The profiling of high-precision tool-joint tapered threads is inextricably linked with
technological aspects of their turning. It includes the geometric parameters of the turning …

The process of drilling wells is accompanied by significant environmental pollution. From
time to time, it is proposed to make threaded connectors in drill strings from high-strength …

Drilling wells to produce drinking water and hydrocarbon raw materials requires more
efficient means and methods. Couplings and nipples of drilling connections are made by …

This paper investigates the impact of a CNT-embedded textured tool on the thread-turning
process. The study aims to optimize the efficiency and effectiveness of the thread-turning by …

In this study, the effects of cutting speed and feed rate on the roughness parameters R a, R
z, R sk, R ku, R pk, R vk, and A 2 were examined during machining with coated carbide tools …

High-precision tapered threads are widely used in hard-loaded mechanical joints, especially
in the aggressive environment of the drilling of oil and gas wells. Therefore, they must be …

Most drill-string tool-joint require strong and reliable workpieces and require precision.
Modern manufacturers of tools for turning thread make them with null rake angle, which …

Modern tool manufacturers offer fully profiled cutting cutters with an edge profile identical to
the standard. The situation for large-pitch thread screws is significantly bigger because, for …

Modern manufacturers of tools for turning threads make them with a non-zero value of the
side rake angle of the cutting edge, which significantly increases their efficiency. The value …

High-precision conical threads are widely used in responsible joints in the drilling of oil and
gas wells. Difficult underground drilling conditions due to the occurrence of significant …