Investigation of inverse emulsion assisted controlled release of polyacrylamides for enhanced oil recovery.

ABSTRACT: Conventional polymer flooding (e.g. using polyacrylamide) has been widely used in the oil fields as an economical means for enhanced oil recovery. However, its efficacy is affected by the polymer properties and increasingly harsh reservoir conditions. In this study, a high-molecular-weight modified polyacrylamide polymer (GF-1) encapsulated in a water-in-oil emulsion is proposed for controlled polymer release towards enhanced oil recovery. It is compared with the conventional polyacrylamide in terms of their microscopic morphology, dissolving capacity, concentration-viscosity relationship, and rheological properties. It contained swollen polymer micelles and gradually released the polymer after phase inversion, which caused its viscosity, viscoelasticity, and plugging capacity to in

SUBMITTER: Liu Z 

PROVIDER: S-EPMC9063482 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature