公开(公告)号：AU2009328509A1

公开(公告)日：2011-07-21

申请号：AU2009328509

申请日：2009-11-07

Applicant: BASF SE

Inventor： ROLAND REICHENBACH-KLINKE ,  MARCUS GUZMANN ,  THOMAS PFEUFFER ,  GREGOR HERTH ,  STEFAN FRIEDRICH

IPC: C09K8/508 ,  C09K8/512 ,  C09K8/516

Abstract: A method for blocking subterranean formations in the extraction of fossil oil and/or gas is proposed, wherein water-absorbent particles are introduced into porous and fluid-conducting rock formations in a first step, said particles being water-swellable, crosslinked and water-insoluble polymers, and wherein the particles in the water-conducting rock formation ultimately suppress the fluid flow through the rock layers by absorption of water. Said method is characterized in that the absorbent particles are a superabsorbent polymer having anionic and/or cationic properties and a time-delayed swelling effect. Said method, which can also be performed in saline formation water, has the characteristic that the swelling of the superabsorbers used begins after five minutes at the earliest, and the superabsorbers are accessible through four proposed process variants and any combinations thereof. Said method, which does not require a carrier fluid, has the characteristics of simplicity and in particular the controllable delay in the swelling effect under the specific conditions of subterranean rock formations.

公开(公告)号：BR112012001710B1

公开(公告)日：2019-12-24

申请号：BR112012001710

申请日：2010-07-30

Applicant: BASF SE

Inventor： MARCUS GUZMANN ,  ROLAND REICHENBACH-KLINKE ,  STEFAN FRIEDRICH ,  THOMAS PFEUFFER

IPC: C08F222/00 ,  C08F220/00

Abstract: copolímero hidrofobicamente associado solúvel em água, e, processo de preparação do mesmo a presente invenção refere-se a um copolímero que se associa hidrofobicamente, solúvel em água que compreende um monômero (a) mono- etilenicamente insaturado, solúvel em água, tensoativo e um monômero (b) hidrofílico mono-etilenicamente insaturado, diferente do monômero (a). o copolímero é preparado na presença de um tensoativo não polimerizável e tem propriedades de espessamento acentuadas em sistemas aquosos.

公开(公告)号：AU2010251271A1

公开(公告)日：2011-11-24

申请号：AU2010251271

申请日：2010-05-17

Applicant: BASF SE

Inventor： ROLAND REICHENBACH-KLINKE ,  THOMAS PFEUFFER ,  KATI SCHMIDT ,  THOMAS OSTROWSKI ,  LEYRER REINHOLD J ,  YULIA FOGEL ,  STEFAN FRIEDRICH ,  PETER GAEBERLEIN ,  ANDREA ORLEANS ,  MANFRED SCHUHBECK ,  MARCUS GUZMANN ,  MARKUS ROSCH ,  BJORN LANGLOTZ

IPC: C08F220/34 ,  C08F220/56 ,  C08F220/58

Abstract: The invention relates to water-soluble, hydrophobically associating copolymers containing novel hydrophobically associating monomers. The monomers comprise an ethylenically unsaturated group and a polyether group with a block structure consisting of a hydrophilic polyalkylene oxide block, which essentially consists of ethylene oxide groups, and of a terminal, hydrophobic polyalkylene oxide block, which consists of alkylene oxides with at least 4 and preferably at least 5 carbon atoms.