Heavy Weight Drill Pipe

Model:	-
Brand:	FD
Origin:	Made In China
Category:	Industrial Supplies / Other Industrial Supplies
Label:	square Kelly China
Price:	-
Min. Order:	1000 pc

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Product Description

Heavy weight drill pipe is a medium-weight drill tool similar to drill pipe, whose wall is thicker than that of drill pipe and thinner than that of drill collar. Its tube is connected with special length-added drill pipe joint (integral heavy weight drill pipe is made up of tube and tool joint). Among assemblies, it is generally added between drill pipe and drill collar to prevent sudden changes in cross-section of drill string, and reduce its fatigue. Using it to replace part of the drill collar can reduce torque, improve load, and increase drilling ability during deep well drilling; meanwhile pick-up sub and safety clamp will not be used drilling operation ,which is easy to operate and can save tripping time. It can drill in in high speed under low torque in directional wells and reduces the abrasion and fracture of string without differential pressure and sticking because of the lower steel grade than drill collar, small touching area with the well wall.

square Kelly China: Found Petroleum Equipment

If you are finding high quality and cheap API 7-1 Heavy Weight Drill Pip, you can choose us! We adhere to the principle of good faith cooperation and look forward to working with you as a partner!

CHEMICAL COMPOSITION

Integral heavy weight drill pipe
Size	Outer diameter	Inside diameter	Joint outer diameter	Joint inside diameter	Connecting thread	Slip max. diameter	Upset middle diameter	Min. drift diameter
3 1/2	3 1/2	2 1/4	4 3/4	2 1/4	NC38	3 7/8	4	2
3 1/2	3 1/2	2 1/16	(4 7/8, 5)	2 1/16	NC38	3 7/8	4	1 13/16
4	4	2 1/2	5 1/4	2 1/2	NC40	4 3/16	4 1/2	2 1/4
4	4	2 9/16	5 1/4	2 9/16	NC40	4 3/16	4 1/2	2 5/16
4 1/2	4 1/2	2 11/16	6 1/4	2 11/16	NC46	4 11/16	5	2 7/16
		2 3/4		2 3/4				2 1/2
		2 13/16		2 13/16				2 9/16
5	5	3	6 5/8	3	NC50	5 1/8	5 1/2	2 3/4
5 1/2	5 1/2	3 1/4	7	3 1/4	5 1/2 FH	5 11/16	6	3
		3 3/8	(7 1/4, 7 1/2)	3 3/8				3 1/8
		3 7/8		3 7/8				3 5/8
		4		4				3 3/4
6 5/8	6 5/8	4	8	4	6 5/8 FH	6 15/16	7 1/8	3 3/4
		4 1/2	(8 1/4, 8 1/2)	4 1/2				4 1/4
		5		5				4 3/4

Spiral heavy weight drill pipe
Specification mm	Tube					Joint
Specification mm	ID mm	Elevator upset mm	elevator groove /Slip outside diameter mm	Screw in diameter mm	Spiral groove depth mm	Thread Type	OD mm	ID mm
88.9(3 1/2)	54	92.1	88.9	101.6	9.5	NC38	120.6	54
114.3(4 1/2)	69.8	117.5	114.3	127	12.7	NC46	158.8	69.8
127.0(5)	76.2	130.2	127	139.7	12.7	NC50	165.1	76.2