Bohrrohren

Bohrrohren is a term that can refer to drill tubes used in borehole drilling. In this sense, Bohrrohren are hollow cylindrical components that form part of the drill string, transmitting rotational torque from surface equipment to the drill bit while also providing a conduit for drilling mud and the removal of rock cuttings.

Construction and standards

Bohrrohren are typically made of steel or alloy materials chosen for strength, toughness, and corrosion resistance. They are designed in standardized lengths, commonly several meters, and are connected by threaded or other mechanical connections to form a continuous drill string. The hollow interior allows circulating drilling fluid to return to the surface, helping to cool the bit, remove cuttings, and stabilize the borehole. Various standards govern dimensions, threads, and performance, reflecting the needs of oil, gas, mining, and geothermal applications.

Functions and applications

The primary function of Bohrrohren is to enable drilling operations by maintaining a clear path for the drill bit, transmitting torque, and supporting pressure management within the borehole. They are used across industries such as oil and natural gas exploration, mining, geothermal energy extraction, and geotechnical investigations. In practice, Bohrrohren are complemented by drill collars, casings, and other components to manage loads, prevent hole collapse, and protect downhole tools.

Etymology and context

The name derives from the German words for drilling (Bohr) and tube or pipe (RohR/Rohr). In many contexts, the term is synonymous with drill pipe or drill string components, though terminology varies by region and standardization body.

See also: drill pipe, drill string, casing, downhole equipment.