Collapse resistance of tubing

Details Collapse resistance of tubing Collapse resistance of tubing

2003-07-11

2009-08-18

Keith, Jack (Department: 3663)

Wells

Processes

Placing or shifting well part

C166S207000, C166S297000, C166S380000

Reexamination Certificate

active

07575060

ABSTRACT:
A method of increasing the collapse resistance of a tubular comprises locating a tool having at least one, and typically three, bearing members within a tubular. The bearing members are positioned in engagement with a wall of the tubular to apply a radial force to a discrete zone of the wall. This radial force is then applied to further discrete zones of the wall, the level of radial force being selected such that the collapse resistance of the tubular is increased.

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