EP 2407633 A3 20130814 - Downhole packer having tandem packer elements for isolating frac zones
Title (en)
Downhole packer having tandem packer elements for isolating frac zones
Title (de)
Bohrlochpacker mit Tandempackerelementen zur Isolierung von Frac-Bereichen
Title (fr)
Garniture d'étanchéité de fond de puits disposant d'éléments de garniture d'étanchéité double permettant d'isoler les zones de fracturation
Publication
Application
Priority
US 83568410 A 20100713
Abstract (en)
[origin: EP2407633A2] A tandem packer (100) seals a wellbore annulus with first and second seals. The packer has a body defining a bore therethrough and has a shoulder disposed on the body. A compressible element (150) is disposed on the body adjacent the shoulder. A piston is movably disposed on the body adjacent the compressible element and is activated by fluid pressure communicated through a port in the packer's bore. When actuated, the piston fits between the compressible element and the body to initially expand it outward. With further fluid pressure, the piston compresses the compressible element against the shoulder to expand the element radially outward and produce a first seal with a surrounding surface. A swellable element (180) also disposed on the body is swellable in the presence of an agent and expands radially outward to produce a second seal with the surrounding surface.
IPC 8 full level
E21B 33/128 (2006.01); E21B 23/06 (2006.01); E21B 33/12 (2006.01); E21B 33/124 (2006.01)
CPC (source: EP US)
E21B 23/06 (2013.01 - EP US); E21B 33/1208 (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)
Citation (search report)
- [XP] EP 2258920 A2 20101208 - WEATHERFORD LAMB [US]
- [A] US 49544 A 18650822
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 2407633 A2 20120118; EP 2407633 A3 20130814; AU 2011202199 A1 20120202; AU 2011202199 B2 20140116; US 2012012342 A1 20120119
DOCDB simple family (application)
EP 11166237 A 20110516; AU 2011202199 A 20110512; US 83568410 A 20100713