Helically wound expandable tubular insert
AssigneeWeatherford/Lamb, Inc.
InventorJohn Richard Setterberg JR.
Life of this patent
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Abstract
The present invention provides a connector arrangement for connecting a first tubular to a second tubular. In particular, the present invention relates to a method for connecting tubulars in such a way that the connection is prevented from becoming unmade in response to expansion of the tubulars in a wellbore. More particularly, the present invention provides a tubular connection using a helical or spiral thread insert to seal and maintain mechanical strength in a tubular connection after expansion.
Claims22
An insert for use in connecting two threaded wellbore tubulars end-to-end, the insert comprising:
- a wire thread wherein the inner diameter is engaged with the threads of a first tubular, or the outer diameter is engaged with corresponding mating threads of a second tubular.
A method for connecting two wellbore tubulars end-to-end comprising:
- threading an insert around the external threads of a first tubular prior to joining the first tubular with a second tubular;
- and
- threading the tubulars.
A method for connecting two wellbore tubulars end-to-end comprising:
- threading an insert around the external threads of a first tubular prior to joining the first tubular with a second tubular;
- and
- threading the tubulars.
A method for connecting two wellbore tubulars end-to-end comprising:
- threading an insert into the internal of a first tubular prior to joining the first tubular with a second tubular;
- and
- threading the tubulars.
A method for connecting two wellbore tubulars end-to-end comprising:
- a first tubular having an end with external threads and a second tubular having an end with corresponding internal threads, whereby the external threads of the first tubular and the internal threads of the second tubular form a connection when mated;
- threading an insert around the external threads of the first tubular prior to joining the first tubular with the second tubular;
- and
- threading or mating the tubulars together;
- running the tubulars downhole;
- running an expander tool through a bore of the tubulars;
- and
- expanding the connection.
A method for connecting two wellbore tubulars end-to-end comprising:
- a first tubular having an end with internal threads and a second tubular having an end with corresponding external threads, whereby the internal threads of the first tubular and the external threads of the second tubular form a connection when mated;
- threading an insert around the internal threads of the first tubular prior to joining the first tubular with the second tubular;
- and
- threading or mating the tubulars together;
- running the tubulars downhole;
- running an expander tool through a bore of the tubulars;
- and
- expanding the connection.
An expandable tubular connection consisting of an insert placed between the thread profile of a first tubular and the thread profile of a second tubular prior to make-up.
Dependencies are inferred from the claim text.