Assemblies forming screw connections for hydrocarbon well drilling and operation, and resulting screw connections

摘要

Assembly for forming a screw connection, comprising an axis of rotation (10), respectively, continuously on the same helix of the outer peripheral surface or inner peripheral surface of the tubular component, depending on whether the screw end is male or female At least first (31, 41), second (32, 42) and third (33, 43) continuous thread regions provided are provided at one of their ends (1, 2) for assembly. Comprising first and second tubular components that can sometimes cooperate, wherein at least one of said first, second or third thread regions has a variable width thread profile and is self-locking Yes, when the end portions (1, 2) terminate at free end surfaces (7, 8), respectively, and each of the end portions (1, 2) has no specific adjacent surface and is in a connected state , Sealing surface (61, 62) provided at the corresponding end and sealing interference fit An assembly in which at least one sealing surface (51, 52) is provided between adjacent thread regions for cooperating with each other. [Selection] Figure 1