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A Study on the Water/Polymer Co-Flooding Seepage Law and Reasonable Polymer Injection Volume in Offshore Oilfields
Open AccessFeature PaperArticle

Enhancing the Performance of HPAM Polymer Flooding Using Nano CuO/Nanoclay Blend

Department of Chemical & Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Department of Petroleum and Energy Studies, DIT University, Dehradun, Uttarakhand 248009, India
MDNK Oil & Gas Consultants, Mumbai, Maharashtra 400001, India
Department of Petroleum Engineering and Earth Sciences, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248001, India
Author to whom correspondence should be addressed.
Processes 2020, 8(8), 907;
Received: 28 June 2020 / Revised: 20 July 2020 / Accepted: 22 July 2020 / Published: 1 August 2020
A single polymer flooding is a widely employed enhanced oil recovery method, despite polymer vulnerability to shear and thermal degradation. Nanohybrids, on the other hand, resist degradation and maintain superior rheological properties at different shear rates. In this article, the effect of coupling CuO nanoparticles (NPs) and nanoclay with partially hydrolyzed polyacrylamide (HPAM) polymer solution on the rheological properties and the recovery factor of the nanohybrid fluid was assessed. The results confirmed that the NP agents preserved the polymer chains from degradation under mechanical, chemical (i.e., salinity), and thermal stresses and maintained good extent of entanglement among the polymer chains, leading to a strong viscoelastic attribute, in addition to the pseudoplastic behavior. The NP additives increased the viscosity of the HPAM polymer at shear rates varying from 10–100 s−1. The rheological properties of the nanohybrid systems varied with the NP additive content, which in turn provided a window for engineering a nanohybrid system with a proper mobility ratio and scaling coefficient, while avoiding injectivity issues. Sandpack flooding tests confirmed the superior performance of the optimized nanohybrid system and showed a 39% improvement in the recovery ratio relative to the HPAM polymer injection. View Full-Text
Keywords: polymer flooding; nanohybrid; nanoparticle; nanoclay; CEOR; rheology polymer flooding; nanohybrid; nanoparticle; nanoclay; CEOR; rheology
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MDPI and ACS Style

Kumar, S.; Tiwari, R.; Husein, M.; Kumar, N.; Yadav, U. Enhancing the Performance of HPAM Polymer Flooding Using Nano CuO/Nanoclay Blend. Processes 2020, 8, 907.

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