EP 2838972 A4 20151223 - SELF-SUSPENDING PROPPANTS FOR HYDRAULIC FRACTURING
Title (en)
SELF-SUSPENDING PROPPANTS FOR HYDRAULIC FRACTURING
Title (de)
SELBSTSCHWEBENDE STÜTZMITTEL FÜR HYDRAULISCHE FRAKTURIERUNG
Title (fr)
AGENTS DE SOUTÈNEMENT EN AUTO-SUSPENSION POUR FRACTURATION HYDRAULIQUE
Publication
Application
Priority
- US 201261635612 P 20120419
- US 201261662681 P 20120621
- US 201213599828 A 20120830
- US 201261725751 P 20121113
- US 201361764792 P 20130214
- US 2013032424 W 20130315
Abstract (en)
[origin: WO2013158306A1] The invention relates to modified proppants, comprising a proppant particle and a hydrogel coating, wherein the hydrogel coating localizes on the surface of the proppant particle to produce the modified proppant. The proppant particles can be solids such as sand, bauxite, sintered bauxite, ceramic, or low density proppant. Alternatively or additionally, the proppant particle comprises a resin-coated substrate. Optionally, the modified proppant further comprises an adhesion promoter, optionally affixing the hydrogel coating to the resin-coated substrate. The hydrogel coating preferably comprises a water-swellable polymer. The hydrogel coating can be manufactured form a water soluble polymer. The preferred weight average molecular weight of the polymer is about 1 million g/mol, preferably about 5 million g/mol.
IPC 8 full level
C09K 8/80 (2006.01); E21B 43/26 (2006.01); E21B 43/267 (2006.01)
CPC (source: CN EP RU)
C09K 8/685 (2013.01 - CN); C09K 8/805 (2013.01 - CN EP); E21B 43/267 (2013.01 - CN EP); C09K 8/805 (2013.01 - RU); Y10S 507/924 (2013.01 - RU); Y10T 428/252 (2015.01 - RU)
Citation (search report)
- [XI] WO 2011050046 A1 20110428 - SOANE ENERGY LLC [US], et al
- [XI] WO 2011056409 A2 20110512 - BAKER HUGHES INC [US], et al
- [XI] US 2005194141 A1 20050908 - SINCLAIR A R [US], et al
- [XI] WO 2008056302 A1 20080515 - SCHLUMBERGER CA LTD [CA], et al
- [XI] EP 0933414 A1 19990804 - HALLIBURTON ENERGY SERV INC [US]
- [XI] WO 2005121505 A2 20051222 - HALLIBURTON ENERGY SERV INC [US], et al
- See references of WO 2013158306A1
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 2013158306 A1 20131024; AU 2013249741 A1 20141106; AU 2013249743 A1 20141106; AU 2013249743 B2 20161222; AU 2017200137 A1 20170202; BR 112014026038 A2 20170627; BR 112014026041 A2 20170627; CA 2870726 A1 20131024; CA 2870730 A1 20131024; CN 104364343 A 20150218; CN 104379697 A 20150225; EP 2838972 A1 20150225; EP 2838972 A4 20151223; EP 2838973 A1 20150225; EP 2838973 A4 20160302; HK 1203212 A1 20151023; HK 1203213 A1 20151023; MX 2014012609 A 20150119; MX 2014012610 A 20150408; RU 2014145131 A 20160610; RU 2621239 C2 20170601; WO 2013158308 A1 20131024
DOCDB simple family (application)
US 2013032424 W 20130315; AU 2013249741 A 20130315; AU 2013249743 A 20130315; AU 2017200137 A 20170109; BR 112014026038 A 20130315; BR 112014026041 A 20130315; CA 2870726 A 20130315; CA 2870730 A 20130315; CN 201380030233 A 20130315; CN 201380030270 A 20130315; EP 13778014 A 20130315; EP 13778228 A 20130315; HK 15103786 A 20150420; HK 15103787 A 20150420; MX 2014012609 A 20130315; MX 2014012610 A 20130315; RU 2014145131 A 20130315; US 2013032435 W 20130315