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Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors: Mechanism, Performance Evaluation, and Effect of Different Anions
[Image: see text] Clay swelling is one of the challenges faced by the oil industry. Water-based drilling fluids (WBDF) are commonly used in drilling operations. The selection of WBDF depends on its performance to improve rheology, hydration properties, and fluid loss control. However, WBDF may resul...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7581242/ https://www.ncbi.nlm.nih.gov/pubmed/33110995 http://dx.doi.org/10.1021/acsomega.0c03560 |
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author | Ahmed Khan, Rizwan Murtaza, Mobeen Abdulraheem, Abdulazeez Kamal, Muhammad Shahzad Mahmoud, Mohamed |
author_facet | Ahmed Khan, Rizwan Murtaza, Mobeen Abdulraheem, Abdulazeez Kamal, Muhammad Shahzad Mahmoud, Mohamed |
author_sort | Ahmed Khan, Rizwan |
collection | PubMed |
description | [Image: see text] Clay swelling is one of the challenges faced by the oil industry. Water-based drilling fluids (WBDF) are commonly used in drilling operations. The selection of WBDF depends on its performance to improve rheology, hydration properties, and fluid loss control. However, WBDF may result in clay swelling in shale formations during drilling. In this work, the impact of imidazolium-based ionic liquids on the clay swelling was investigated. The studied ionic liquids have a common cation group, 1-allyl-3-methyllimidozium, but differ in anions (bromide, iodide, chloride, and dicyanamide). The inhibition behavior of ionic liquids was assessed by linear swell test, inhibition test, capillary suction test, rheology, filtration, contact angle measurement, scanning electron microscopy, and X-ray diffraction (XRD). It was observed that the ionic liquids with different anions reduced the clay swelling. Ionic liquids having a dicyanamide anion showed slightly better swelling inhibition performance compared to other inhibitors. Scanning electron microscopy images showed the water tendency to damage the clay structure, displaying asymmetrical cavities and sharp edges. Nevertheless, the addition of an ionic liquid to sodium bentonite (clay) exhibited fewer cavities and a smooth and dense surface. XRD results showed the increase in d-spacing, demonstrating the intercalation of ionic liquids in interlayers of clay. The results showed that the clay swelling does not strongly depend on the type of anion in imidazolium-based ILs. However, the type of anion in imidazolium-based ILs influences the rheological properties. The performance of ionic liquids was compared with that of the commonly used clay inhibitor (sodium silicate) in the oil and gas industry. ILs showed improved performance compared to sodium silicate. The studied ionic liquids can be an attractive alternative for commercial clay inhibitors as their impact on the other properties of the drilling fluids was less compared to commercial inhibitors. |
format | Online Article Text |
id | pubmed-7581242 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-75812422020-10-26 Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors: Mechanism, Performance Evaluation, and Effect of Different Anions Ahmed Khan, Rizwan Murtaza, Mobeen Abdulraheem, Abdulazeez Kamal, Muhammad Shahzad Mahmoud, Mohamed ACS Omega [Image: see text] Clay swelling is one of the challenges faced by the oil industry. Water-based drilling fluids (WBDF) are commonly used in drilling operations. The selection of WBDF depends on its performance to improve rheology, hydration properties, and fluid loss control. However, WBDF may result in clay swelling in shale formations during drilling. In this work, the impact of imidazolium-based ionic liquids on the clay swelling was investigated. The studied ionic liquids have a common cation group, 1-allyl-3-methyllimidozium, but differ in anions (bromide, iodide, chloride, and dicyanamide). The inhibition behavior of ionic liquids was assessed by linear swell test, inhibition test, capillary suction test, rheology, filtration, contact angle measurement, scanning electron microscopy, and X-ray diffraction (XRD). It was observed that the ionic liquids with different anions reduced the clay swelling. Ionic liquids having a dicyanamide anion showed slightly better swelling inhibition performance compared to other inhibitors. Scanning electron microscopy images showed the water tendency to damage the clay structure, displaying asymmetrical cavities and sharp edges. Nevertheless, the addition of an ionic liquid to sodium bentonite (clay) exhibited fewer cavities and a smooth and dense surface. XRD results showed the increase in d-spacing, demonstrating the intercalation of ionic liquids in interlayers of clay. The results showed that the clay swelling does not strongly depend on the type of anion in imidazolium-based ILs. However, the type of anion in imidazolium-based ILs influences the rheological properties. The performance of ionic liquids was compared with that of the commonly used clay inhibitor (sodium silicate) in the oil and gas industry. ILs showed improved performance compared to sodium silicate. The studied ionic liquids can be an attractive alternative for commercial clay inhibitors as their impact on the other properties of the drilling fluids was less compared to commercial inhibitors. American Chemical Society 2020-10-06 /pmc/articles/PMC7581242/ /pubmed/33110995 http://dx.doi.org/10.1021/acsomega.0c03560 Text en © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Ahmed Khan, Rizwan Murtaza, Mobeen Abdulraheem, Abdulazeez Kamal, Muhammad Shahzad Mahmoud, Mohamed Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors: Mechanism, Performance Evaluation, and Effect of Different Anions |
title | Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors:
Mechanism, Performance Evaluation, and Effect of Different Anions |
title_full | Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors:
Mechanism, Performance Evaluation, and Effect of Different Anions |
title_fullStr | Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors:
Mechanism, Performance Evaluation, and Effect of Different Anions |
title_full_unstemmed | Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors:
Mechanism, Performance Evaluation, and Effect of Different Anions |
title_short | Imidazolium-Based Ionic Liquids as Clay Swelling Inhibitors:
Mechanism, Performance Evaluation, and Effect of Different Anions |
title_sort | imidazolium-based ionic liquids as clay swelling inhibitors:
mechanism, performance evaluation, and effect of different anions |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7581242/ https://www.ncbi.nlm.nih.gov/pubmed/33110995 http://dx.doi.org/10.1021/acsomega.0c03560 |
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