What is a S-135 drill pipe used for?

S-135 Drill pipes are essential and versatile tools for drilling and natural resource exploration. They are critical across many industries, from deep well drilling in the oil and gas industry to mineral extraction and geothermal development. Despite their importance, drill pipes are frequently underappreciated in discussions about essential oilfield equipment.

Steel drill pipe is a seamless tube by cold drawn manufactured to endure the rugged and challenging conditions encountered in drilling operations. This seamless design process guarantees longevity, minimizing the risk of weak points that might undermine the pipe’s structural integrity. They come in a variety of sizes, strengths, and wall thicknesses.

A drill pipe has two main functions:

Torque Transmission: Drill pipes are designed to transfer drilling torque over long distances, often spanning several miles, from the drilling rig’s surface down to the drill bit.
Fluid Circulation: A drill pipe serves as a conduit for drilling fluid, also known as ‘drilling mud’, allowing it to flow down from the surface and back up the wellbore. Drilling fluid is crucial for cooling the drill bit, carrying cuttings to the surface, and maintaining pressure in the well.

Given the substantial depths reached in drilling operations, which can extend up to nearly 15,000 feet, connecting different drill pipe sections is necessary. This connection process typically involves welding together threaded tool joints, including the box tool joint and the pin tool joint, to create a continuous length of drill pipe.

Types of drilling pipes

Drill pipes vary, tailored to specific drilling needs. Common types include regular drilling pipes and heavyweight drill pipes, with spiral pipes for enhanced torque transmission and speciality pipes for directional and horizontal drilling.