Patent ID: 8783356
Filing Date: 2014-07-22
Classification: C04B,C08F,C09K,E21B

Abstract:
1. A process for the development, exploitation, and completion of subterranean mineral oil deposits and natural gas deposits comprising utilizing a water-soluble, hydrophobically associating copolymer comprising at least (a) 0.1 to 12% by weight of at least one monoethylenically unsaturated, hydrophobically associating monomer (a), and (b) 70% to 99.5% by weight of at least one monoethylenically unsaturated hydrophilic monomer (b) different therefrom, wherein the quantitative data are based in each case on the total amount of all of the monomers in the copolymer, wherein at least one of the monomers (a) is a monomer of the general formula (I) wherein the units —(—CH k: a number from 10 to 150, l: a number from 5 to 25, R R R R R wherein said water-soluble, hydrophobically associating copolymer is a copolymer (A1) which comprises at least two different hydrophilic monomers (b), and these are at least