Patent · US Active

Integrated continuous liner expansion method

US8826974B2 · kind B2 · utility

2Cited by

95References

23Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Joerg Lehr · Sulingen, DE
Anja Erdmann · Celle, DE
Keven O'Connor · Houston, US
Ines Gruetzmann · Burgdorf, DE

Key dates

Filing date	Aug 23, 2011
Grant date	Sep 9, 2014
Priority date	—
Expiry date	Oct 17, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B43/105
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An additional string is run through an existing string using a running string. With the strings overlapping an upper inflatable secures them together leaving gaps. The upper inflatable creates an upper expanded zone where the swage assembly is then built. The swage assembly has a seal and upon pressure being applied between the upper inflatable and the seal the swage assembly releases the running string and is pushed to expand the additional string until tagging a cement shoe. The running string is rejoined to the swage assembly and after cementing a lower inflatable is deployed to make a bell and to set an external packer if used. If there is an external packer the shoe releases and on the way out of the hole the upper inflatable sets a seal in the lap.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.