Modern drilling requires more efficient activities (faster drilling speed, higher drilling quality, suitability for special drilling environments, and safer drilling). As the main drilling tool, the performance and quality of the drill pipe is pivotal to drilling ability, efficiency, quality, and drilling safety.

Hilong is committed to technological innovation when it comes to drill pipes. We constantly design and develop high-end drill pipe products to meet the requirements of modern efficient drilling. With exceptional quality and excellent product performance, we are committed to meeting the needs of demanding clients and modern drilling projects.

Hilong Drill Pipe Quality & Performance

• Excellent steel purity, metallurgical quality, microstructure uniformity, impact toughness and fatigue resistance
• Optimized Miu and Miu-R designs, combined with a special stable upsetting process, which improves the fatigue resistance on the upsetting end of the drill pipe
• Using MES and ERP systems, we realize comprehensive information management of the entire process from order-to-shipment, including the entire manufacturing process, inspection and test acceptance, and product traceability.

Drill Pipe Design

Drill Pipe Product Range

Main drill pipe specifications (outer diameter):

2 3/8" • 2 7/8" • 3 1/2" • 4" • 4 1/2" • 5" • 5 1/2" • 5 7/8" • 6 5/8" • 7 5/8" • 8 5/8"

(For more details, view/download our DRILLING TOOLS BROCHURE.)

Drill Pipe Product Standards

Optimized Miu and Miu-R designs, combined with a special stable upsetting process, provides improved fatigue resistance on the upsetting end of the drill pipe.

Drill Pipe Product Types

• Standard drill pipe (API Spec 5DP/NS-1/DS-1 standard drill pipe)
• Hilong proprietary drill pipe:
1. Hilong Premium Connection Drill Pipe
2. Hilong Super High-Strength Drill Pipe
3. Hilong Sour Service Drill Pipe & Heavyweight Drill Pipe
4. Hilong Non-Slip-Crush Drill Pipe
5. Hilong Slip-Protected Drill Pipe
6. Hilong Fush Hole Drill Pipe
7. Hilong Double-Walled Drill Pipe
8. Hilong Arctic Service Drill Pipe
9. Hilong Landing String Drill Pipe
10. Hilong Large Size HDD (Horizontal Directional Drilling) Drill Pipe
11. Hilong Slim Drill Pipe

Hilong Special Drill Pipe Material/Steel Grades

• Hilong Sour Service Drill Pipe Grade

Usage: Applicable for sulfur-containing and high-sulfur drilling environments
Steel Grades: HLDT-SS®75, HLDT-SS®95, HLDT-SS®105, HLDT-SS®110, HLDT-S®120, HLDT-S®125

Please refer to Table A2 or Table B2 in our viewable/downloadable DRILLING TOOLS BROCHURE for a list of recommended sizes for Hilong Anti-Sulfur Drill Pipe.

Hilong Super High-Strength Drill Pipe

Usage: Suitable for deep wells, extra-deep wells, and extended reach wells, with high strength, high toughness, and high fatigue resistance

Steel grade: HLDT-SH®Z140, HLDT-SH®V150, HLDT-SH®U165

Hilong Arctic Service Drill Pipe

Usage: Low-temperature environment

Steel grades: HLDT-AS®75, HLDT-AS®95, HLDT-AS®105, HLDT-AS®135