EP 2957715 B1 20171018 - ASSEMBLY FOR TOE-TO-HEEL GRAVEL PACKING AND REVERSE CIRCULATING EXCESS SLURRY
Title (en)
ASSEMBLY FOR TOE-TO-HEEL GRAVEL PACKING AND REVERSE CIRCULATING EXCESS SLURRY
Title (de)
ANORDNUNG ZUR TOE-TO-HEEL-KIESFÜLLUNG UND ZUR UMKEHRZIRKULATION VON ÜBERSCHÜSSIGEM SCHLAMM
Title (fr)
ENSEMBLE POUR LE COMPACTAGE DE GRAVIER «TOE-TO-HEEL» ET CIRCULATION EN SENS INVERSE DE LA BOUE EN EXCÈS
Publication
Application
Priority
US 201414282692 A 20140520
Abstract (en)
[origin: EP2957715A2] A treatment assembly treats zones of a horizontal borehole. For example, the assembly can gravel pack a zone by delivering slurry down a workstring. The slurry exits the workstring's outlet and pass to the borehole annulus of the zone through a flow port in the assembly. The gravel in the slurry can pack the borehole in an alpha-beta wave from toe to heel, and the fluid returns from the borehole flow through a screen back into the assembly. After gravel packing, operators remove excess slurry from the workstring by reverse circulating down the assembly to carry the excess slurry uphole through the workstring. Closures on the assembly prevent the reverse circulation from communicating through the screens to the borehole annulus. Additionally, flow valves can be used on the flow ports to selectively open and close them.
IPC 8 full level
E21B 43/08 (2006.01); E21B 33/124 (2006.01); E21B 43/04 (2006.01)
CPC (source: EP RU)
E21B 33/124 (2013.01 - EP RU); E21B 43/04 (2013.01 - EP RU); E21B 43/08 (2013.01 - EP RU)
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
DOCDB simple family (publication)
EP 2957715 A2 20151223; EP 2957715 A3 20151230; EP 2957715 B1 20171018; AU 2015202733 A1 20151210; AU 2015202733 B2 20160616; CA 2892410 A1 20151120; NO 3124015 T3 20180825; RU 2599751 C1 20161010
DOCDB simple family (application)
EP 15168402 A 20150520; AU 2015202733 A 20150520; CA 2892410 A 20150520; NO 16177742 A 20140509; RU 2015119031 A 20150520