US 11,028,948 B2 · Tubular coupling

Abstract

A tubular connection includes an inner body having a bore, external threads defining external thread surfaces, a torque nose, and a radially-facing sealing surface, and an outer body having a bore in communication with the bore of the inner body, internal threads defining internal thread surfaces and being configured to engage the external threads of the inner body, a torque-stop surface that engages the torque nose, and a radially-facing sealing surface that forms a seal with the radially-facing sealing surface of the inner body. The external threads define a first radius between two of the external thread surfaces, the internal threads define a second radius between two of the internal thread surfaces, the external threads where the first radius is defined being configured to engage the internal threads where the second radius is defined, the first and second radii being mismatched.

Claims26

Dependent claims

A tubular connection, comprising:

an inner body comprising a bore, external threads defining external thread surfaces, a torque nose, and a radially-facing sealing surface;
and
an outer body comprising a bore in communication with the bore of the inner body, internal threads defining internal thread surfaces and being configured to engage the external threads of the inner body, a torque-stop surface that engages the torque nose, and a radially-facing sealing surface that forms a seal with the radially-facing sealing surface of the inner body,
wherein the external threads define a first radius between two of the external thread surfaces, the internal threads define a second radius between two of the internal thread surfaces, the external threads where the first radius is defined being configured to engage the internal threads where the second radius is defined, the first and second radii being mismatched.

1 more element

A coupler for connecting together a first tubular and a second tubular, the coupler comprising:

a body having a first axial side and a second axial side;
a first connector configured to connect to the first tubular, the first connector extending from the first axial side, the first connector defining a radially-facing sealing surface;
and
a second connector configured to connect to the second tubular, the second connector extending from the second axial side, the second connector defining a radially-facing sealing surface, and the first and second connectors being in fluid communication with one another through the body,
wherein the first connector comprises internal threads defining internal thread surfaces and being configured to engage external threads on the first tubular, the external threads defining external thread surfaces, and wherein the internal and external threads each have a ratio of thread height to pitch of between about 0.10 and about 0.20, and
wherein the external threads define a first radius between two of the external thread surfaces, the internal threads define a second radius between two of the internal thread surfaces thereof, the external threads where the first radius is defined being configured to engage the internal threads where the second radius is defined, wherein the first and second radii are mismatched.

3 more elements

Dependencies are inferred from the claim text.

Tubular coupling

Life of this patent

Tubular coupling

Life of this patent

Abstract

Claims26