minimum Order:

Minimum Order Quantity:

Packaging Detail:

Delivery Time:

Supplying Ability:

Payment Type:

L/C, T/T

Product Group :

Drilling Tools

Product Specification

Brand Name: Tianhe Oil Group
Power Source: Petrol/Gas

Product Description

Kelly is main driver of the whole drill string. It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole. Tianhe Kelly is a long square or hexagonal, precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of drill pipe in the drill string.

Straightness of the Kelly is very crucial in the manufacturing process, thus straightness inspections are carried out before, during and after each machining operation. The flats are precision-milled to API specifications. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high quality drive sections. Each Tianhe Kelly is furnished with a pressed steel thread protectors.

Features and Benefits:

● Manufactured from AISI ***5H-modified, fully heat-treated alloy steel with a Brinell hardness range of ******1BHn and a minimum average Charpy impact value of *0 ft-lbs;

● Ends and drive sections, IDs and connections machined and inspected to API specifications;

● Ultrasonic inspection is performed on all sections;

● Shipped in a protective steel-cased scabbard;

Nominal size ranging from **1/2 to 6;

Specifications - Rotary Kelly

Nom Size (in)	Square kelly Product Code	Hexagonal Kelly Product Code	Top Connection(LH)		Bottom Connection		I.D.(in)		Drive Section(in)
Nom Size (in)	Square kelly Product Code	Hexagonal Kelly Product Code	Standard O.D.(in)	Optional O.D.(in)	Square O.D.(in)	Hex. O.D.(in)	Square	Hex.	A	B
2 1/2	Z********0		6 5/8 REG LH 7 3/4	4 1/2 REG LH 5 3/4	nC6 5.7		1 1/4		3 1/4
3	Z********0	z********0	6 5/8 REG LH 7 3/4	4 1/2 REG LH 5 3/4	nC*1 4 1/8	nC*6 3 3/8	1 3/4	1 1/4	3 3/8	3 3/8
3 1/2	Z********0	z********0	6 5/8 REG LH 7 3/4	4 1/2 REG LH 5 3/4	nC*8 4 3/4	nC*1 4 1/8	2 1/4	1 3/4	4 7/*6	4
4 1/4	Z********0	z********0	6 5/8 REG LH 7 3/4	4 1/2 REG LH 5 3/4	nC*6 6 1/4	nC*8 4 3/4	2 3/6	2 1/4	5 1/2	4 4/5
4 1/4	z********0	z********0	6 5/8 REG LH 7 3/4	4 1/2 REG LH 5 3/4	nC*0 6 3/8	nC*8 4 3/4	2 3/6	2 1/4	5 1/2	4 4/5
5 1/4	Z********0	z********0	6 5/8 REG LH 7 3/4		5 1/2 FH 7	nC*6 6 1/4	3 1/4	3	6 3/4	5 9/2
5 1/4	z********0	z********0	6 5/8 REG LH 7 3/4		nC*6 7

Country:	China
Model No:	-
FOB Price:	(Negotiable) Get Latest Price
Place of Origin:	-
Price for Minimum Order:	-
Minimum Order Quantity:	1
Packaging Detail:	-
Delivery Time:	-
Supplying Ability:	-
Payment Type:	L/C, T/T
Product Group :	Drilling Tools