公开(公告)号：US09874059B2

公开(公告)日：2018-01-23

申请号：US15023296

申请日：2014-09-18

Applicant: STATOIL PETROLEUM AS

Inventor： Gjermund Grimsbo ,  Pål Viggo Hemmingsen ,  Rune Godøy

IPC: E21B17/10 ,  E21B43/10 ,  E21B33/13

CPC classification number: E21B17/1014 ,  E21B17/10 ,  E21B17/1021 ,  E21B17/1078 ,  E21B33/13 ,  E21B43/103

Abstract: A method of centralizing a tubing in a wellbore includes providing one or more expandable elements between the tubing and a surrounding casing located in a wellbore and expanding the expandable elements against the casing so as to cause the tubing to become centered within the casing. Alternatively, one or more portions of a tubing are expanded against a surrounding casing located in a wellbore so as to cause the tubing to become centered within the casing.