API 7-1 Square or Hexagonal Kelly for Oilfield Drilling

• After-sales Service: Support
• Warranty: Support
• Certification: CE, RoHS, ISO 9001:2000, ISO 9001:2008
• Power Source: Electric
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Crude Oil
• Structure: Vertical
• Material: Cast Steel
• Type: Square and Hexagon Kelly
• Color: Red/Bule/Customize
• Delivery Date: 7-30 Days
• Shipping Method: by Sea, Express, by Air
• Transport Package: Standard Export Packaging
• Specification: Standard
• Trademark: YCTP
• Origin: China
• HS Code: 84314310
• Production Capacity: 500 Sets Per Month

Product Description

API 7-1 Square Or Hexagonal Kelly for Oilfield Drilling

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.

Product Parameters

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

 

Size		Length in	Upper box connection				Lower pin connection		I.D.	Driving section
mm	in		Type(LH)		O.D.		Thread	O.D.		Cross flat	For square kelly	Cross corner for hexa kelly
			Std	optional	Std	optional
63.5	2 1/2	12.19	6 5/8REG	4 1/2REG	196.8	146.0	NC26	85.7	31.8	63.5	83.3
76.2	3	12.19	6 5/8REG	4 1/2REG	196.8	146.0	NC31	104.8	44.4	76.2	100.0	85.7
88.9	3 1/2	12.19	6 5/8REG	4 1/2REG	196.8	146.0	NC38	120.6	57.2	88.9	115.1	100.8
108.0	4 1/4	12.9	6 5/8REG	4 1/2REG	196.8	146.0	NC46	158.8	71.4	108.0	141.3	122.2
			6 5/8REG	4 1/2REG	196.8	146.0	NC50	161.9	71.4	108.0	141.3	122.2
133.4	5 1/4	12.9	6 5/8REG		196.8		5 1/2FH	177.8	82.6	133.3	175.4	151.6
			6 5/8REG		196.8		NC56	177.8	82.6	133.3	175.4	151.6

Company Profile

We shandong yacheng petroleum technology are established in 2003 year, located in Dongying city, shengli oilfield,which is  second largest oilfield of China. 

Our business scope includes oilfield equipment supply, such as, drilling equipment and spares, wellhead equipment ,oil recovery equipment. 
We have been served Sinopec -Shengli oilfield in the last 19 years, established a solid partnership and network with quality OEM factories. 
Based on our responsive and responsible  engineering & commercial team, we can provide one-stop shop service to our customer, and package plan of procurement which brings added value in terms of delivery time, fair prices, inventory in stock. 
We are Looking forward to build up partnership with your company and provide our attentive service to you.

Certifications

Packaging & Shipping

FAQ

1) About Packing Inner packing: white box, color boxes (upon request), Outer packing: cartons or pallets
2) Terms of payment: We accept T/T,L/C
3)Terms of Shipment: About 30 days after receiving the advance payment,or according to both parties agreement
4)Ports of shipment: Tianjin,Qingdao, shanghai or other required Port, by sea or air
5)Guarantee: One year since delivery.
6)Inspection: 100% testing before delivery.