PROCESS FOR PRODUCING HYDROPHOBICALLY ASSOCIATING POLYACRYLAMIDES
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United States of America Patent
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Nov 5, 2020
app pub date -
Oct 18, 2018
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Oct 25, 2017
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Abstract
Process for producing hydrophobically associating polyacrylamides Summary Process of manufacturing hydrophobically associating polyacrylamides comprising at least acrylamide or derivatives thereof and an associative monomer by adiabatic gel polymerization of an aqueous monomer solution, wherein the concentration of the monomers in the aqueous solution is from 1 mole/kg to 3.3 mole/kg, relating to the total of all components of the aqueous monomer solution. The process yields hydrophobically associating polyacrylamides having an improved viscosity efficiency. Hydrophobically associating polyacrylamides obtainable by the process of the present invention and use of such hydrophobically associating polyacrylamides for oilfield applications, in particular for enhanced oil recovery, conformance control and hydraulic fracturing.
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