Research of the material of the drilling rig flush pipe and the causes of wear of its outer surface

The causes of wear of the outer surface of the flush pipe of the rotating part of the top drive of the drilling rig and ways to reduce its wear are considered. It is established, that the cause of wear is the contact of the pipe with polymer lip seals, as a result of which the pipe is exposed to chemical action and abrasive wear. At a drive rotation speed of 80 min–1, a pressure of 15 MPa is created and the temperature in the contact zone increases. Keywords drilling operations, top drive, swivel, flush pipe, rotary joint, alloyed [email protected], [email protected], [email protected], [email protected]