James J Mcgowin

US Patent:

20100307770, Dec 9, 2010

Filed:

Jun 9, 2009

Appl. No.:

12/481329

Inventors:

BARTON F. SPONCHIA - CYPRESS TX, US
AMY L. FARRAR - HOUSTON TX, US
AUBREY C. MILLS - MAGNOLIA TX, US
DOUGLAS J. MURRAY - MAGNOLIA TX, US
JOHN J. JOHNSON - MONTGOMERY TX, US
JAMES L. MCGOWIN - CYPRESS TX, US

Assignee:

BAKER HUGHES INCORPORATED - HOUSTON TX

International Classification:

E21B 33/12
E21B 43/00

US Classification:

166387, 166313

Abstract:

A junction selective contaminant exclusion tool includes a tubular positionable within the junction and having an opening through a wall thereof, a material disposed on an outside surface of the tubular, the material being capable of increasing a radial dimension between a surface of the material in contact with the tubular and an opposite surface of the material upon exposure to a selected species. A method for excluding selected contaminants from a wellbore junction is also disclosed. The method includes: disposing a junction at a wellbore casing window; disposing a tubular member having at least one opening through a wall thereof at the junction, the tubular member including an exclusion material thereon capable of existing in a first configuration and a second configuration, the second configuration obtainable upon exposure to a selected species; and exposing the material to the selected species.