The definition of heavy weight drill pipe
Heavy weight drill pipe (HWDP) is a type of drill pipe used in the oil and gas industry, particularly during the drilling of wells. It is designed to handle the stresses and strains associated with drilling operations. Heavy weight drill pipe is the most common drill pipe used in the vertical section of the hole, providing weight to the drill bit for directional drilling while maintaining greater flexibility than drill collars. Heavy weight is also knows as hevi-wate or HWDP in the industry.
Heavy weight drill pipe specifications
4" Heavy weight drill pipe with 4" Full Hole (FH) (NC-40) Connection (5 1/4" OD)
4" Heavy weight drill pipe with 4" Double Shoulder (DS-38)Connection (5" OD)
4" Heavy weight drill pipe with a 4" XT-39 premium connection (4 7/8" OD)
4 1/2" Heavy weight drill pipe with 4 1/2" Extra Hole (XH) (NC-46) Connection (6 1/4" OD)
5" Heavy weight drill pipe with 5" Extra Hole (XH) (4 1/2" IF NC-50) Connection (6 1/2" OD)
Advantages of heavy weight drill pipe
Heavy-weight drill pipe absorbs the stresses transferred from the stiff Drill Collars to the relatively flexible Drill Pipe.
1. Increased wall thickness
2. Longer tool joints
3. It uses more hard-facing
4. It may have a long central upset section
5. It allows high-speed drilling with less torque, which reduces wear on the drill rod and simplifies directional control
6. Since the HWDP operates in the same way as a normal DP, the drill pipe can be tripped faster than a drill collar
7. There is no loss of BOP control when handling HWDP since pipe rams can be used around it.
Heavy Weight Drill Pipe Applications
1. Reduce drilling costs by eliminating drill pipe failures in the transition zone (also check drilling cost per foot).
2. Significantly increases the performance of small rigs through the ease of handling
Comclusion
Heavy weight drill pipes are essential in complex drilling environments, offering the necessary mechanical strength, flexibility, and durability for safe and efficient drilling. Their application spans various challenging drilling scenarios, from deepwater drilling to high-pressure, high-temperature wells.
Read more: How to Use Drill Pipe and Precautions
