Tubing anchor
AssigneeWeatherford/Lamb, Inc.
InventorsNeil Andrew Abercrombie Simpson, Alexander Craig MacKay, Graham MacKay, Duncan James Trinder
Life of this patent
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Abstract
A method of anchoring tubing in a bore comprising: providing tubing having a section with outer surface portions defining a tubing profile, and configured to describe an outer diameter less than a first diameter. The tubing is located within a bore having an internal diameter equal to the first diameter and defining a bore profile. The tubing is then reconfigured such that the tubing profile engages with the bore profile, anchoring the tubing within the bore.
Claims96
A method of anchoring tubing in a bore, the bore having an internal first diameter, and defining a bore profile, the method comprising:
- providing tubing having a section with outer surface portions defining a tubing profile, the outer surface portions configured to describe an outer diameter greater than the first diameter;
- and
- axially translating the tubing relative to the bore to locate the tubing within the bore such that the tubing profile engages with the bore profile.
A method of anchoring tubing in a bore, the method comprising:
- providing tubing having a section having outer surface portions defining a tubing profile, the outer surface portions configured to describe an outer diameter less than a first diameter;
- locating the tubing within a bore having an internal diameter equal to the first diameter, and defining a bore profile;
- and
- reconfiguring the tubing section such that the tubing profile engages with the bore profile.
Apparatus for use in anchoring tubing in a section of a bore of internal diameter equal to a first diameter, the bore defining a bore profile, the apparatus comprising:
- tubing including a section with a non-circular wall, the wall having an outer surface portion, part of the outer surface portion defining a tubing profile, the wall configured such that the outer surface portion describes an outer diameter greater than the first diameter;
- and
- means for engaging a running tool for running the tubing into the bore and then locating the tubing section in the bore.
Apparatus for use in anchoring tubing in a section of a bore of internal diameter equal to a first diameter, the bore defining a bore profile, the apparatus comprising:
- tubing including a section with a non-circular wall, the wall having an outer surface portion, part of the outer surface portion defining a tubing profile, the wall configured such that the outer surface portion describes an outer diameter less than the first diameter;
- means for engaging a running tool for running the tubing into the bore and then locating the tubing section in the bore;
- and
- a first expander for diametrically expanding the tubing section wall such that the tubing profile engages with the bore profile.
Expandable downhole tubing including a tubing section with a non-circular wall, the wall having an outer surface portion, part of the outer surface portion defining a tubing profile, the wall configured such that the outer surface portion describes a running-in diameter less than a pre-determined first diameter, the tubing section being diametrically expandable such that said outer surface portion describes a diameter at least as large as said first diameter.
Downhole tubing including a tubing section with a non-circular wall, the wall having an outer surface portion, defining a tubing profile adapted for engaging a bore profile.
A method of forming tubing having a section configured to provide outer surface portions describing an outer diameter less than a selected first diameter, comprising:
- providing circular section tubing having an outer surface, part of the outer surface defining a profile, the tubing having an outer diameter at least as large as the first diameter;
- reconfiguring portions of the initially circular tubing section to a generally planar form such that the tubing is then substantially polygonal, and then
- further reconfiguring the planar tubing section portions to form convex tubing portions, located between outer surface portions.
A method of forming tubing having a section configured to provide an outer surface portion describing an outer diameter less than a selected first diameter, comprising:
- providing circular section tubing having an outer surface, part of the outer surface defining a profile, the tubing having an outer diameter at least as large as the first diameter, and
- forming at least one axially extending indent in the tubing section to create at least one convex tubing portion such that the tubing defines an outer diameter less than said first diameter.
A method of anchoring tubing in a bore, the method comprising:
- providing tubing having at least a section having outer surface portions, part of the outer surface portions defining a profile, the section configured such that the outer surface portions describe an outer diameter less than a first diameter;
- locating the tubing within a bore having an internal surface, part of the internal surface defining a profile, the bore having an internal diameter corresponding to said first diameter;
- and
- reconfiguring said section such that said outer surface portions are biased to describe an outer diameter greater than said first diameter but are restrained to said first diameter by said bore, and such that said tubing profile engages the bore profile.
A method of anchoring tubing in a bore, the method comprising:
- providing tubing having a section describing an outer diameter greater than a first diameter;
- and
- locating the tubing within a section of a bore having at least one inner surface portion describing an internal diameter corresponding to the first diameter such that the inner surface portion is extended beyond the first diameter by the tubing, and the inner surface portion engages with the tubing.
Tubing adapted for anchoring in a section of a bore of a first diameter, the tubing including a section with a non-circular wall configured to provide an outer surface portion describing a diameter less than the first diameter and adapted to be diametrically expanded such that the outer surface portion describes a diameter greater than the first diameter.
Tubing adapted for anchoring in a section of a bore of a first diameter, the tubing including a section with a non-circular wall configured to provide an outer surface portion describing a diameter greater than the first diameter and adapted to be elastically deformed to the first diameter.
Dependencies are inferred from the claim text.