US 2003/0209352 A1 · Method of screen or pipe expansion downhole without addition of pipe at the surface

Abstract

A method of streamlining expansion of long lengths of tubulars or screen is disclosed. In one embodiment, the expansion assembly is coupled with a length of pipe that acts as a weight and has a length longer than the anticipated section to be expanded. There is a stinger that fits into the pipe above the anchor and a seal to maintain sealing contact despite the downhole advance of the expansion assembly following each stroke of the expansion device and advance of a swage. By sequentially applying and removing pressure, the desired length is expanded downhole. Alternatively, coiled tubing is connected to the expansion assembly and weights that are above it and is paid out into the well as the expansion assembly descends after each stroke.

Claims21

Dependent claims

A method of expanding a screen and/or tubular downhole, comprising:

delivering on a string an assembly comprising the screen and/or tubular, a swage connected to a telescoping assembly and a selectively releasable anchor, to a desired depth;
selectively advancing said assembly into the wellbore relative to said string while maintaining sealing contact therebetween;
and
expanding the screen and/or tubular.

1 more element

Dependencies are inferred from the claim text.

Method of screen or pipe expansion downhole without addition of pipe at the surface

Life of this patent

Method of screen or pipe expansion downhole without addition of pipe at the surface

Life of this patent

Abstract

Claims21