Prevention of depressurization of threaded tool joint of the drill string during rotor drilling in the deviated hole

The paper deals with the problems that prevent failures with the drilling tool during well drilling with an extreme profile, for example, on the fields of hydrocarbons in the shelf zone. Problems of depressurization of threaded tool joints in BHA drill string bottom in the deviated hole are considered. The results of calculations of maximum permissible radius of HWDP axis deviation of heavy-weight drill pipes of different standard size are given.