BLOCK COPOLYMERS FOR RECOVERING HYDROCARBON FLUIDS FROM A SUBTERRANEAN RESERVOIR

The present disclosure is directed to compositions and methods that may be used for enhanced oil recovery, for modifying the permeability of subterranean formations and for increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. The compositions may include,...

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Bibliographic Details
Main Authors JOYCE, WILLIAM, H, CHANG, KIN-TAI, KURIAN, PIOUS
Format Patent
LanguageEnglish
French
Published 29.10.2009
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:The present disclosure is directed to compositions and methods that may be used for enhanced oil recovery, for modifying the permeability of subterranean formations and for increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. The compositions may include, for example, expandable cross-linked polymeric microparticles having unexpanded volume average particle size diameters of from about 0.05 to about 5,000 microns and cross linking agent contents of from about 100 to about 200,000 ppm of labile cross linkers and from 0 to about 300 ppm of non-labile cross linkers, wherein the expandable polymeric monomers have a block copolymer structure comprising at least two different monomers having different chemical structures. La présente invention porte sur des compositions et des procédés qui peuvent être utilisés pour la récupération d'huile améliorée, pour modifier la perméabilité de formations souterraines et pour augmenter la mobilisation et/ou le taux de récupération de fluides hydrocarbonés présents dans les formations. Les compositions peuvent comprendre, par exemple, des microparticules polymères réticulées expansibles ayant des diamètres de dimension de particule moyenne en volume non expansé d'environ 0,05 à environ 5 000 microns et des teneurs en agent de réticulation d'environ 100 à environ 200 000 ppm de réticulants labiles et de 0 à environ 300 ppm de réticulants non labiles, les monomères polymères expansibles ayant une structure de copolymère à blocs comprenant au moins deux monomères différents ayant différentes structures chimiques.
Bibliography:Application Number: WO2009US40884