EP 2407632 A2 20120118 - Downhole packer having swellable sleeve
Title (en)
Downhole packer having swellable sleeve
Title (de)
Bohrlochpacker mit quellfähiger Hülse
Title (fr)
Garniture d'étanchéité de fond de puits dotée d'un manchon gonflable
Publication
Application
Priority
US 83568710 A 20100713
Abstract (en)
A packer (200) seals a wellbore annulus. The packer has a body defining a bore therethrough and has a swellable element (250) disposed on the body. An expander (240) movably disposed on the body adjacent the swellable element is actuated by fluid pressure communicated through a port in the body's bore. When actuated, the expander fits between the swellable element and the body to expand the swellable element radially outward an initial expansion amount. While downhole, the swellable element swells in the presence of an agent downhole and expands radially outward a subsequent expansion amount to produce a seal with a surrounding surface. With further fluid pressure, the expander can also compress the swellable element to further increase the expansion amount of the swellable element.
IPC 8 full level
E21B 33/124 (2006.01); E21B 23/04 (2006.01); E21B 23/06 (2006.01); E21B 33/128 (2006.01); E21B 33/134 (2006.01)
CPC (source: EP US)
E21B 23/06 (2013.01 - EP US); E21B 33/124 (2013.01 - EP US); E21B 33/1243 (2013.01 - EP US); E21B 33/1285 (2013.01 - EP US); E21B 33/134 (2013.01 - EP US)
Citation (applicant)
US 6612372 B1 20030902 - FREIHEIT ROLAND R [CA], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2407632 A2 20120118; EP 2407632 A3 20130814; AU 2011202242 A1 20120202; US 2012012343 A1 20120119
DOCDB simple family (application)
EP 11166245 A 20110516; AU 2011202242 A 20110516; US 83568710 A 20100713