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US 12,540,270 B2Granted
Polymers and nanoparticles for flooding
AssigneeSaudi Arabian Oil Company
InventorsS. Sherry Zhu, Ayrat Gizzatov, Marta Antoniv
Life of this patent
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Abstract
A method and compounds for enhanced oil recovery (EOR) including flooding of a mixture of water and one or more of the compounds in a geological formation. The compounds have a fluoroalkyl group.
Claims5
A method comprising:
- pumping a mixture through a wellbore into a geological formation, the mixture comprising a surfactant, salt, water, and a polymer having a fluoro functional group;
- and
- flowing the mixture through the geological formation, wherein the pumping and the flowing comprise enhanced oil recovery (EOR) comprising flooding,
- wherein the flooding of the geological formation increases oil recovery from a reservoir in the geological formation, wherein the flooding comprises polymer flooding;
- and wherein the polymer having a fluoro functional group comprises the following polymeric structure:
2 more elements
A method of enhanced oil recovery (EOR), comprising:
- injecting a mixture through a wellbore into a geological formation, the mixture comprising water and a partially-hydrolyzed copolymer of fluoroalkyl acrylate and acrylamide;
- and
- flooding the geological formation with the mixture;
- and
- wherein the partially-hydrolyzed copolymer of fluoroalkyl acrylate and acrylamide comprises the following polymeric structure:
2 more elements
Dependencies are inferred from the claim text.