Expansion method
AssigneeWeatherford/Lamb, Inc.
InventorsAlexander Craig MacKay, Neil Andrew Abercrombie Simpson
Life of this patent
Estimating the term…
Abstract
A method of expanding tubing downhole comprises the steps of: providing tubing (14;44) of a first diameter; running the tubing into a bore (10;40); expanding a first section of the tubing to a second diameter, and expanding a second section of the tubing to a third diameter.
Claims68
A method of lining a drilled bore, the method comprising the steps:
- (a) running a first tubing length of a first diameter into the bore;
- (b) running a second tubing length into the bore, such that the tubing lengths overlap;
- (c) expanding at least a portion of the second tubing length where the tubing lengths overlap, to a second diameter;
- and
- (d) expanding at least a further portion of the remainder of the second tubing length to a third diameter.
A method of lining a drilled bore, the method comprising the steps:
- (a) running a first tubing length of a first diameter into the bore;
- (b) expanding said first tubing length to a larger second diameter;
- (c) running a second tubing length into the bore, such that an upper end of the second tubing length overlaps with a lower end of the first tubing length;
- (d) expanding the upper end of the second tubing to a third diameter larger than said first diameter but smaller than said second diameter;
- and
- (e) expanding at least a further portion of the remainder of the second tubing length to said second diameter.
A method of lining a drilled bore, the method comprising the steps:
- (a) running a first tubing length into the bore;
- (b) running a second tubing length having a first diameter into the bore, such that an upper end of the second tubing length overlaps with the lower end of the first tubing length;
- (c) expanding a portion of the second tubing length to a diameter larger than the first diameter;
- and
- (d) expanding another portion of the second tubing.
A method of expanding tubing downhole, the method comprising the steps of:
- running tubing of a first diameter into a bore;
- expanding a first section of the tubing to a second diameter;
- and
- expanding a second section of the tubing to a third diameter.
A method of expanding tubing downhole, the method comprising the steps of:
- running tubing into a bore;
- expanding a first section of the tubing;
- and
- expanding a second section of the tubing, wherein the expanded first and section sections are of different diameters.
A method of expanding tubing downhole, the method comprising the steps of:
- running tubing into a bore;
- and
- expanding a portion of the tubing, intermediate the ends of the tubing, to a larger diameter.
Dependencies are inferred from the claim text.