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Heavy Weight Drill Pipe

Application: Used for connect 2 joints of tubing or casing
Size:Outer Diameter: 2 7/8” – 6 5/8”
Lengths: Range 2 and Range 3
Pipe Standard:API 5CT and 5B PSL1/PSL2 J55,K55,N80-1,N80-Q,API 5CT and 5B L80-1,C90, C95,T95, P110, Q125
End Finishes:Internal Upset, External Upset, Plain End Upset, Non Upset
Tool Joint type:NC38、NC46、NC50、5-1/2 FH

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Product Details

Description

A Heavy Weight Drill Pipe (HWDP) looks like a normal drill pipe except for an upset centered along the tube which helps to prevent excessive buckling.

HWDP is used as a transitional stiffness section, typically between the stiff and rigid drill collars and the relatively light and flexible drill pipe joints to reduce fatigue failures directly above the bottom hole assembly.

Its wall thickness is up to 3 times that of a similar-sized normal drill pipe to add additional weight to the bit.

HWDP is used most commonly in directional drilling because it bends more easily and helps to control torque and fatigue in high-angle operations.

HWDP is manufactured in accordance with API Spec. 7/7-1 guidelines.

Steel Grade:

Integral HWDP : AISI 4145HM

Welded HWDP : AISI 1340 pipe body, AISI 4140HM tool joint

Sizes Range:

Outer Diameter: 2 7/8” – 6 5/8”

Weight Range: 6.27#/FT through 27.72#/FT

Lengths: Range 2 and Range 3

End Finishes: Internal Upset, External Upset, Plain End Upset, Non Upset

Tool Joint type：NC38、NC46、NC50、5-1/2 FH

Specification&Standard

Standard heavy weight drill pipe

Size(in)	O.D. (in)	I.D. (in)	Tool Joint O.D. (in)	Tool Joint I.D. (in)	Connection	Max.elevator diameter (in)	Central upset dia. (in)	Min.drift dia.size(in)
3 1/2	3 1/2	2 1/4	4 3/4 (4 7/8, 5)	2 1/4	NC38	3 7/8	4	2
		2 1/16		2 1/16				113/16
4	4	2 1/2	5 1/4	2 1/2	NC40	4 3/16	4 1/2	2 1/4
		2 9/16		2 9/16				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 (7 1/4, 7 1/2)	3 1/4	5 1/2 FH	5 11/16	6	3
		3 3/8		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 (8 1/4, 8 1/2)	4	65/8 FH	6 15/16	7 1/8	3 3/4
		4 1/2		4 1/2				4 1/4
		5		5				4 3/4

Spiral heavy weight drill pipe

Spiral heavy weight drill pipe
Specification mm	Tube					Joint
Specification mm	ID mm	Elevator upsetmm	elevator groove /Slip outside diametermm	Screw in diametermm	Spiral groove depthmm	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

OCTL Heavy Weight Drill Pipe is manufactured in compliance with API 7-1 and in API RP7G.

Process

Packing

key word : Seamless Steel Pipe

APPLICATION FIELD

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