Formed tubulars
AssigneeWeatherford/Lamb, Inc.
InventorsNeil Andrew Abercrombie Simpson, Simon John Harrall
Life of this patent
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Abstract
A method of lining a drilled bore comprises running a tubular into a drilled bore and then corrugating the tubular in the bore. The tubular may also be expanded in the bore. In other aspects of the invention the tubular is corrugated prior to running into the bore and may be rotated as it is run into the bore.
Claims97
A method of lining a drilled bore, the method comprising:
- providing a tool having a radially extendable member;
- running a tubular into the drilled bore;
- and
- after running the tubular into the bore, forming one or more helical or solely circumferential, selected periodic corrugations in at least a portion of a wall of the tubular using the radially extendable member, wherein the wall portion is diametrically expanded at peaks and troughs of the corrugations.
A method of lining a drilled bore, comprising:
- running a tubular into a drilled bore;
- diametrically expanding the tubular;
- and
- corrugating the tubular in the bore in a separate step from expanding, wherein the tubular is diametrically expanded before corrugation.
A method of lining a drilled bore, the method comprising:
- providing a tool having a radially extendable member;
- running a tubular into the drilled bore to intersect a problem formation;
- and
- after running the tubular into the bore, forming one or more helical or solely circumferential, selected periodic corrugations in a wall of the tubular using the radially extendable member, at least where the tubular intersects the problem formation, wherein the wall is diametrically expanded at peaks and troughs of the corrugations.
A method of forming a downhole tubular, comprising:
- providing a rotary expansion tool having a radially extendable member;
- and
- corrugating at least a portion of a cylindrical tubular by rotating the rotary expansion tool relative to the tubular to produce one or more helical or solely circumferential, selected periodic corrugations with the radially extendable member, wherein the tubular portion is diametrically expanded at peaks and troughs of the corrugations.
A downhole tubular, comprising:
- a wall having one or more helical corrugations formed in both an inner surface and an outer surface of the wall;
- and
- an elongate element located in one or more troughs of the corrugations,
- wherein the wall is made from metal.
A method of running tubing into a bore to minimize differential sticking, the method comprising:
- identifying whether elongate members located in a selected bore are likely to encounter differential sticking;
- providing corrugated tubing;
- and
- running the tubing into the bore.
A method of running tubing into a bore, the method comprising:
- running a corrugated-wall tubular into the bore;
- rotating the tubular in the bore;
- and
- cementing the tubular in the bore.
A method of running tubing into a bore, the method comprising:
- running a tubular defining a helically corrugated configuration into the bore;
- and
- rotating the tubular in the bore to negotiate a tight spot in the bore,
- wherein the tubular is made from metal.
Downhole tubulars, each tubular comprising at least one corrugated end portion, whereby the tubulars are adapted to be coupled to one another by locating the corrugated end portion of one tubular within the corrugated end portion of another tubular, wherein the corrugations are helical and the tubulars are made from metal.
A method of locating a tubular within a larger diameter bore, the method comprising:
- providing a corrugated tubular;
- locating the tubular in the larger diameter bore;
- and
- reducing a degree of tension applied to the tubular such that the tubular axially contracts and diametrically expands.
Completion tubing having at least a portion of corrugated wall to accommodate a degree of at least one of axial compression and expansion in combination with a seal for locking a lower end of the tubing relative to surrounding bore-lining tubing.
A method of lining a bore, the method comprising:
- diametrically expanding a wall of a helically or solely circumferentially corrugated tubular in the bore such that the wall is deformed about its entire circumference;
- and
- selecting at least one of a degree of expansion, an expansion method, and a degree of corrugation of the tubular such that the tubular both before and after the diametrically expanding has a length that is substantially unchanged.
A downhole tubular, comprising:
- a male helically corrugated first end portion adapted to be coupled to a female helically corrugated end portion of a substantially identical second downhole tubular;
- a female helically corrugated second end portion adapted to be coupled to a male helically corrugated end portion of the substantially identical second downhole tubular;
- and
- a body portion extending between the end portions,
- wherein the tubular is made from metal.
A method of lining a drilled bore, the method comprising:
- providing a tool having a radially extendable member;
- running a tubular into the drilled bore;
- and
- corrugating the tubular in the bore into selected periodic corrugations, each having a substantial circumferential component, wherein the tubular is diametrically expanded at the corrugations and between the corrugations by the radially extendable member configured to also provide the corrugations.
A method of lining a drilled bore, the method comprising:
- providing a tool having a radially extendable member;
- running a tubular into a drilled bore to intersect a problem formation;
- and
- corrugating the tubular in the bore into selected periodic corrugations at least where the tubular intersects the problem formation, each corrugation having a substantial circumferential component, wherein the tubular is diametrically expanded at the corrugations and between the corrugations with the radially extendable member configured to also form the corrugations.
A method of forming a downhole tubular, comprising:
- providing a rotary expansion tool having a radially extendable member;
- and
- corrugating a cylindrical tubular by rotating the rotary expansion tool relative to the tubular to produce selected periodic corrugations, each having a substantial circumferential component, wherein the tubular is diametrically expanded at the corrugations and between the corrugations by the radially extendable member configured to also form the corrugations.
A downhole tubular, comprising:
- a wall having one or more helical corrugations formed therein;
- and
- an elongate element located in one or more internal troughs of the corrugations, wherein:
- the wall is made from metal, and
- a wall thickness of a corrugated portion is the same as a wall thickness of an un-corrugated portion.
A downhole tubular, comprising:
- a wall having one or more helical corrugations formed therein;
- and
- an elongate element located in one or more troughs of the corrugations, wherein:
- the wall is made from metal,
- the wall has a substantially uniform thickness, and
- the troughs are internal troughs.
Dependencies are inferred from the claim text.