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US 7,017,950 B2Granted
Expandable connection
AssigneeWeatherford/Lamb, Inc.
InventorIain Cameron Macaulay
Life of this patent
Estimating the term…
Abstract
An expandable tubular coupling comprises a threaded male portion and a corresponding threaded female portion, wherein the thread portions feature thread profiles configured such that the coupling may be made up to a predetermined extent, and once made up to the predetermined extent be made up no further. In a disclosed embodiment the thread profiles are a combination of a square thread profile and dovetail thread profile.
Claims6
An expandable tubular coupling comprising:
- a threaded male portion;
- and
- a corresponding threaded female portion,
- the threaded portions featuring thread profiles configured such that the coupling may be made up to a predetermined extent, and once made up to said predetermined extent may be made up no further, each threaded portion comprising:
- a first part having a first thread profile, and
- a second part having a second thread profile, the first thread profile having a different shape than the second thread profile, wherein the thread profiles are a combination of a square thread profile and a dovetail thread profile.
3 more elements
An expandable tubular coupling comprising:
- a threaded male portion;
- and
- a corresponding threaded female portion,
- the threaded portions featuring thread profiles configured such that the coupling may be made up to a predetermined extent, and once made up to said predetermined extent may be made up no further, wherein:
- the thread profiles am a combination of a square thread profile and a dovetail thread profile;
- the square profile is provided on a trailing part of the female portion and the dovetail profile is provided on a leading part of the female portion;
- and
- a dovetail profile on a trailing part of the male portion is configured so as not to mate with the square profile on the trailing part of the female portion.
5 more elements
Dependencies are inferred from the claim text.