EP 2225801 A1 20100908 - PURGING OF FIBER OPTIC CONDUITS IN SUBTERRANEAN WELLS
Title (en)
PURGING OF FIBER OPTIC CONDUITS IN SUBTERRANEAN WELLS
Title (de)
ZUSAMMENFÜHREN VON FASEROPTISCHEN DURCHGÄNGEN IN UNTERIRDISCHEN BOHRLÖCHERN
Title (fr)
PURGE DE CONDUITS DE FIBRES OPTIQUES DANS DES PUITS SOUTERRAINS
Publication
Application
Priority
US 2007089000 W 20071228
Abstract (en)
[origin: WO2009085044A1] Purging of fiber optic conduits in subterranean wells. A downhole optical sensing system includes an optical line, at least two tubular conduits, one conduit being positioned within the other conduit, and the optical line being positioned within at least one of the conduits, and a purging medium flowed in one direction through one conduit, and flowed in an opposite direction between the conduits. A method of purging a downhole optical sensing system includes the steps of : installing at least two conduits and an optical line in a well as part of the sensing system, one conduit being positioned within the other conduit, and the optical line being positioned within at least one of the conduits; and flowing a purging medium through the conduits in the well, so that the purging medium flows in one direction through one conduit and in an opposite direction between the conduits.
IPC 8 full level
E21B 17/18 (2006.01); E21B 47/01 (2012.01); E21B 47/06 (2012.01); E21B 47/12 (2012.01); G01N 21/15 (2006.01); G02B 6/44 (2006.01)
CPC (source: EP US)
E21B 17/18 (2013.01 - EP); E21B 47/07 (2020.05 - EP); E21B 47/135 (2020.05 - EP); G01N 21/15 (2013.01 - EP); G02B 6/50 (2013.01 - EP US); E21B 47/017 (2020.05 - EP US); G01N 2021/151 (2013.01 - EP); G01N 2021/8528 (2013.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2009085044 A1 20090709; BR PI0722346 A2 20140318; CA 2709698 A1 20090709; CA 2709698 C 20130514; EP 2225801 A1 20100908; EP 2225801 A4 20120530
DOCDB simple family (application)
US 2007089000 W 20071228; BR PI0722346 A 20071228; CA 2709698 A 20071228; EP 07870010 A 20071228