API 7-1 5-1/4′′ Square or Hexagonal Kelly for Oilfield Drilling

• Manufacturing Process: Forging
• Surface Treatment: Galvanized
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Warranty: 1 Year
• Application: Oilfield
• Model NO.: 5-1/4′′
• Colour: Customer Requirement
• Transport Package: Container
• Specification: 3′′, 3 1/2′′, 4′′, 4 1/2′′, 5′′
• Trademark: UPET
• Origin: China
• HS Code: 73061900
• Production Capacity: 200000 PCS/Year

Product Description

Quick Details
Applicable Industries:Energy & Mining
Place of Origin:Shandong, China
Type:Kelly
Machine Type:Drilling Tool
Certification:API
Material:AISI4145H
Processing Type:Casting
Use:Well Drilling
length:40FT

Supply Ability
Supply Ability:10000 Ton/Tons per Year

Packaging & Delivery
Packaging Details:Shipped in a protective steel -cased scabbard
Port:Qingdao
Lead Time :

Quantity(Pieces)	1 - 50	>50
Est. Time(days)	30	To be negotiated

                                                     

 

Product Description

Kelly is the 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. 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 inspection are carried out before, during and after each machining operation. The flats are precision-milled to API specification.All milling processes are performed on specially designed rigid kelly mills to ensure tight tolerances and high quality drive section.Each kelly is furnished with a pressed steel thread protectors.

Features and Benefits

 Manufactured from AISI4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHN and a minimum average Charpy impact value of 40ft-Ibs;

Ends and drive section,IDs and connections machined and inspected to API specification;

Ultrasonic inspection is performed on all 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 connection

Technical specification and parameters

Introduction:
Our company may act according to the user the request to produce Kelly and hexagonal Kelly, the length usually is 12.19 meters, uses AISI 4145H alloy structural steel manufacturing, and carries on the quenching and tempering treatment in the full length scope. The technique of production and the technical standard are completely in accordance with API, after heat treatment, apart from surface inch under to sampling under the room temperature to test its Brinell hardness to be possible to achieve reaches 285-341, minimum Charpy impact value is 54J.

 

STANDARD SIZE FOR SQUARE KELLY
Size (in)	Length (ft) Top upset joint				Bottom upset		Bore	Drive Section		Weight
	A	B	LH	OD C (in)	RH	OD (in)	E (in)	F (in)	G (in)	(Ib)
2 1/2	40	37	6 5/8" Reg	7 3/4	2 3/8 IF	3 3/8	1 1/4	3 1/4	2 1/2	902
	46	43	6 5/8" Reg	7 3/4	2 3/8 IF	3 3/8	1 1/4	3 1/4	2 1/2	1023
3	40	37	6 5/8" Reg	Apr-73	2 7/8IF	4 1/8	1 3/4	3 7/8	3	1089
	46	43	6 5/8" Reg	7 3/4	2 7/8IF	4 1/8	1 3/4	3 7/8	3	1232
3 1/2	40	37	6 5/8" Reg	7 3/4	3 1/21F	4 3/4	2 1/4	4  7/16	3 1/2	1320
	46	43	6 5/8" Reg	7 3/4	3 1/21F	4 3/4	2 1/4	4  7/16	3 1/2	1474
	54	51	6 5/8" Reg	7 3/4	3 1/21F	4 3/4	2 1/4	4  7/16	3 1/2	1716
4 1/4	40	37	6 5/8" Reg	7 3/4	4 IF	6	2 13/16	5 1/2	4 1/4	1815
	46	43	6 5/8" Reg	7 3/4	4 IF	6	2 13/16	5 1/2	4 1/4	2068
	54	51	6 5/8" Reg	7 3/4	4 IF	6	2 13/16	5 1/2	4 1/4	2354
5 1/4	40	37	6 5/8" Reg	7 3/4	NC50	7	3 1/4	6 7/8	5 1/4	2750
	46	43	6 5/8" Reg	7 3/4	NC50	7	3 1/4	6 7/8	5 1/4	3146
	54	51	6 5/8" Reg	7 3/4	NC50	7	3 1/4	6 7/8	5 1/4	3674
6	40	37	6 5/8" Reg	7 3/4	6 5/8 FH	8	3 1/2	7 5/8	6	3674
	46	43	6 5/8" Reg	7 3/4	6 5/8 FH	8	3 1/2	7 5/8 6	6	4224
	54	51	6 5/8" Reg	7 3/4	6 5/8 FH	8	3 1/2	7 5/8	6	4950

 

STANDARD SIZE FOR HEX KELLY
Size	Length (ft)		Top upset joint		Bottom upset		Bore	Drive Section		Weight
(in)	A	B	LH	OD C (in)	RH	OD (in)	E (in)	F (in)	G (in)	(lb)
3	40	37	6 5/8" Reg	7 3/4	2 3/8IF	3 3/8	1 1/2	3 3/8	3	990
	46	43	6 5/8" Reg	7 3/4	2 3/8IF	3 3/8	1 1/2	3 3/8	3	1100
3 1/2	40	37	6 5/8" Reg	7 3/4	2 7/8IF	4 1/8	1 3/4	4 15/16	3 1/2	1276
	46	43	6 5/8" Reg	7 3/4	2 7/8IF	4 1/8	1 3/4	4 15/16	3 1/2	1474
	54	51	6 5/8" Reg	7 3/4	2 7/8IF	4 1/8	1 3/4	4 15/16	3 1/2	1716
4 1/4	40	37	6 5/8" Reg	7 3/4	3 1/21F	4 3/4	2 1/4	4 25/32	4 1/4	1650
	46	43	6 5/8" Reg	7 3/4	3 1/21F	4 3/4	2 1/4	4 25/32	4 1/4	1848
	54	51	6 5/8" Reg	7 3/4	3 1/21F	4 3/4	2 1/4	4 25/32	4 1/4	2156
5 1/4	40	37	6 5/8" Reg	7 3/4	4 IF	6	213/16	5 29/32	5 1/4	2244
	46	43	6 5/8" Reg	7 3/4	4 IF	6	2 13/16	5 29/32	5 1/4	2574
	54	51	6 5/8" Reg	7 3/4	4 IF	6	2 13/16	5 29/32	5 1/4	2970
6	40	37	6 5/8" Reg	7 3/4	4 1/2IF	7	3 1/2	6 13/16	6	2904
	46	43	6 5/8" Reg	7 3/4	4 1/2IF	7	3 1/2	6 13/16	6	3300
	54	51	6 5/8" Reg	7 3/4	4 1/21F	7	3 1/2	6 13/16	6	3894

 
 

KELLY COCK
OD: 4 3/4, 5 5/16, 6 5/8, 7, 7 1/4, 7 3/4, 8 inch. The body is made of a single piece of forged AISI 4145 H modified alloy steel, full treated to 285-341 Brinell Hardness and 40 ft-lb

 

Detailed Photos

 

Company Information
UPET OILFIELD EQUIPMENTS CO.,LTD is one of the most well-known suppliers for the oilfield equipments in China, was established in 2000, and now has grown up to a star company which is not big but very strong in this field with our persistant effort step by step in the past years.Our products refer to the whole areas of oilfields, from a very small spare part to a very big complete rig system. Our main products are: pump spare parts, mud pumps&packages, DC/AC Motors, solid control equipments, power units, truck-mounted rigs, workover rigs, land rigs, drilling pipes and drilling tools etc. All of our products are manufactured according to the API Standard, and we are authorized to use API monogram.
Our products have been exported to 15 countries& areas around the world, 80% of our exsisting customers have done the business with us by more than 5 times, no one-off customer. We will continue to expand our range, and win more customers' trust with our better and better performance.
We welcome the win-win cooperation relationship with the partners from any places in the world, each customer is our god and helper. Warmly welcome you to come to China and visit us!
With us, you will save money, time, trouble, and most important point is that you can sleep better.