Drill string
Heavy Weight Drill Pipe
The transition between drill pipe and collars.
Overview
Heavy weight drill pipe (HWDP) has a thicker wall than standard drill pipe and longer tool joints, often with a central wear pad. It is run between drill pipe and drill collars to smooth the change in stiffness that otherwise concentrates fatigue.
In directional and horizontal wells, HWDP can also provide weight on bit with less contact area and drag than collars.
Key Features
- Thick wall for weight and stiffness
- Long tool joints with hardbanding
- Integral or welded central wear pad
- Spiral designs to reduce differential sticking
Applications
- Transition zone above the bottom-hole assembly
- Weight on bit in directional and horizontal sections
- Reducing string fatigue in high-dogleg wells
Need Heavy Weight Drill Pipe?
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