Journal
APPLIED NANOSCIENCE
Volume 5, Issue 8, Pages 1009-1016Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13204-014-0399-x
Keywords
Enhanced oil recovery; Polyacrylamide; Nanospheres; Coreflood; Displacement mechanism
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This paper presents the investigation of using nanoscale polyacrylamide-based spheres (nanospheres) as a displacement fluid in enhanced oil recovery (EOR). Coreflood experiments were conducted to evaluate the impact of nanospheres and its concentration dispersed in model formation water on oil recovery during a tertiary oil recovery process. The coreflood results showed that nanospheres can enhance residual oil recovery in the sandstone rock samples and its concentration showed a significant impact into incremental oil. By evaluating the contact angle, it was observed that wettability alteration also might be involved in the possible oil displacement mechanism in this process together with fluid behavior and permeability to water that might divert injected fluid into unswept oil areas and enhance the residual oil recovery. These investigations promote nanospheres aqueous disperse solution as a potential displacement fluid in EOR.
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