Drill rod sizes

Drill rods are essential tools in the mining and drilling industry, connecting the drill bit to the drilling machine. They come in various sizes and specifications to suit different drilling applications. The drill rod size chart is a visual representation of the dimensions and characteristics of each drill rod size, aiding in selecting the appropriate drill rod for a specific drilling project. The chart typically includes information about the outer diameter, inner diameter, wall thickness, and length of the drill rods. Drill rod size charts vary depending on the type of drilling, such as exploration drilling, core drilling, or water well drilling, and the specific requirements of the industry, ensuring compatibility between the drill rod and the drilling equipment.

Exploration Drilling Rods

Exploration drilling is a crucial process in the mining and geotechnical industries to determine the location and quality of mineral deposits or the composition of the subsurface. Selecting the right drill rod sizes is essential for the success of the operation. Common sizes for exploration drilling include NQ, HQ, and PQ, with each size indicating the outer diameter of the drill rod. For instance, the NQ drill rod size is approximately 75.7 mm in outer diameter, while the HQ is around 96 mm. The choice of size depends on factors such as the drilling rig's capacity, the desired depth of the borehole, and the specific requirements of the exploration project.

Core Drilling Rods

Core drilling is used to extract cylindrical rock or soil samples from the subsurface, providing valuable information about the geology and mineral composition of an area. Core drill rods are designed to retrieve intact core samples and come in standard sizes to fit core barrel systems. These sizes are typically denoted by letters, such as B, N, H, and P, with increasing diameters indicating larger core sample diameters. For example, the B size drill rod is commonly used for obtaining small-diameter core samples, while the larger sizes, such as the N and H sizes, are suitable for wider core diameters. The diamond drill rod size chart provides detailed information on the dimensions of diamond drill rods, including the outer diameter, inner diameter, and thread size, ensuring compatibility with core drilling equipment.

Water Well Drilling Rods

Water well drilling is the process of creating a borehole to access groundwater for various applications, including domestic, agricultural, and industrial use. Water well drill rods are designed to withstand the rigors of drilling through different types of geological formations and are available in varying sizes to accommodate the specific needs of a water well project. Common drill rod thread sizes in water well drilling include API REG, API IF, BECO, and other proprietary connections. The choice of thread size depends on factors such as the drilling rig's compatibility, the expected depth of the water well, and the casing design used for well completion.