Tubing expansion

Details Tubing expansion Tubing expansion

2005-09-13

2005-09-13

Tsay, Frank (Department: 3672)

Wells

Expansible anchor or casing

Expansible casing

C166S217000, C166S380000

Reexamination Certificate

active

06942029

ABSTRACT:
A method of coupling first and second tubulars (12,14) comprises providing a first tubular having a first yield strength and a second tubular having a higher second yield strength. A portion of the first tubular is located within and overlapping a portion of the second tubular and the first tubular is expanded sufficient to expand the second tubular, at least the first tubular being expanded beyond its yield point. Following expansion, a degree of elastic contraction of the tubulars is permitted, sufficient to provide interference between the tubulars.

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patent: 02/081863 (2002-10-01), None
Bourgoyne, Jr. et al, Applied Drilling Engineering, Society of Petroleum Engineers, 1986, p. 428.

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