EP 2758488 A1 20140730 - COMPOSITIONS AND METHODS OF TREATING HIGH TEMPERATURE SUBTERRANEAN FORMATIONS
Title (en)
COMPOSITIONS AND METHODS OF TREATING HIGH TEMPERATURE SUBTERRANEAN FORMATIONS
Title (de)
ZUSAMMENSETZUNGEN UND VERFAHREN ZUR BEARBEITUNG UNTERIRDISCHER HOCHTEMPERATUR-FORMATIONEN
Title (fr)
COMPOSITIONS ET PROCÉDÉS DE TRAITEMENT DE FORMATIONS SOUTERRAINES À TEMPÉRATURE ÉLEVÉE
Publication
Application
Priority
- US 201113236378 A 20110919
- US 2012043308 W 20120620
Abstract (en)
[origin: WO2013043243A1] Well treatment fluids and methods of treating high temperature subterranean formations of up to about 500 F (260 C) are provided. The well treatment fluids and methods utilize a high molecular weight synthetic copolymer and a pH buffer than maintains a pH in a range of about 4.5 to about 5.25 for the fluids. The high molecular weight synthetic copolymer is derived from acrylamide, acrylamidomethylpropanesulfonic acid, and vinyl phosphonates. The well treatment fluids may be energized or foamed.
IPC 8 full level
C09K 8/68 (2006.01); C09K 8/70 (2006.01); C09K 8/72 (2006.01)
CPC (source: CN EP)
C09K 8/602 (2013.01 - CN); C09K 8/604 (2013.01 - CN); C09K 8/685 (2013.01 - CN EP); C09K 8/703 (2013.01 - CN EP); C09K 8/725 (2013.01 - EP); C09K 8/882 (2013.01 - CN); C09K 8/887 (2013.01 - CN); C09K 2208/24 (2013.01 - CN); C09K 2208/26 (2013.01 - CN)
Citation (search report)
See references of WO 2013043243A1
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)
WO 2013043243 A1 20130328; AR 087893 A1 20140423; AU 2012313410 A1 20140320; BR 112014006604 A2 20170328; CA 2849248 A1 20130328; CA 2849248 C 20180710; CN 104024369 A 20140903; CO 6910177 A2 20140331; EP 2758488 A1 20140730; MX 2014003324 A 20140521; MX 368317 B 20190927; NZ 621852 A 20160729; RU 2014115672 A 20151027
DOCDB simple family (application)
US 2012043308 W 20120620; AR P120103412 A 20120914; AU 2012313410 A 20120620; BR 112014006604 A 20120620; CA 2849248 A 20120620; CN 201280045707 A 20120620; CO 14054084 A 20140313; EP 12731854 A 20120620; MX 2014003324 A 20120620; NZ 62185212 A 20120620; RU 2014115672 A 20120620