公开(公告)号：US20220127518A1

公开(公告)日：2022-04-28

申请号：US17572046

申请日：2022-01-10

Applicant: CHEVRON U.S.A. INC.

Inventor： Hong Yang ,  Frances Troy

IPC: C09K8/588 ,  E21B43/25 ,  C09K8/68

Abstract: Disclosed are methods of using liquid polymer and inverse emulsion compositions comprising one or more hydrophobic liquids having a boiling point at least about 100° C.; one or more acrylamide-(co)polymers; one or more emulsifier surfactants; one or more inverting surfactants; and one or more stabilizing agents (e.g., one or more siloxane polyether compounds, one or more poly(alkyl)acrylate compounds, or any combination thereof). When the composition is inverted in an aqueous solution, it provides an inverted solution having a filter ratio using a 1.2 micron filter (FR1.2) of about 1.5 or less. The inverted solutions can be used in oil and gas operations.