Expandable centralizer for downhole tubulars
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 27, 2004
Grant Date -
Dec 18, 2003
app pub date -
Jun 18, 2002
filing date -
Jun 18, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Centralizers made of a non-metallic material in a variety of styles are placed on the exterior of tubing or casing prior to expansion. The compliant nature of such materials, when put into service in a centralizer for tubulars to be expanded prevents scoring the pipe on the way downhole. Scratches or scores of the pipe can be the location of stress fractures on expansion. Additionally, the resilient nature of the centralizers prevents them from adding significantly to the required expansion force and allows them to act as seals against channeling in the cemented annular space after expansion.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully