EP 2947260 A1 20151125 - Expandable sand screen
Title (en)
Expandable sand screen
Title (de)
Erweiterbarer Sandfilter
Title (fr)
Tamis à sable expansible
Publication
Application
Priority
CN 201420268287 U 20140523
Abstract (en)
The present invention provides an expandable sand screen, including an inner pipe, an intermediate pipe fixedly sleeved on the inner pipe, and an outer pipe fixedly sleeved on the intermediate pipe, where a plurality of slots is distributed on a wall of the inner pipe, the intermediate pipe is formed by a wire-like object that is wound spirally, and a plurality of holes is distributed on a wall of the outer pipe. The present invention has the following beneficial effects: The size of sand particles to be filtered can be precisely controlled; the expanded diameter increases the drainage area and reduces the oil flow resistance, increasing the daily crude oil production per well by 30-50%.
IPC 8 full level
E21B 43/10 (2006.01)
CPC (source: EP)
E21B 43/108 (2013.01)
Citation (search report)
- [I] US 2004026313 A1 20040212 - ARLON FISCHER TODD KENNETH [US]
- [I] CA 2538112 A1 20020321 - BAKER HUGHES INC [US]
- [A] US 5642781 A 19970701 - RICHARD BENNETT M [US]
- [A] US 5979551 A 19991109 - UBAN STEPHEN A [US], et al
- [A] US 2002092649 A1 20020718 - BIXENMAN PATRICK W [US], et al
- [A] US 2004040723 A1 20040304 - HOVEM KNUT A [US]
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)
DOCDB simple family (application)
EP 14176810 A 20140711; CN 201420268287 U 20140523