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API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling

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API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling

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Brand Name :
Model Number :	Square Kelly & Hexagonal Kelly
Certification :	ISO
Price :	USD800-2000/pc
Payment Terms :	T/T, Western Union, MoneyGram
Supply Ability :	500 pcs per month
Delivery Time :	20-30 days

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Product Details
Company Profile

API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling

Kelly is the drive part of whole drill string, it transmits the torsional energy from the rotary table to the bit in the bottom of the hole. Kelly is supported by the swivel through the rotary table and connected to the first joint of drill pipe in the drill string. Kelly has been approved by the API certification. Straightness is the key manufacturing process. Straightness is checked before, during and after each machining operation. Flats are precision-milled to API specifications. All millings are performed on specially designed rigid Kelly mills. Each Kelly is furnished with a pressed steel thread protector. We supply both square kelly and hexagonal kelly.

Product Details:

• Kelly is manufactured strictly according to API Spec7-1 standard. 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.

• The end, drive section and connection of Kelly are machined and inspected according to API standard.

• Ends and drive sections, IDs and connections machined and inspected to API specifications.

• Kelly bars are ultrasonically inspected over full length and section.

• Shipped in a protective steel-cased scabbard.

Specifications:

Size (inch)	Upper Box Connection				Lower Pin Connection				ID(mm)		Driving Section mm
	Type(LH)		OD(mm)		Thread				Four	Six	Cross Flat	For Square Kelly	Cross Corner For Hexa Kelly
	Std	Optional	Std	Optional	Four	OD (mm)	Six	OD (mm)	Four	Six	Cross Flat	For Square Kelly	Cross Corner For Hexa Kelly
2-1/2"	6 5/8 REG	4 1/2REG	196.8	146.0	NC26	85.7			31.8		63.5	83.3
3"	6 5/8 REG	4 1/2REG	196.8	146.0	NC31	104.8	NC26	85.7	44.4	31.8	76.2	100.0	85.7
3-1/2"	6 5/8 REG	4 1/2REG	196.8	146.0	NC38	120.6	NC31	104.8	57.2	44.4	88.9	115.1	100.8
4-1/4"	6 5/8 REG	4 1/2REG	196.8	146.0	NC46	158.8	NC38	120.6	71.4	57.2	108.0	141.3	122.2
4-1/4"	6 5/8 REG	4 1/2REG	196.8	146.0	NC50	161.9	NC40	120.6	71.4	57.2	108.0	141.3	122.2
5-1/4"	6 5/8 REG		196.8		5 1/2FH	177.8	NC46	158.8	82.6	76.2	133.3	175.4	151.6
5-1/4"	6 5/8 REG		196.8		NC56	177.8	NC50	161.9	82.6	82.6	133.3	175.4	151.6
6"	6 5/8 REG		196.8				5 1/2FH	177.8		88.9	152.4		173
6"	6 5/8 REG		196.8				NC56	177.8		88.9	152.4		173

API 7-1 5-1/4′′ Square Or Hexagonal Kelly Drill Pipe For Oilfield Drilling

Any enquiry please contact us by email: christal@oilmancn.com.

Visit our website: www.oilmanchina.com for more products information.

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