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Experimental and Theoretical Investigation of Gelation Time of Nanostructured Polymer Gels by Central Composite Approach

Credit to Download: 1 | Page Numbers 12 | Abstract Views: 24
Year: 2020
COI code: JR_IJOGST-9-2_005
Paper Language: English

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Authors Experimental and Theoretical Investigation of Gelation Time of Nanostructured Polymer Gels by Central Composite Approach

  Mohsen Seidmohammadi - Ph.D. Candidate, Faculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Sahand New Town, Tabriz, Iran
  Eghbal Sahraei - Associate Professor, Faculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Sahand New Town, Tabriz, Iran
  Behrouz Bayati - Assistant Professor, Department of Chemical Engineering, Ilam University, Ilam, Iran

Abstract:

Currently available polymers as a component of in-situ gels are unsuitable for treating high-temperature/high-salinity reservoirs due to their chemical and thermal degradation. In this study, a new copolymer-based gel system including high molecular weight nanostructured polymers (NSPs) was developed to address the excessive water production problem in reservoirs under harsh conditions. The stability of conventional polymer systems and NSPs was investigated under conditions of 40 days aging at 87000 ppm salinity and 90 °C. Then, gelation time optimization of gel systems composed of NSPs and chromium (III) acetate was performed with regards to the effect of copolymer concentration and copolymer/cross-linker ratio and their interactions during the gelation time. The central composite approach was used to design experiments and build a mathematical model. The analysis of variance (ANOVA) was used to estimate the deviation of the model predictions from the data. The results of stability analysis demonstrated the advantages of NSPs over conventional polymers by a viscosity reduction of 69, 36, and 18% for Flopaam3310, AN105, and NSPs respectively. The model developed for the prediction of gelation time of NSPs gel was significant at a confidence level of 98.6% against the test data. Moreover, it was found that gelation time became longer with a decrease in copolymer concentrations and/or increase in copolymer/cross-linker ratio.

Keywords:

Water Shutoff, Gelation Time, Polymer Stability, Central Composite Approach, Nanostructured Polymers

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Seidmohammadi, Mohsen; Eghbal Sahraei & Behrouz Bayati, 2020, Experimental and Theoretical Investigation of Gelation Time of Nanostructured Polymer Gels by Central Composite Approach, Iranian Journal of Oil & Gas Science and Technology 9 (2), https://www.civilica.com/Paper-JR_IJOGST-JR_IJOGST-9-2_005.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
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Paper No.: 3552
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