公开(公告)号：US20190031946A1

公开(公告)日：2019-01-31

申请号：US16069646

申请日：2017-01-04

Applicant: BASF SE

Inventor： ROLAND RECHENBACH-KLINKE ,  Christian BITTNER ,  Tobias ZIMMERMANN ,  Arne STAVLAND

IPC: C09K8/588 ,  C08F220/56

Abstract: A method of tertiary production of mineral oil from underground deposits having a deposit temperature of ≤70° C., in which a copolymer comprising (meth)acrylamide or derivatives thereof, monoethylenically unsaturated carboxylic acids, especially acrylic acid, and an associative monomer is used, wherein the amount of the associative monomer is 0.1% to 0.9% by weight. A water-soluble copolymer comprising (meth)acrylamide or derivatives thereof, monoethylenically unsaturated carboxylic acids, especially acrylic acid, and 0.1% to 0.9% by weight of an associative monomer.

公开(公告)号：US20170101576A1

公开(公告)日：2017-04-13

申请号：US15103356

申请日：2014-12-05

Applicant: BASF SE

Inventor： Björn LANGLOTZ ,  Tobias ZIMMERMANN ,  Roland REICHENBACH-KLINKE ,  Christian BITTNER

IPC: C09K8/588 ,  E21B43/16 ,  C08F220/56

CPC classification number: C09K8/588 ,  C08F220/56 ,  C08F2800/20 ,  C08L33/26 ,  E21B43/16

Abstract: A process for producing mineral oil from underground mineral oil deposits, in which an aqueous formulation comprising at least one water-soluble, hydrophobically associating copolymer is injected through at least one injection well into a mineral oil deposit having a deposit temperature of 20° C. to 120° C. and crude oil is withdrawn from the deposit through at least one production well, wherein the water-soluble copolymer comprises at least acrylamide or derivatives thereof and a mixture comprising at least two amphiphilic macromonomers.