公开(公告)号：US20220145167A1

公开(公告)日：2022-05-12

申请号：US17433163

申请日：2020-02-14

Applicant: RHODIA OPERATIONS ,  IFP Energies Nouvelles

Inventor： Eloise Chevallier ,  Mikel Morvan ,  Vincent Miralles

IPC: C09K8/594 ,  C09K8/588 ,  C09K8/584 ,  E21B43/16

Abstract: The invention relates to a composition C which comprises, in an aqueous medium M: surfactants suitable for creating a foam in the presence of a gas; and polymers P based on acrylamide or acrylamido units, having a molecular mass of 1,000,000 to 20,000,000 g/mol; or: composition C has a viscosity of less than 6 mPa·s; and the content of polymer P is greater than the concentration limit beyond which the apparent viscosity of a foam obtained from composition C is greater by at least 10% than the apparent viscosity of a foam obtained from the same composition but deprived of polymers. The invention further relates to the use of these compositions as foaming compositions for EOR.

公开(公告)号：US11384278B2

公开(公告)日：2022-07-12

申请号：US16771029

申请日：2018-12-13

Applicant: RHODIA OPERATIONS

Inventor： Vincent Miralles ,  Mikel Morvan ,  David-James Wilson

IPC: E21B43/16 ,  C09K8/588 ,  C09K8/584

Abstract: An aqueous formulation for enhanced oil recovery may include at least one surfactant and at least one associative polymer. The associative polymer may be obtained by micellar radical polymerization by bringing into contact, in an aqueous medium, hydrophilic monomer dissolved in the aqueous medium, hydrophobic monomers in the form of a micellar solution, at least one radical polymerization initiator, and preferably at least one radical polymerization control agent.

公开(公告)号：US11421147B2

公开(公告)日：2022-08-23

申请号：US16771029

申请日：2018-12-13

Applicant: RHODIA OPERATIONS

Inventor： Vincent Miralles ,  Mikel Morvan ,  David-James Wilson

IPC: E21B43/16 ,  C09K8/588 ,  C09K8/584

Abstract: An aqueous formulation for enhanced oil recovery may include at least one surfactant and at least one associative polymer. The associative polymer may be obtained by micellar radical polymerization by bringing into contact, in an aqueous medium, hydrophilic monomer dissolved in the aqueous medium, hydrophobic monomers in the form of a micellar solution, at least one radical polymerization initiator, and preferably at least one radical polymerization control agent.