Drill Pipe
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Oil country tubular goods
PRODUCT DESCRIPTION
Description
Drill pipes are long tubular sections of pipe that make up the majority of the drill string. They are typically a 31 foot long section of tubular pipe but may be anywhere from 18 to 45 feet in length.
Heavy weight drill pipe (HWDP) is a tubular pipe that adds weight or acts as a transitional piece in the drill string. As a transitional section of the drill string, it is placed between the drill collar and standard drill pipe to reduce fatigue failures. In other applications the HWDP is used as an additional weight to weigh down the drill string.
Heavy weight drill pipe is a medium-weight drilling pipe, (referred standards in API SPEC 7-1). It has bigger wall thickness than common drilling pipe and smaller than drill collar.
Drill collars are a component of the drill string that makes up part of the BHA. They are thicker-walled, heavier, and more rigid than drill pipes and are primarily used to weigh down the drill bit while dampening vibration and impact forces.
Drill Pipe:2-3/8" to 7-5/8" OD, Range 2 and 3
Heavy Weight pipe:2-3/8" to 6-5/8" OD, Range 2 and 3
Drill Collars:2-7/8" to 14"
Grades: E75, X95, G105, S135
Connection threads:NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH.
Internal Upset: IU, EU, IEU
Specification
| Size designation | Calculated weight | Tool joint designation | Calculated weight | grade | Wall thickness | Upset ends | ||
| in | 1b/ft | Kg/m | in | mm | ||||
| 2 3/8 | 6.65 | NC26 | 6.26 | 9.32 | E.X.G.S | 0.28 | 7.11 | EU |
| 2 7/8 | 10.4 | NC31 | 9.72 | 14.48 | E.X.G.S | 0.362 | 9.19 | EU |
| 3 1/2 | 13.3 | NC38 | 12.31 | 18.34 | E.X.G.S | 0.368 | 9.35 | EU |
PACKING AND DELIVERY
Packing and delivery
The company has rich experience and excellent reputation in the steel industry, and is committed to providing the best quality and applicable steel products to customers around the world. It is a large rebar production base in China. The main products include rebar, medium and thick plates, hot-rolled plates, cold-rolled plates, galvanized plates, color-coated plates, round steel, section steel, special-shaped steel, wire rod, rails, etc.
FACTORY APPEARANCE
A one-stop provider of high-quality steel solutions, with rich experience and excellent reputation in the steel industry, committed to providing the highest quality and most suitable steel products to customers around the world, and is a large rebar production base in China.
APPLICATION AREAS
The products are widely used in key projects at home and abroad, such as Beijing Daxing International Airport, South-to-North Water Diversion Project, Shijiazhuang Metro System, Xiongan Citizen Service Center, Brunei Sea Bridge, Pakistan Nuclear Power Plant, etc.
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