Product Categories

ADD: No.35, Tangyan Road, High-Tech Zone, Xi'an, China

Post Code: 710075

TEL: 0086 29 89584808

E-mail: sales@xoosc.com, info@xoosc.com

Heavy Weight Drill Pipe

Heavy Weight Drill Pipe

Standard: API Spec 7-1 Specification: OD 3-1/2", 4-1/2", 5", 5-1/2" Connection:NC38, NC46, NC50, 5 1/2 FH Material: AISI 4145H Alloy Steel and Non-magnetic material Type: Integral and Friction welded

Chat Now
Product Details

Heavy Weight Drill Pipe (HWDP) is developed to provide a gradual transition from the drill collars to the drill pipe. This HWDP helps to prevent stress concentration at the top of the drill collar.It also allow drilling at higher rpms, reducing torque and differential pressure sticking. The HWDP is intended primarily for directional drilling. As it bends easily, it simplifies directional control and minimizes connection fatigue problems common to high-angle or horizontal drilling. The reduced number of pipe failures and increased drill-stem service also make HWDP appropriate for some straight-hole applications. Various combinations of HWDP, drill collars, and standard drill string can be created to meet the challenge of severe drilling conditions.

XOOS can supply integral HWDP from 2-7/8” to 6-5/8”, and friction welded HWDP, which is assembled with AISI 1340 steel pipe and AISI 4145H or 4137H tool joints.

 

The material of integral HWDP is manufactured from one piece of AISI 4145H solid bar, fully heat treated, all physical properties are conform with API Spec 7-1 latest edition. The welding HWDP is assembly by two pieces of tool joints and one piece of central pipe by inertial friction welding. The tool joints are manufactured from AISI 4145H or 4137H alloy steel and the central pipe is manufactured from AISI 1340 alloy steel. The mechanical and chemical property of tool joints and central pipe are conformity to API Spec 7-1 latest edition.

 

Mechanical Properties

ConstructionMaterialYield Strength   Min/Max (ksi)Ultimate   Strength Min/Max (ksi)Elongation(%)Reduction of area   (%)Hardness Min/Max   (Brinell HB)Min. Avg   Charpy
    ft/lbs@+75°F
weldedConnection:   AISI4145H Or 4137H120/-140/-1345285/34041
Pipe:AISI134065/-95/-18-277/-24
IntegralAISI4145H120/-140/-1345285/34041

 

Cold rolled


HWDPs’ thread roots and stress relief features are cold rolled, which is helpful to reduce the fatigue failure of threads by minimizing crack initiation.

 

Heavy Weight Drill Pipe Specification

Nominal Size Length (ft) tubeTool   Jointlb Per footPer Joint(31ft)kgMake-torque (ft-lb) 
IDWall   ThicknessEnd   Upsets (B)Connection   Size and TypeTool  Joint ODTool  Joint ID
2 7/8311 1/20.6882   15/16NC26(2   3/8 IF)3   3/81   1/217.262473,800
3 1/2312  1/160.7193   7/8NC38(3   1/2 IF)4   3/41  1/1625.6537011,500
3 1/2312   1/40.6253   7/8NC38(3   1/2 IF)4   3/4 4 7/82   1/423.4833511,500
4312  9/160.7194  3/16NC40(4   FH)5   1/4 4 7/82  9/1629.9243014,600
4 1/2312   3/40.8754   11/16NC46(4   IF)6   1/42   3/441.4559522,500
531315   1/8NC50(4   1/2 IF)6   5/8350.3871030,000
5 1/2313   1/41.1255   11/165   1/2 FH7   1/43   1/461.6389041,200
6 5/8314   1/21.0636  5/166   5/8 FH84   1/271.43103050,500

 

Spiral Heavy Weight Drill Pipe Specification

 

Nominal Size Length ft TubeTool   Jointlb Per footPer Joint (31ft)kgMake-torque
    (ft-lb)
IDWall   ThicknessEnd   Upset (B)Connection   Size and TypeTool   Joint ODTool   Joint ID
2 7/8311 1/20.6882   15/16NC26(2   3/8 IF)3   3/81 1/218.312613,800
3 1/2312  1/160.7193   7/8NC38(3   1/2 IF)4   3/42  1/1627.1439011,500
3 1/2312   1/40.6253   7/8NC38(3   1/2 IF)4   7/82   1/424.8836011,500
4312  9/160.7194  3/16NC40(4   FH)5   1/42  9/1631.5145514,600
4 1/2312   3/40.8754   11/16NC46(4   IF)6   1/42   3/443.3162122,500
531315   1/8NC50(4   1/2 IF)6   5/8352.3475030,000
5 1/2313   1/41.1255   11/165   1/2 FH7   1/43   1/463.8791541,200
6 5/8314   1/21.0636  5/166   5/8 FH84   1/274.62107050,500

 

Hot Tags: heavy weight drill pipe, China, suppliers, manufacturers, seller, exporter, company, USA, Europe, Malaysia, Singapore, Korea, Brazil, Thailand
Related Products
Inquiry