Patent ID: 11933111
Assignee: TUBACEX UPSTREAM TECHNOLOGIES S.A.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. Threaded joint for oil and gas pipes, the joint comprising a female part and a male part, wherein a coupling direction between the male part and the female part and a coupling configuration are defined, the male part having a nose, wherein the female part is a joint tubular body comprising a coupling section which internal surface is threaded, an axis of the tubular body having the coupling direction, a seal section which prolongs the coupling section in the coupling direction with a decreasing diameter in the coupling direction, the seal section having an internal sealing surface and a shoulder at an end of the seal section for abutting the nose of the male part in the coupling configuration and wherein the male part comprises a tubular body which comprises a first section which external surface is threaded and which is complementary to the threaded internal surface of the female part, a second sealing section comprising a seal surface which in the coupling configuration cooperates with the seal surface of the female part for sealing the joint, wherein
the internal sealing surface of the female part is made of conical sections;
the seal surface of the male part comprises a proximal portion closer to the first section and a distal portion closer to the end;
the proximal portion having a conical surface which forms, in the coupling configuration, a first seal with one of the conical sections of the internal sealing surface of the female part, the proximal portion and the internal sealing surface having different cone angles;
the distal portion having a convex surface which forms, in the coupling configuration, a second seal with the other conical section of the internal sealing surface of the female part;
such that in the coupling configuration a double seal formed by the first seal and the second seal is established, the first seal being a cone to cone seal that can prevent ingress from external pressure, the second seal being a convex to cone seal.