Density-Functional Theory Investigation of Barite Scale Inhibition Using Phosphonate and Carboxyl-Based Inhibitors
المؤلف | Al Hamad M. |
المؤلف | Al-Sobhi S.A. |
المؤلف | Onawole A.T. |
المؤلف | Hussein I.A. |
المؤلف | Khraisheh M. |
تاريخ الإتاحة | 2022-04-25T10:59:45Z |
تاريخ النشر | 2020 |
اسم المنشور | ACS Omega |
المصدر | Scopus |
المعرّف | http://dx.doi.org/10.1021/acsomega.0c05125 |
الملخص | Scale deposition is a critical issue in oil and gas exploration and production processes, causing significant blocking in tubing and consequently flow assurance and economic losses. Most studies addressing the scale formation have been limited on the experimental impact of different variables on scale formation. In this work, the inhibition of barite scale deposition was investigated by employing molecular simulations for three different scale inhibitors, namely, polyaspartic acid (PASP), nitrilotrimethylenephosphonate (NTMP), and dimethylenetriaminepenta(methylene-phosphonic acid) (DETPMP). Geometrical analyses were used to explore the performances of the inhibitors and visualize the outcomes. quantitative structure activity relationship parameters were also used to predict the activity of the inhibitors in the system. The order of the inhibitors is in agreement with the experiments with the following values for binding energies: -1.06, -0.17, and -2.33 eV for PASP, NTMP, and DETPMP, respectively. The results of this study indicated that the inhibition strength of the three inhibitors on barite scale formation can be sequenced as DETPMP > PASP > NTMP. Moreover, the ecological toxicity (eco-tox) properties were predicted, and the environmental impact of the different inhibitors was assessed. All inhibitors showed comparable eco-tox properties and predicted to be soluble in water. Molecular simulations proved to be an effective tool in the prediction of the performance and toxicity of barite scale inhibitors. |
راعي المشروع | Dr. Hussein and Mr. Onawole would like to acknowledge the support provided by NPRP grant no. 9-084-2-041 from the Qatar National Research Fund (a member of Qatar Foundation). The Gas Processing Center (GPC) and the Chemical Engineering Department at Qatar University are also acknowledged for their support for providing licenses for the simulators. The findings achieved herein are solely the responsibility of the authors. |
اللغة | en |
الناشر | American Chemical Society |
الموضوع | ensity-Functional Theory Barite Scale Phosphonate Carboxyl-Based |
النوع | Article |
الصفحات | 33323-33328 |
رقم العدد | 51 |
رقم المجلد | 5 |
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