The main purpose of drill pipe is to transport drilling mud to the drill bit and to raise, lower or rotate the bottom hole device together with the drill bit. Drill pipe must be able to withstand tremendous internal and external pressure, twisting, bending and vibration. In the process of oil and gas extraction and refining, drill pipe can be used multiple times.
Drill pipe is divided into three categories: kelly, drill pipe and weighted drill pipe. The connection sequence is kelly + drill pipe + weighted drill pipe.
Products: Drill Pipe, Heavy Weight Drill Pipe, Drill Collar
Size: 2-3/8"--6-5/8"
Standard: API 5DP
Grade: E75, G105, S135, SS-105, X95, X57, X75, X39
Length: Range 1, Range 2, Range 3
| Drill pipe diameter | Drill pipe ID | Drill pipe weight |
| 2-3/8 inch | 1.815 inch | 6.65 lb/ft |
| 2-7/8 inch | 2.151 inch | 10.40 lb/ft |
| 3-1/2 inch | 2.764 inch, 2.602 inch | 13.30 lb/ft, 15.50 lb/ft |
| 4 inch | 3.340 inch, 3.240 inch | 14.00 lb/ft, 15.70 lb/ft |
| 4-1/2 inch | 3.826 inch, 3.640 inch | 16.60 lb/ft, 20 lb/ft |
| 5 inch | 4.726 inch, 4.000 inch | 19.50 lb/ft, 25.60 lb/ft |
| 5-1/2 inch | 4.778 inch, 4.670 inch | 21.90 lb/ft, 24.70 lb/ft |
| 6-5/8 inch | 5.965 inch, 5.901 inch | 25.20 lb/ft, 27.70 lb/ft |
