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|Title:||Rheological approach of HPAM solutions under harsh conditions for EOR applications|
|Author:||Silveira, Bruno M. O.|
Lopes, Leandro F.
Moreno, Rosângela B. Z. L.
|Abstract:||The hydrolyzed polyacrylamide (HPAM) is the water-soluble polymer most often used in flooding applications. However, the temperature, salinity and hardness of the reservoirs affect its viscosifying properties reducing the sweep efficiency of the polymer solution. This work aims to tailor HPAM (Flopaam 5115SH) solutions prepared with synthetic produced water (SPW) or with distilled water only, and evaluate their rheological properties. The flow curves confirm the detrimental effects of salinity and hardness. For the target viscosity (10 mPa.s at ~7.8 s -1 and 23 °C) chosen to perform further polymer flooding tests, the required polymer concentration is 1250 ppm. At this concentration, the solution presents a thermothinning behavior as the temperature increases. Regarding the viscoelastic properties, the viscous modulus is predominant for fluids prepared with SPW, while the elastic modulus is prevalent for fluids without salts. These results contribute to the design of a polymer solution composition under interest conditions|
|metadata.dc.description.abstractalternative:||Polymers, Viscosity, Rheology, Polymer flooding,|
|Appears in Collections:||FEM - Artigos e Outros Documentos|
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